Science — English

What structure regulates what enters and leaves a cell?
The structure that regulates what enters and leaves a cell is the plasma membrane. This flexible barrier is composed of...
Added: 27 Feb 2000
Updated: 18 Nov 2025
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What is the effect of increased pollutants on marine life?
The effect of increased pollutants on marine life can be detrimental, leading to ecosystem degradation and loss of biodiversity. Pollutants...
Added: 27 Feb 2000
Updated: 20 Nov 2025
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What is the primary role of the ribosome in protein synthesis?
The primary role of the ribosome in protein synthesis is to serve as the site where mRNA (messenger RNA) is...
Added: 27 Feb 2000
Updated: 29 Nov 2025
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What is the term for the pressure exerted by a gas in a closed container?
The term for the pressure exerted by a gas in a closed container is gas pressure. This pressure arises from...
Added: 27 Feb 2000
Updated: 30 Nov 2025
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What is the contribution of a keystone species to its ecosystem?
The contribution of a keystone species to its ecosystem is significant, as it plays a critical role in maintaining the...
Added: 27 Feb 2000
Updated: 30 Nov 2025
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What is the key component of a lipid that distinguishes it from carbohydrates?
The key component of a lipid that distinguishes it from carbohydrates is the presence of fatty acids and glycerol. Lipids,...
Added: 27 Feb 2000
Updated: 02 Nov 2025
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What subatomic particle provides mass to the atom?
The subatomic particle that provides mass to the atom is the neutron. Neutrons, along with protons, reside in the atomic...
Added: 27 Feb 2000
Updated: 28 Nov 2025
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What is the primary factor that influences the speed of sound?
The primary factor that influences the speed of sound is the medium through which it travels. Sound travels fastest in...
Added: 27 Feb 2000
Updated: 12 Nov 2025
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What is the role of biogeography in understanding species distribution?
The role of biogeography in understanding species distribution is to examine how geographic factors influence the location and abundance of...
Added: 27 Feb 2000
Updated: 20 Nov 2025
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What is the significance of critical periods in biological development?
The significance of critical periods in biological development lies in the notion that certain stages of growth are particularly sensitive...
Added: 27 Feb 2000
Updated: 27 Nov 2025
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What kind of biome is characterized by very low temperatures and permafrost?
A biome characterized by very low temperatures and permafrost is known as the tundra. This ecosystem features a unique combination...
Added: 27 Feb 2000
Updated: 16 Nov 2025
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What is the study of skeletal remains to understand human history called?
The study of skeletal remains to understand human history is called bioarchaeology. This discipline combines principles of anthropology and archaeology...
Added: 27 Feb 2000
Updated: 15 Nov 2025
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What is the term used for the apportioning of limited resources among competing organisms?
The term used for the apportioning of limited resources among competing organisms is resource allocation. In ecology, this concept describes...
Added: 27 Feb 2000
Updated: 22 Nov 2025
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What is the impact of methane as a greenhouse gas?
The impact of methane as a greenhouse gas is significant as it is much more effective at trapping heat in...
Added: 27 Feb 2000
Updated: 09 Nov 2025
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What is the primary structure and function of the plasma membrane?
The primary structure and function of the plasma membrane are to provide a selective barrier that regulates the entry and...
Added: 27 Feb 2000
Updated: 14 Nov 2025
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What is the role of the pituitary gland in the endocrine system?
The role of the pituitary gland in the endocrine system is to act as a master gland. It regulates and...
Added: 26 Feb 2000
Updated: 25 Nov 2025
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What is the scientific term for the journey of food through the digestive system?
The scientific term for the journey of food through the digestive system is peristalsis. Peristalsis involves a series of wave-like...
Added: 26 Feb 2000
Updated: 08 Nov 2025
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What type of rock forms from the cooling of molten material?
The type of rock that forms from the cooling of molten material is called igneous rock. This process occurs when...
Added: 26 Feb 2000
Updated: 22 Nov 2025
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What is the term for the phenomenon where two species evolve adaptations in response to one another?
The term for the phenomenon where two species evolve adaptations in response to one another is called coevolution. In coevolution,...
Added: 26 Feb 2000
Updated: 26 Nov 2025
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What is the ultimate source of energy for nearly all ecosystems on Earth?
The ultimate source of energy for nearly all ecosystems on Earth is solar energy. Plants, through the process of photosynthesis,...
Added: 26 Feb 2000
Updated: 30 Nov 2025
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