Science — English

What is the force that pulls objects toward each other due to their mass?
The force that pulls objects toward each other due to their mass is called gravity. It is a fundamental force...
Added: 22 Mar 2000
Updated: 14 Nov 2025
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What is the main function of the mitochondria in cells?
The main function of the mitochondria in cells is to produce ATP (adenosine triphosphate), the energy currency of the cell....
Added: 22 Mar 2000
Updated: 23 Nov 2025
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Which type of machine uses a wheel and axle to multiply force?
A machine that uses a wheel and axle to multiply force is called a simple machine. This type of machine...
Added: 22 Mar 2000
Updated: 22 Nov 2025
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What term describes the study of fungi?
The term that describes the study of fungi is mycology. This branch of biology focuses on the identification, classification, and...
Added: 22 Mar 2000
Updated: 15 Nov 2025
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What is the primary substance that makes up cell membranes?
The primary substance that makes up cell membranes is phospholipids. These molecules form a bilayer due to their hydrophilic heads...
Added: 22 Mar 2000
Updated: 26 Nov 2025
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What is the name of the virus that causes AIDS?
The virus that causes AIDS is known as the HIV virus (Human Immunodeficiency Virus). HIV attacks the body’s immune system,...
Added: 22 Mar 2000
Updated: 20 Nov 2025
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What is the name of the process that describes how living organisms adapt to their environment over time?
The process that describes how living organisms adapt to their environment over time is called evolution. This gradual change occurs...
Added: 22 Mar 2000
Updated: 22 Nov 2025
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Which part of the human eye is responsible for color vision?
The part of the human eye responsible for color vision is the retina. Within the retina, specialized cells called cones...
Added: 22 Mar 2000
Updated: 07 Nov 2025
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What is the scientific term for a measure of the disorder or randomness in a system?
The scientific term for a measure of the disorder or randomness in a system is entropy. In thermodynamics, entropy quantifies...
Added: 22 Mar 2000
Updated: 16 Nov 2025
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Which planet is known for its distinctive rings?
The planet known for its distinctive rings is Saturn. These rings are composed of ice particles, rocky debris, and dust...
Added: 22 Mar 2000
Updated: 30 Nov 2025
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What is the primary function of red blood cells in the body?
The primary function of red blood cells in the body is to transport oxygen from the lungs to tissues and...
Added: 22 Mar 2000
Updated: 29 Nov 2025
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Which gas is a byproduct of photosynthesis?
The gas that is a byproduct of photosynthesis is oxygen. During photosynthesis, plants, algae, and some bacteria convert carbon dioxide...
Added: 22 Mar 2000
Updated: 19 Nov 2025
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What is the branch of science that studies matter and its interactions?
The branch of science that studies matter and its interactions is known as chemistry. Chemistry encompasses the composition, structure, properties,...
Added: 22 Mar 2000
Updated: 29 Nov 2025
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In chemistry, what is the pH of a neutral solution at 25°C?
In chemistry, the pH of a neutral solution at 25°C is 7. At this pH, the concentration of hydrogen ions...
Added: 22 Mar 2000
Updated: 29 Nov 2025
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Which scientist is known for developing the theory of evolution by natural selection?
The scientist known for developing the theory of evolution by natural selection is Charles Darwin. His groundbreaking work, particularly in...
Added: 22 Mar 2000
Updated: 05 Nov 2025
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What is the name of the theory that describes the origin of the universe?
The theory that describes the origin of the universe is known as the Big Bang Theory. This scientific model suggests...
Added: 22 Mar 2000
Updated: 01 Dec 2025
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What organelle is responsible for producing ATP in eukaryotic cells?
The organelle responsible for producing ATP in eukaryotic cells is the mitochondria. These organelles play a critical role in energy...
Added: 22 Mar 2000
Updated: 26 Nov 2025
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What is the term for a substance's ability to dissolve in water?
The term for a substance's ability to dissolve in water is solubility. Solubility is influenced by various factors including temperature,...
Added: 22 Mar 2000
Updated: 10 Nov 2025
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What is the study of living organisms and their interactions with the environment called?
The study of living organisms and their interactions with the environment is called ecology. This branch of biology examines the...
Added: 22 Mar 2000
Updated: 09 Nov 2025
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In what part of the cell does cellular respiration primarily occur?
Cellular respiration primarily occurs in the mitochondria of the cell. This organelle is often referred to as the "powerhouse" because...
Added: 22 Mar 2000
Updated: 06 Nov 2025
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