Akademi YKS

Okuma Anlama Soruları (Sayfa 2)

YDT Okuma Anlama dersi, Okuma Anlama konusundan 71 özgün örnek soru. Önce kendin çöz, sonra “Cevabı göster” ile kontrol et; adım adım çözüm her sorunun kendi sayfasında.

Okuma AnlamaSoru #9342 Soru sayfası
Sleep and Memory Consolidation
For decades, neuroscientists viewed sleep simply as a necessary downtime for physiological recuperation. However, contemporary brain imaging research has revealed that the sleeping brain is engaged in an intensely active and meticulously organized sequence of cognitive maintenance. During slow-wave non-REM sleep, newly formed neural memories initially stored in the fragile and capacity-limited hippocampus are systematically reactivated and transferred to the vast, durable architecture of the neocortex. This intricate biological relay prevents catastrophic memory interference, allowing new experiences to integrate smoothly into established knowledge networks. Furthermore, during rapid-eye-movement (REM) sleep, emotional valences associated with traumatic or distressing memories are effectively dampened through neurochemical shifts, particularly the temporary cessation of noradrenaline. Consequently, sleep deprivation does not merely induce daytime fatigue; it fundamentally compromises memory retention, emotional equilibrium, and cognitive plasticity.
According to the passage, the primary function of slow-wave sleep regarding memory is ----.
  1. A)to erase all short-term memories from the hippocampus to prepare for new data
  2. B)to transfer recently acquired memories from the hippocampus to the neocortex
  3. C)to stimulate the production of noradrenaline throughout the prefrontal cortex
  4. D)to permanently block new experiences from integrating with past knowledge
  5. E)to induce physiological downtime and halt all cellular neural activity
Cevabı göster
Doğru cevap: B) to transfer recently acquired memories from the hippocampus to the neocortex
Okuma AnlamaSoru #9343 Soru sayfası
Sleep and Memory Consolidation
For decades, neuroscientists viewed sleep simply as a necessary downtime for physiological recuperation. However, contemporary brain imaging research has revealed that the sleeping brain is engaged in an intensely active and meticulously organized sequence of cognitive maintenance. During slow-wave non-REM sleep, newly formed neural memories initially stored in the fragile and capacity-limited hippocampus are systematically reactivated and transferred to the vast, durable architecture of the neocortex. This intricate biological relay prevents catastrophic memory interference, allowing new experiences to integrate smoothly into established knowledge networks. Furthermore, during rapid-eye-movement (REM) sleep, emotional valences associated with traumatic or distressing memories are effectively dampened through neurochemical shifts, particularly the temporary cessation of noradrenaline. Consequently, sleep deprivation does not merely induce daytime fatigue; it fundamentally compromises memory retention, emotional equilibrium, and cognitive plasticity.
It can be inferred from the passage that during REM sleep, ----.
  1. A)noradrenaline levels surge dramatically to stimulate vivid dream recall
  2. B)the emotional intensity of traumatic memories is mitigated due to neurochemical changes
  3. C)the neocortex shuts down entirely to allow hippocampal regeneration
  4. D)individuals lose their ability to regulate emotional responses upon waking
  5. E)long-term memory transfer ceases completely and permanently
Cevabı göster
Doğru cevap: B) the emotional intensity of traumatic memories is mitigated due to neurochemical changes
Okuma AnlamaSoru #9344 Soru sayfası
Sleep and Memory Consolidation
For decades, neuroscientists viewed sleep simply as a necessary downtime for physiological recuperation. However, contemporary brain imaging research has revealed that the sleeping brain is engaged in an intensely active and meticulously organized sequence of cognitive maintenance. During slow-wave non-REM sleep, newly formed neural memories initially stored in the fragile and capacity-limited hippocampus are systematically reactivated and transferred to the vast, durable architecture of the neocortex. This intricate biological relay prevents catastrophic memory interference, allowing new experiences to integrate smoothly into established knowledge networks. Furthermore, during rapid-eye-movement (REM) sleep, emotional valences associated with traumatic or distressing memories are effectively dampened through neurochemical shifts, particularly the temporary cessation of noradrenaline. Consequently, sleep deprivation does not merely induce daytime fatigue; it fundamentally compromises memory retention, emotional equilibrium, and cognitive plasticity.
The word "dampened" in the passage is closest in meaning to ----.
  1. A)demolished / ruined
  2. B)amplified / increased
  3. C)fabricated / invented
  4. D)lessened / softened
  5. E)postponed / delayed
Cevabı göster
Doğru cevap: D) lessened / softened
Okuma AnlamaSoru #9345 Soru sayfası
Sleep and Memory Consolidation
For decades, neuroscientists viewed sleep simply as a necessary downtime for physiological recuperation. However, contemporary brain imaging research has revealed that the sleeping brain is engaged in an intensely active and meticulously organized sequence of cognitive maintenance. During slow-wave non-REM sleep, newly formed neural memories initially stored in the fragile and capacity-limited hippocampus are systematically reactivated and transferred to the vast, durable architecture of the neocortex. This intricate biological relay prevents catastrophic memory interference, allowing new experiences to integrate smoothly into established knowledge networks. Furthermore, during rapid-eye-movement (REM) sleep, emotional valences associated with traumatic or distressing memories are effectively dampened through neurochemical shifts, particularly the temporary cessation of noradrenaline. Consequently, sleep deprivation does not merely induce daytime fatigue; it fundamentally compromises memory retention, emotional equilibrium, and cognitive plasticity.
Which of the following would be the most suitable title for this passage?
  1. A)The Architecture of Sleep: How the Brain Consolidates Memories and Emotions
  2. B)Treating Chronic Insomnia Through Pharmaceutical Interventions
  3. C)The Evolutionary Advantages of Dreaming and Nightmare Prevention
  4. D)Why Adults Require Less Sleep Than Growing Adolescents
  5. E)The Dangers of Noradrenaline Overproduction in Modern Society
Cevabı göster
Doğru cevap: A) The Architecture of Sleep: How the Brain Consolidates Memories and Emotions
Okuma AnlamaSoru #9346 Soru sayfası
The Maya Civilization and Ecological Strain
During the Classic Period (250–900 CE), the Maya civilization achieved magnificent feats of monumental architecture, hieroglyphic writing, astronomical calendrics, and intensive agricultural engineering across Central America. Yet, between the eighth and ninth centuries, their bustling lowland city-states experienced a catastrophic societal collapse, characterized by dramatic demographic depopulation, the cessation of royal inscriptions, and the abandonment of towering urban centers. While popular folklore previously attributed this sudden downfall to warfare or alien intervention, modern paleo-climatological analyses have uncovered a far more complex ecological explanation. Sediment core samples extracted from Yucatan lakebeds demonstrate that the region suffered prolonged, severe multi-decadal mega-droughts. Crucially, Maya agricultural practices, which involved widespread deforestation to cultivate maize and clear land for limestone plaster production, exacerbated local aridification. By stripping the forest canopy, the Maya inadvertently reduced evapotranspiration and local cloud cover, turning a natural dry cycle into an unmitigated humanitarian catastrophe.
According to recent paleoclimatological studies discussed in the passage, the primary environmental trigger of the Maya collapse was ----.
  1. A)destructive volcanic eruptions that buried major urban centers under basalt lava
  2. B)extended multi-decadal mega-droughts that devastated regional water supplies
  3. C)unprecedented sea level rises that inundated agricultural valleys along the coast
  4. D)sudden drops in temperature that caused widespread crop frostbite
  5. E)a massive meteorite impact that triggered prolonged seismic disruptions
Cevabı göster
Doğru cevap: B) extended multi-decadal mega-droughts that devastated regional water supplies
Okuma AnlamaSoru #9347 Soru sayfası
The Maya Civilization and Ecological Strain
During the Classic Period (250–900 CE), the Maya civilization achieved magnificent feats of monumental architecture, hieroglyphic writing, astronomical calendrics, and intensive agricultural engineering across Central America. Yet, between the eighth and ninth centuries, their bustling lowland city-states experienced a catastrophic societal collapse, characterized by dramatic demographic depopulation, the cessation of royal inscriptions, and the abandonment of towering urban centers. While popular folklore previously attributed this sudden downfall to warfare or alien intervention, modern paleo-climatological analyses have uncovered a far more complex ecological explanation. Sediment core samples extracted from Yucatan lakebeds demonstrate that the region suffered prolonged, severe multi-decadal mega-droughts. Crucially, Maya agricultural practices, which involved widespread deforestation to cultivate maize and clear land for limestone plaster production, exacerbated local aridification. By stripping the forest canopy, the Maya inadvertently reduced evapotranspiration and local cloud cover, turning a natural dry cycle into an unmitigated humanitarian catastrophe.
How did the Maya themselves worsen the impact of the natural drought, according to the passage?
  1. A)By damming natural rivers and diverting all freshwater into neighboring territories
  2. B)Through widespread deforestation, which reduced evapotranspiration and localized rainfall
  3. C)By poisoning subterranean cenote water tables with toxic agricultural chemicals
  4. D)Through excessive reliance on imported grain rather than indigenous maize crops
  5. E)By deliberately setting fire to surrounding rain forests to expand urban defense walls
Cevabı göster
Doğru cevap: B) Through widespread deforestation, which reduced evapotranspiration and localized rainfall
Okuma AnlamaSoru #9348 Soru sayfası
The Maya Civilization and Ecological Strain
During the Classic Period (250–900 CE), the Maya civilization achieved magnificent feats of monumental architecture, hieroglyphic writing, astronomical calendrics, and intensive agricultural engineering across Central America. Yet, between the eighth and ninth centuries, their bustling lowland city-states experienced a catastrophic societal collapse, characterized by dramatic demographic depopulation, the cessation of royal inscriptions, and the abandonment of towering urban centers. While popular folklore previously attributed this sudden downfall to warfare or alien intervention, modern paleo-climatological analyses have uncovered a far more complex ecological explanation. Sediment core samples extracted from Yucatan lakebeds demonstrate that the region suffered prolonged, severe multi-decadal mega-droughts. Crucially, Maya agricultural practices, which involved widespread deforestation to cultivate maize and clear land for limestone plaster production, exacerbated local aridification. By stripping the forest canopy, the Maya inadvertently reduced evapotranspiration and local cloud cover, turning a natural dry cycle into an unmitigated humanitarian catastrophe.
The word "inadvertently" in the passage means ----.
  1. A)reluctantly / unwillingly
  2. B)deliberately / intentionally
  3. C)frequently / repeatedly
  4. D)unintentionally / accidentally
  5. E)efficiently / productively
Cevabı göster
Doğru cevap: D) unintentionally / accidentally
Okuma AnlamaSoru #9349 Soru sayfası
The Maya Civilization and Ecological Strain
During the Classic Period (250–900 CE), the Maya civilization achieved magnificent feats of monumental architecture, hieroglyphic writing, astronomical calendrics, and intensive agricultural engineering across Central America. Yet, between the eighth and ninth centuries, their bustling lowland city-states experienced a catastrophic societal collapse, characterized by dramatic demographic depopulation, the cessation of royal inscriptions, and the abandonment of towering urban centers. While popular folklore previously attributed this sudden downfall to warfare or alien intervention, modern paleo-climatological analyses have uncovered a far more complex ecological explanation. Sediment core samples extracted from Yucatan lakebeds demonstrate that the region suffered prolonged, severe multi-decadal mega-droughts. Crucially, Maya agricultural practices, which involved widespread deforestation to cultivate maize and clear land for limestone plaster production, exacerbated local aridification. By stripping the forest canopy, the Maya inadvertently reduced evapotranspiration and local cloud cover, turning a natural dry cycle into an unmitigated humanitarian catastrophe.
