Science — English

Which molecular structure is essential for DNA replication?
The essential molecular structure for DNA replication is the double helix. This structure consists of two strands that twist around...
Added: 25 Mar 2000
Updated: 02 Nov 2025
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What is the smallest particle of an element that retains its properties?
The smallest particle of an element that retains its properties is an atom. Each atom consists of a nucleus, containing...
Added: 25 Mar 2000
Updated: 02 Nov 2025
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What is the main purpose of DNA in living organisms?
The main purpose of DNA in living organisms is to store and transmit genetic information. DNA carries the instructions necessary...
Added: 25 Mar 2000
Updated: 14 Nov 2025
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What gas is produced as a waste product during photosynthesis?
The gas produced as a waste product during photosynthesis is oxygen. During this process, plants convert carbon dioxide and water...
Added: 25 Mar 2000
Updated: 04 Nov 2025
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Which scientist developed the law of universal gravitation?
The scientist who developed the law of universal gravitation is Isaac Newton. In the late 17th century, he formulated the...
Added: 25 Mar 2000
Updated: 18 Nov 2025
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What is the name given to the process by which water vapor turns into liquid?
The name given to the process by which water vapor turns into liquid is condensation. This process occurs when air...
Added: 25 Mar 2000
Updated: 21 Nov 2025
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What is the name of the chemical reaction that occurs when a substance combines with oxygen?
The name of the chemical reaction that occurs when a substance combines with oxygen is oxidation. This reaction typically involves...
Added: 25 Mar 2000
Updated: 16 Nov 2025
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Which type of lens is thicker in the middle than at the edges?
The type of lens that is thicker in the middle than at the edges is called a convex lens. Convex...
Added: 25 Mar 2000
Updated: 19 Nov 2025
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What is the common term for the force that attracts objects toward the Earth?
The common term for the force that attracts objects toward the Earth is gravity. Gravity is a fundamental force that...
Added: 25 Mar 2000
Updated: 14 Nov 2025
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What theory explains the origin of the universe?
The theory that explains the origin of the universe is known as the Big Bang Theory. It posits that the...
Added: 25 Mar 2000
Updated: 19 Nov 2025
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What process do cells undergo to produce energy in the absence of oxygen?
The process that cells undergo to produce energy in the absence of oxygen is called fermentation. This metabolic pathway allows...
Added: 25 Mar 2000
Updated: 07 Nov 2025
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What branch of science studies motion and forces?
The branch of science that studies motion and forces is called physics. Within physics, mechanics specifically focuses on these aspects,...
Added: 25 Mar 2000
Updated: 11 Nov 2025
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What is the hardest natural substance found on Earth?
The hardest natural substance found on Earth is diamond. Composed of carbon atoms arranged in a crystal lattice structure, diamonds...
Added: 25 Mar 2000
Updated: 10 Nov 2025
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What type of animal is known for its ability to regenerate lost body parts?
A type of animal known for its ability to regenerate lost body parts is the axolotl. This amphibian can regrow...
Added: 25 Mar 2000
Updated: 09 Nov 2025
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What is the process of plants losing water vapor through leaves called?
The process of plants losing water vapor through their leaves is called transpiration. This process is essential for maintaining water...
Added: 25 Mar 2000
Updated: 30 Nov 2025
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Which particle is considered the "carrier" of electromagnetic force?
The particle considered the "carrier" of the electromagnetic force is the photon. Photons are massless particles that carry electromagnetic energy...
Added: 25 Mar 2000
Updated: 02 Nov 2025
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What components make up the Earth's biosphere?
The components that make up the Earth's biosphere include the land (terrestrial ecosystems), water (aquatic ecosystems), and the atmosphere. The...
Added: 25 Mar 2000
Updated: 22 Nov 2025
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What is the term for energy possessed due to an object's motion?
The term for energy possessed due to an object's motion is kinetic energy. This energy varies directly with the mass...
Added: 25 Mar 2000
Updated: 29 Nov 2025
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What type of plant is characterized as lacking true roots, stems, and leaves?
A type of plant characterized as lacking true roots, stems, and leaves is known as a bryophyte, which includes mosses,...
Added: 25 Mar 2000
Updated: 02 Nov 2025
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What is the scientific term for a species that has a risk of extinction?
The scientific term for a species that has a risk of extinction is endangered. These species are often classified based...
Added: 25 Mar 2000
Updated: 15 Nov 2025
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