Science — English

What is the term for a scientifically accepted explanation for a phenomenon?
A scientifically accepted explanation for a phenomenon is known as a theory. Theories are developed through extensive research and must...
Added: 17 Jan 2000
Updated: 14 Nov 2025
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What is the role of chloroplasts in plant cells?
The role of chloroplasts in plant cells is to conduct photosynthesis, the process by which plants convert light energy into...
Added: 17 Jan 2000
Updated: 12 Nov 2025
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What does the term "extinction" refer to in an ecological context?
The term "extinction" refers to the complete loss of a species from the planet. When a species becomes extinct, it...
Added: 17 Jan 2000
Updated: 23 Nov 2025
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What two components make up the majority of Earth's crust?
The two components that make up the majority of Earth's crust are oxygen and silicon. Together, they form the most...
Added: 17 Jan 2000
Updated: 16 Nov 2025
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What is an enzyme's active site?
An enzyme's active site is the specific region where substrate molecules bind and undergo a chemical reaction. This site is...
Added: 17 Jan 2000
Updated: 01 Nov 2025
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What is the study of the interactions of organisms with their environment?
The study of the interactions of organisms with their environment is called ecology. This scientific discipline examines how organisms relate...
Added: 17 Jan 2000
Updated: 12 Nov 2025
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What do we call the reaction that absorbs energy from its surroundings?
The reaction that absorbs energy from its surroundings is known as an endothermic reaction. In such reactions, the total enthalpy...
Added: 17 Jan 2000
Updated: 07 Nov 2025
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What is the main hormone responsible for regulating blood sugar levels?
The main hormone responsible for regulating blood sugar levels is insulin. Produced by the pancreas, insulin plays a crucial role...
Added: 17 Jan 2000
Updated: 15 Nov 2025
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What is the difference between qualitative and quantitative data?
The difference between qualitative and quantitative data lies primarily in their nature and types of information they convey. Qualitative data...
Added: 17 Jan 2000
Updated: 18 Nov 2025
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What is the process of breaking down glucose for energy?
The process of breaking down glucose for energy is known as cellular respiration. During this metabolic pathway, glucose is oxidized...
Added: 17 Jan 2000
Updated: 28 Nov 2025
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What is the primary basis for most biological classification?
The primary basis for most biological classification is the taxonomy, which organizes organisms into hierarchical categories based on shared characteristics....
Added: 17 Jan 2000
Updated: 15 Nov 2025
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What is the role of ribonucleic acid (RNA) in cells?
The role of ribonucleic acid (RNA) in cells includes serving as a crucial messenger and facilitator in the expression of...
Added: 17 Jan 2000
Updated: 05 Nov 2025
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What is the difference between renewable and non-renewable energy sources?
Renewable energy sources are those that can be naturally replenished, such as solar, wind, hydropower, and biomass. These energy sources...
Added: 17 Jan 2000
Updated: 01 Dec 2025
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What is the function of the digestive system?
The function of the digestive system is to break down food and absorb nutrients essential for the body's energy, growth,...
Added: 17 Jan 2000
Updated: 24 Nov 2025
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What scientific instrument measures atmospheric pressure?
The scientific instrument that measures atmospheric pressure is called a barometer. Barometers can be categorized mainly into two types: mercury...
Added: 17 Jan 2000
Updated: 23 Nov 2025
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What is the term for the average speed of molecules in a substance?
The term for the average speed of molecules in a substance is known as temperature. This quantity reflects the kinetic...
Added: 16 Jan 2000
Updated: 12 Nov 2025
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What is a virus?
A virus is a microscopic agent that requires a host cell to replicate and reproduce. Composed of genetic material (either...
Added: 16 Jan 2000
Updated: 06 Nov 2025
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What is the primary role of the skeletal system?
The primary role of the ...
Added: 16 Jan 2000
Updated: 05 Nov 2025
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What is the term for an organism that feeds on dead organic matter?
An organism that feeds on dead organic matter is called a saporific or saprophyte. These organisms, including certain fungi and...
Added: 16 Jan 2000
Updated: 06 Nov 2025
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What is the principle behind the greenhouse effect?
The principle behind the greenhouse effect involves the trapping of heat in a planet's atmosphere. Solar radiation passes through the...
Added: 16 Jan 2000
Updated: 02 Nov 2025
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