The main point of the passage is that ----.
  1. A)the Classic Maya economy collapsed primarily because of violent foreign military invasions
  2. B)pre-Columbian Mesoamerican societies were completely immune to natural ecological fluctuations
  3. C)the collapse of the Maya civilization resulted from an interplay of natural climate change and human environmental degradation
  4. D)limestone plaster production was the single cause of societal collapse across ancient America
  5. E)modern paleoclimatology has disproved that climate shifts ever affect human civilizations
Cevabı göster
Doğru cevap: C) the collapse of the Maya civilization resulted from an interplay of natural climate change and human environmental degradation
Okuma AnlamaSoru #9350 Soru sayfası
Synthetic Biology and Engineered Enzymes
Synthetic biology represents a revolutionary paradigm shift from merely observing biological systems to actively designing and programming them from the ground up. By utilizing artificial intelligence tools such as AlphaFold to predict three-dimensional protein structures with atomic accuracy, bioengineers can now design de novo enzymes that have no evolutionary precedents in nature. One of the most promising applications of these custom catalysts is the rapid breakdown of persistent synthetic pollutants, particularly polyethylene terephthalate (PET) plastics, into non-toxic organic monomers within hours rather than centuries. Additionally, engineered microbial strains are being programmed to synthesize critical pharmaceutical compounds, bio-jet fuels, and nitrogen-fixing agricultural fertilizers directly from atmospheric carbon dioxide. However, this immense technological capability raises profound biosecurity and ethical questions regarding accidental ecological release and the synthetic creation of novel pathogens.
According to the passage, the primary advantage of combining AI with synthetic biology is that it allows researchers to ----.
  1. A)produce fossil petroleum fuels at significantly lower manufacturing expenses
  2. B)eliminate the need for physical laboratory experiments and clinical trials
  3. C)completely ban the commercial production of synthetic plastic materials
  4. D)prevent all future bacterial and viral mutations across agricultural crops
  5. E)design entirely new enzymes with precise functions that do not naturally exist
Cevabı göster
Doğru cevap: E) design entirely new enzymes with precise functions that do not naturally exist
Okuma AnlamaSoru #9351 Soru sayfası
Synthetic Biology and Engineered Enzymes
Synthetic biology represents a revolutionary paradigm shift from merely observing biological systems to actively designing and programming them from the ground up. By utilizing artificial intelligence tools such as AlphaFold to predict three-dimensional protein structures with atomic accuracy, bioengineers can now design de novo enzymes that have no evolutionary precedents in nature. One of the most promising applications of these custom catalysts is the rapid breakdown of persistent synthetic pollutants, particularly polyethylene terephthalate (PET) plastics, into non-toxic organic monomers within hours rather than centuries. Additionally, engineered microbial strains are being programmed to synthesize critical pharmaceutical compounds, bio-jet fuels, and nitrogen-fixing agricultural fertilizers directly from atmospheric carbon dioxide. However, this immense technological capability raises profound biosecurity and ethical questions regarding accidental ecological release and the synthetic creation of novel pathogens.
How can custom engineered enzymes help solve environmental pollution, as stated in the text?
