Photosynthesis is a vital process by which green plants, algae, and some bacteria convert light energy into chemical energy. Through this process, atmospheric carbon dioxide and water are transformed into glucose (a sugar) and oxygen. This glucose serves as the primary source of energy for the organism's growth and development. The oxygen released as a byproduct is crucial for the respiration of most living organisms, including humans. Thus, photosynthesis not only sustains the producers themselves but also forms the foundation of most of Earth's food chains and maintains the atmospheric oxygen levels.
Consider what the passage says the organism uses glucose for directly.
Show hint
Correct!
Wrong!
What is the primary role of glucose produced during photosynthesis, according to the passage?
The concept of 'neuroplasticity' refers to the brain's remarkable ability to reorganize itself by forming new neural connections throughout life. This adaptability allows the neurons (nerve cells) in the brain to compensate for injury and disease and to adjust their activities in response to new situations or changes in their environment. For example, learning a new skill, like playing a musical instrument or speaking a foreign language, can lead to significant changes in brain structure and function. This understanding has revolutionized our approach to rehabilitation after brain injury and has implications for education and lifelong learning.
Focus on the direct capabilities of neuroplasticity that are explicitly mentioned in the text.
Show hint
Correct!
Wrong!
According to the passage, neuroplasticity allows the brain to do which of the following?
Bees play a critical role as pollinators, contributing to the reproduction of many flowering plants, including a significant portion of the crops humans rely on for food. This process of pollination occurs when bees transfer pollen from the male anthers of a flower to the female stigma. However, bee populations worldwide have been declining due to factors such as habitat loss, pesticide use, climate change, and diseases. This decline poses a serious threat to biodiversity and food security, highlighting the urgent need for conservation efforts.
The passage links a specific problem directly to these significant threats.
Show hint
Correct!
Wrong!
What is the main threat to biodiversity and food security discussed in the passage?
The Industrial Revolution, which began in Great Britain in the late 18th century, was a period of major technological advancement that led to profound socioeconomic and cultural changes. Key innovations included the steam engine, the power loom, and the cotton gin, which mechanized production processes, particularly in the textile industry. This led to the factory system, mass production of goods, and a shift from agrarian economies to industrial ones. While it brought about economic growth and new opportunities, it also resulted in harsh working conditions for many, rapid urbanization leading to overcrowded cities, and significant environmental pollution.
Carefully read the list of outcomes and find the one not supported by the text.
Show hint
Correct!
Wrong!
The passage mentions all of the following as consequences of the Industrial Revolution EXCEPT:
The concept of 'urban heat islands' (UHIs) refers to the phenomenon where metropolitan areas are significantly warmer than their surrounding rural areas. This temperature difference is usually larger at night than during the day and is most apparent when winds are weak. UHIs are primarily caused by the modification of land surfaces, such as the use of dark materials for pavements and roofs which absorb and retain more solar radiation, and waste heat generated by energy usage. The UHI effect can have serious consequences, including increased energy consumption for cooling, elevated air pollution levels, and heat-related health problems for urban residents.
Focus on the part of the passage that describes when the temperature difference is most noticeable.
Show hint
Correct!
Wrong!
The passage states that the urban heat island effect is most apparent under which condition?
GRE Reading Comprehension Practice Quiz 4
Great Reader!
You have a keen eye for detail and understanding!
Good Effort!
You're getting the hang of it. Keep practicing!
Needs Review!
Focus on careful reading and identifying key information.
Share your Results:
