Science — English

What is the main purpose of using a control in an experiment?
The main purpose of using a control in an experiment is to establish a baseline for comparison. Controls help isolate...
Added: 25 Mar 2000
Updated: 29 Nov 2025
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What scientific field studies the chemical processes in living organisms?
The scientific field that studies the chemical processes in living organisms is called biochemistry. This discipline investigates the chemical compounds...
Added: 25 Mar 2000
Updated: 03 Nov 2025
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What is the term that describes the initial state of a closed system before a reaction occurs?
The term that describes the initial state of a closed system before a reaction occurs is called the reactants. In...
Added: 25 Mar 2000
Updated: 08 Nov 2025
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What is the structure called that holds the DNA in eukaryotic cells?
The structure that holds the DNA in eukaryotic cells is called the nucleus. The nucleus is a membrane-bound organelle that...
Added: 25 Mar 2000
Updated: 10 Nov 2025
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What concept describes the speed of an object in relation to time?
The concept that describes the speed of an object in relation to time is velocity. Velocity is a vector quantity,...
Added: 25 Mar 2000
Updated: 16 Nov 2025
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What is the main function of the endocrine system in the body?
The main function of the endocrine system in the body is to regulate various physiological processes through the release of...
Added: 25 Mar 2000
Updated: 26 Nov 2025
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What type of energy transformation occurs in a solar panel?
The type of energy transformation that occurs in a solar panel is from solar energy to electrical energy. In solar...
Added: 25 Mar 2000
Updated: 14 Nov 2025
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What is the term for the scientific study of interactions amongst living organisms?
The term for the scientific study of interactions amongst living organisms is ecology. Ecology examines how organisms relate to one...
Added: 25 Mar 2000
Updated: 27 Nov 2025
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What is the term for a naturally occurring fracture in rocks that can lead to earthquakes?
The term for a naturally occurring fracture in rocks that can lead to earthquakes is a fault. Faults occur when...
Added: 25 Mar 2000
Updated: 22 Nov 2025
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What is the biological term for organisms that can survive without light?
The biological term for organisms that can survive without light is chemosynthetic organisms. These organisms can produce energy from inorganic...
Added: 25 Mar 2000
Updated: 01 Dec 2025
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What is the main type of energy released during nuclear fission?
The main type of energy released during nuclear fission is nuclear energy. In fission, heavy atomic nuclei split into smaller...
Added: 25 Mar 2000
Updated: 23 Nov 2025
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What is the chemical process called when organisms extract energy from glucose?
The chemical process called when organisms extract energy from glucose is known as cellular respiration. This metabolic process occurs in...
Added: 25 Mar 2000
Updated: 07 Nov 2025
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What term describes the way in which ecosystems recover after disturbance?
The term that describes the way in which ecosystems recover after disturbance is ecological succession. This process can be primary...
Added: 25 Mar 2000
Updated: 02 Nov 2025
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Which organ filters waste products from the blood?
The organ that filters waste products from the blood is the kidney. Kidneys play a crucial role in the excretory...
Added: 25 Mar 2000
Updated: 20 Nov 2025
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What effect does temperature have on the rate of chemical reactions?
Temperature significantly affects the rate of chemical reactions. As temperature increases, particles move more rapidly, leading to a higher frequency...
Added: 25 Mar 2000
Updated: 08 Nov 2025
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What are the two primary types of chemical bonds?
The two primary types of chemical bonds are ionic and covalent bonds. Ionic bonds form when electrons are transferred between...
Added: 25 Mar 2000
Updated: 27 Nov 2025
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What is the process called where organisms best adapted to their environment survive and reproduce?
The process where organisms best adapted to their environment survive and reproduce is called natural selection. This key mechanism of...
Added: 25 Mar 2000
Updated: 21 Nov 2025
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What is the process of a gas turning into a solid called?
The process of a gas turning into a solid is known as sublimation. During sublimation, molecules in a gaseous state...
Added: 25 Mar 2000
Updated: 15 Nov 2025
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Which property of water is responsible for its unique solvent abilities?
The property of water responsible for its unique solvent abilities is polarity. Water molecules have a positive and negative end...
Added: 25 Mar 2000
Updated: 21 Nov 2025
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What is the main organ in vertebrates responsible for the circulation of blood?
The main organ in vertebrates responsible for the circulation of blood is the heart. This muscular organ pumps blood throughout...
Added: 25 Mar 2000
Updated: 13 Nov 2025
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