  1. A)By turning carbon dioxide directly into heavy radioactive metals
  2. B)By decomposing durable PET plastics into harmless organic units within hours
  3. C)By absorbing industrial smog and converting it into potable drinking water
  4. D)By permanently freezing plastic waste in sub-zero polar storage vaults
  5. E)By replacing conventional plastics with toxic biological petroleum resins
Cevabı göster
Doğru cevap: B) By decomposing durable PET plastics into harmless organic units within hours
Okuma AnlamaSoru #9352 Soru sayfası
Synthetic Biology and Engineered Enzymes
Synthetic biology represents a revolutionary paradigm shift from merely observing biological systems to actively designing and programming them from the ground up. By utilizing artificial intelligence tools such as AlphaFold to predict three-dimensional protein structures with atomic accuracy, bioengineers can now design de novo enzymes that have no evolutionary precedents in nature. One of the most promising applications of these custom catalysts is the rapid breakdown of persistent synthetic pollutants, particularly polyethylene terephthalate (PET) plastics, into non-toxic organic monomers within hours rather than centuries. Additionally, engineered microbial strains are being programmed to synthesize critical pharmaceutical compounds, bio-jet fuels, and nitrogen-fixing agricultural fertilizers directly from atmospheric carbon dioxide. However, this immense technological capability raises profound biosecurity and ethical questions regarding accidental ecological release and the synthetic creation of novel pathogens.
The author cautions that synthetic biology ----.
  1. A)has completely failed to deliver any tangible medical or environmental benefits
  2. B)brings serious ethical and biosecurity hazards, such as the potential creation of novel pathogens
  3. C)is too computationally expensive to be adopted by university researchers
  4. D)will soon be rendered obsolete by quantum nanotechnology developments
  5. E)cannot function without relying heavily on fossil fuel sub-products
Cevabı göster
Doğru cevap: B) brings serious ethical and biosecurity hazards, such as the potential creation of novel pathogens
Okuma AnlamaSoru #9353 Soru sayfası
Synthetic Biology and Engineered Enzymes
Synthetic biology represents a revolutionary paradigm shift from merely observing biological systems to actively designing and programming them from the ground up. By utilizing artificial intelligence tools such as AlphaFold to predict three-dimensional protein structures with atomic accuracy, bioengineers can now design de novo enzymes that have no evolutionary precedents in nature. One of the most promising applications of these custom catalysts is the rapid breakdown of persistent synthetic pollutants, particularly polyethylene terephthalate (PET) plastics, into non-toxic organic monomers within hours rather than centuries. Additionally, engineered microbial strains are being programmed to synthesize critical pharmaceutical compounds, bio-jet fuels, and nitrogen-fixing agricultural fertilizers directly from atmospheric carbon dioxide. However, this immense technological capability raises profound biosecurity and ethical questions regarding accidental ecological release and the synthetic creation of novel pathogens.
The word "precedents" in the passage refers to ----.
  1. A)earlier examples or counterparts
  2. B)financial profits or earnings
  3. C)dangerous toxins or poisons
  4. D)governmental regulations or laws
  5. E)chemical solvents or catalysts
Cevabı göster
Doğru cevap: A) earlier examples or counterparts
Okuma AnlamaSoru #9354 Soru sayfası
Urban Soundscapes and Human Well-Being
For centuries, urban architectural design has focused overwhelmingly on visual aesthetics: majestic facades, symmetry, and skyline silhouettes. Acoustic environments, by contrast, were largely dismissed as unavoidable secondary byproducts of metropolitan commerce and transportation. However, modern psychoacoustic research demonstrates that chronic exposure to urban noise pollution—ranging from rumbling combustion engines to screeching train tracks—triggers continuous physiological stress responses, notably elevated cortisol and chronic hypertension. Recognizing this, progressive city planners are shifting toward holistic "soundscape design." Rather than merely installing ugly acoustic barriers that deflect sound upward into high-rise apartments, architects are integrating sound-absorbing porous stone facades, vegetated vertical gardens, and public water fountains that generate soothing white noise. By masking intrusive traffic din with melodic natural acoustics, modern soundscape architecture demonstrably restores psychological tranquility and fosters healthier civic living.
According to the passage, traditional urban architecture was limited because it ----.
  1. A)actively encouraged excessive industrial noise generation in residential zones
  2. B)banned the installation of decorative public water fountains in town squares
  3. C)favored porous stone materials over structural steel and reinforced concrete
  4. D)prohibited high-rise residential buildings from being constructed near roadways
  5. E)primarily emphasized visual aesthetics while largely ignoring acoustic environments
Cevabı göster
Doğru cevap: E) primarily emphasized visual aesthetics while largely ignoring acoustic environments
Okuma AnlamaSoru #9355 Soru sayfası
Urban Soundscapes and Human Well-Being
For centuries, urban architectural design has focused overwhelmingly on visual aesthetics: majestic facades, symmetry, and skyline silhouettes. Acoustic environments, by contrast, were largely dismissed as unavoidable secondary byproducts of metropolitan commerce and transportation. However, modern psychoacoustic research demonstrates that chronic exposure to urban noise pollution—ranging from rumbling combustion engines to screeching train tracks—triggers continuous physiological stress responses, notably elevated cortisol and chronic hypertension. Recognizing this, progressive city planners are shifting toward holistic "soundscape design." Rather than merely installing ugly acoustic barriers that deflect sound upward into high-rise apartments, architects are integrating sound-absorbing porous stone facades, vegetated vertical gardens, and public water fountains that generate soothing white noise. By masking intrusive traffic din with melodic natural acoustics, modern soundscape architecture demonstrably restores psychological tranquility and fosters healthier civic living.
The passage states that prolonged exposure to traffic noise pollution can cause ----.
  1. A)spontaneous visual hallucinations among residents of top-floor apartments
  2. B)accelerated deterioration of exterior building stones and mortar joints
  3. C)physiological health issues such as chronic high blood pressure and raised cortisol
  4. D)an immediate permanent loss of olfactory and gustatory sensory functions
  5. E)a decrease in the city's municipal electrical energy consumption
Cevabı göster
Doğru cevap: C) physiological health issues such as chronic high blood pressure and raised cortisol
Okuma AnlamaSoru #9356 Soru sayfası
Urban Soundscapes and Human Well-Being
For centuries, urban architectural design has focused overwhelmingly on visual aesthetics: majestic facades, symmetry, and skyline silhouettes. Acoustic environments, by contrast, were largely dismissed as unavoidable secondary byproducts of metropolitan commerce and transportation. However, modern psychoacoustic research demonstrates that chronic exposure to urban noise pollution—ranging from rumbling combustion engines to screeching train tracks—triggers continuous physiological stress responses, notably elevated cortisol and chronic hypertension. Recognizing this, progressive city planners are shifting toward holistic "soundscape design." Rather than merely installing ugly acoustic barriers that deflect sound upward into high-rise apartments, architects are integrating sound-absorbing porous stone facades, vegetated vertical gardens, and public water fountains that generate soothing white noise. By masking intrusive traffic din with melodic natural acoustics, modern soundscape architecture demonstrably restores psychological tranquility and fosters healthier civic living.
Which technique is mentioned as a method of soundscape design to reduce traffic noise impact?
  1. A)Painting building exteriors with bright reflective thermal coatings
  2. B)Constructing underground residential complexes devoid of all windows
  3. C)Restricting high-speed trains from traveling within twenty miles of city limits
  4. D)Replacing all glass windows with solid lead soundproofing plates
  5. E)Using water fountains that produce natural white noise to mask disturbing sounds
Cevabı göster
Doğru cevap: E) Using water fountains that produce natural white noise to mask disturbing sounds
Okuma AnlamaSoru #9357 Soru sayfası
Urban Soundscapes and Human Well-Being
For centuries, urban architectural design has focused overwhelmingly on visual aesthetics: majestic facades, symmetry, and skyline silhouettes. Acoustic environments, by contrast, were largely dismissed as unavoidable secondary byproducts of metropolitan commerce and transportation. However, modern psychoacoustic research demonstrates that chronic exposure to urban noise pollution—ranging from rumbling combustion engines to screeching train tracks—triggers continuous physiological stress responses, notably elevated cortisol and chronic hypertension. Recognizing this, progressive city planners are shifting toward holistic "soundscape design." Rather than merely installing ugly acoustic barriers that deflect sound upward into high-rise apartments, architects are integrating sound-absorbing porous stone facades, vegetated vertical gardens, and public water fountains that generate soothing white noise. By masking intrusive traffic din with melodic natural acoustics, modern soundscape architecture demonstrably restores psychological tranquility and fosters healthier civic living.
The word "intrusive" in the passage is closest in meaning to ----.
  1. A)invasive / disturbing
  2. B)delightful / pleasing
  3. C)transparent / visible
  4. D)inexpensive / affordable
  5. E)fragile / breakable
Cevabı göster
Doğru cevap: A) invasive / disturbing
Okuma AnlamaSoru #9358 Soru sayfası
Deep-Sea Hydrothermal Vents and the Origins of Life
Until the late 1970s, marine biologists operated under the foundational assumption that all life on Earth fundamentally depended on photosynthetic energy derived from solar radiation. That paradigm shattered in 1977 when the deep-sea research submersible Alvin discovered hydrothermal vents along the Galápagos Rift, two and a half kilometers beneath the ocean surface. Here, superheated water reaching temperatures above 400°C spews from mineral chimneys known as "black smokers," rich in hydrogen sulfide and dissolved metals. In this perpetual abyss of utter darkness and crushing pressure, scientists discovered flourishing ecosystems teeming with giant tube worms, blind shrimp, and pale crabs. Instead of photosynthesis, the foundation of this thriving food web is chemosynthesis, driven by extremophile bacteria that oxidize toxic hydrogen sulfide to produce organic carbon. Many astrobiologists now hypothesize that life on Earth may have originated around such alkaline vents, and that analogous chemosynthetic ecosystems might exist today in the subsurface ice-covered oceans of Europa and Enceladus.
Before the discovery of hydrothermal vents in 1977, biologists believed that ----.
  1. A)extraterrestrial life was flourishing beneath the ice crust of Jupiter's moon Europa
  2. B)giant tube worms and blind shrimp populated every oceanic ocean floor
  3. C)chemosynthetic bacteria were the most abundant organisms in surface waters
  4. D)liquid water could never exist at temperatures exceeding one hundred degrees Celsius
  5. E)photosynthesis driven by sunlight was the indispensable foundation of all life on Earth
Cevabı göster
Doğru cevap: E) photosynthesis driven by sunlight was the indispensable foundation of all life on Earth
Okuma AnlamaSoru #9359 Soru sayfası
Deep-Sea Hydrothermal Vents and the Origins of Life
Until the late 1970s, marine biologists operated under the foundational assumption that all life on Earth fundamentally depended on photosynthetic energy derived from solar radiation. That paradigm shattered in 1977 when the deep-sea research submersible Alvin discovered hydrothermal vents along the Galápagos Rift, two and a half kilometers beneath the ocean surface. Here, superheated water reaching temperatures above 400°C spews from mineral chimneys known as "black smokers," rich in hydrogen sulfide and dissolved metals. In this perpetual abyss of utter darkness and crushing pressure, scientists discovered flourishing ecosystems teeming with giant tube worms, blind shrimp, and pale crabs. Instead of photosynthesis, the foundation of this thriving food web is chemosynthesis, driven by extremophile bacteria that oxidize toxic hydrogen sulfide to produce organic carbon. Many astrobiologists now hypothesize that life on Earth may have originated around such alkaline vents, and that analogous chemosynthetic ecosystems might exist today in the subsurface ice-covered oceans of Europa and Enceladus.
What process fuels the primary biological production at hydrothermal vents?
  1. A)Anaerobic fermentation of dead organic debris drifting down from surface fisheries
  2. B)Photosynthesis performed by deep-sea kelp and symbiotic green algae
  3. C)Thermal absorption of geothermal radiation by giant predatory crabs
  4. D)Chemosynthesis carried out by bacteria that oxidize hydrogen sulfide
  5. E)Nuclear decay of radioactive basalt rocks beneath the oceanic lithosphere
Cevabı göster
Doğru cevap: D) Chemosynthesis carried out by bacteria that oxidize hydrogen sulfide
Okuma AnlamaSoru #9360 Soru sayfası
Deep-Sea Hydrothermal Vents and the Origins of Life
Until the late 1970s, marine biologists operated under the foundational assumption that all life on Earth fundamentally depended on photosynthetic energy derived from solar radiation. That paradigm shattered in 1977 when the deep-sea research submersible Alvin discovered hydrothermal vents along the Galápagos Rift, two and a half kilometers beneath the ocean surface. Here, superheated water reaching temperatures above 400°C spews from mineral chimneys known as "black smokers," rich in hydrogen sulfide and dissolved metals. In this perpetual abyss of utter darkness and crushing pressure, scientists discovered flourishing ecosystems teeming with giant tube worms, blind shrimp, and pale crabs. Instead of photosynthesis, the foundation of this thriving food web is chemosynthesis, driven by extremophile bacteria that oxidize toxic hydrogen sulfide to produce organic carbon. Many astrobiologists now hypothesize that life on Earth may have originated around such alkaline vents, and that analogous chemosynthetic ecosystems might exist today in the subsurface ice-covered oceans of Europa and Enceladus.
Why are astrobiologists particularly interested in deep-sea hydrothermal vents?
  1. A)Because water spewing from vents does not contain any chemical minerals or dissolved ions
  2. B)Because the mineral chimneys contain vast reserves of commercial gold and rare earth elements
  3. C)Because hydrothermal vents have proven that human colonies can survive on the ocean floor indefinitely
  4. D)Because the Alvin submersible can be converted into an interplanetary space vehicle
  5. E)Because identical chemosynthetic ecosystems might exist in the ice-covered oceans of icy moons like Europa and Enceladus
Cevabı göster
Doğru cevap: E) Because identical chemosynthetic ecosystems might exist in the ice-covered oceans of icy moons like Europa and Enceladus
Okuma AnlamaSoru #9361 Soru sayfası
Deep-Sea Hydrothermal Vents and the Origins of Life
Until the late 1970s, marine biologists operated under the foundational assumption that all life on Earth fundamentally depended on photosynthetic energy derived from solar radiation. That paradigm shattered in 1977 when the deep-sea research submersible Alvin discovered hydrothermal vents along the Galápagos Rift, two and a half kilometers beneath the ocean surface. Here, superheated water reaching temperatures above 400°C spews from mineral chimneys known as "black smokers," rich in hydrogen sulfide and dissolved metals. In this perpetual abyss of utter darkness and crushing pressure, scientists discovered flourishing ecosystems teeming with giant tube worms, blind shrimp, and pale crabs. Instead of photosynthesis, the foundation of this thriving food web is chemosynthesis, driven by extremophile bacteria that oxidize toxic hydrogen sulfide to produce organic carbon. Many astrobiologists now hypothesize that life on Earth may have originated around such alkaline vents, and that analogous chemosynthetic ecosystems might exist today in the subsurface ice-covered oceans of Europa and Enceladus.
The word "teeming with" in the passage means ----.
  1. A)abundantly filled with / swarming with
  2. B)completely devoid of / lacking in
  3. C)frightened of / intimidated by
  4. D)gradually poisoned by / dying of
  5. E)artificially separated from
Cevabı göster
Doğru cevap: A) abundantly filled with / swarming with

Okuma Anlama konusunda kendini dene

Üye ol; bu konudan süreli test oluştur, yanlışlarını otomatik tekrar listene ekle, konu bazında başarını takip et.

Ücretsiz Üye Ol

YDT Okuma Anlama - diğer konular

Akademi YKS Eğitim Portalı · Kocaali Bilişim tarafından geliştirilmektedir.