Biology, chemistry, physics, and earth science content tested on the Praxis General Science: Content Knowledge exam. Front: the term or concept. Back: a plain-language definition.
39 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a eukaryotic cell?
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A cell with a membrane-bound nucleus and other membrane-bound organelles.- What is photosynthesis?
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A process in which plants use light energy to convert carbon dioxide and water into glucose and oxygen.- What is cellular respiration?
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A process in which cells break down glucose to release energy in the form of ATP.- Define mitochondria.
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An organelle in eukaryotic cells that produces ATP through cellular respiration, often called the powerhouse of the cell.- What is DNA?
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A molecule that stores genetic information in the form of instructions for building and maintaining living organisms.- What is natural selection?
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The process by which traits that increase survival and reproduction become more common in a population over time.- Define photosynthetic organisms.
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Living things that can convert light energy into chemical energy, such as plants and certain bacteria.- What is an ecosystem?
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A community of organisms and their physical environment, including all the living and nonliving things in an area.- What is homeostasis?
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The process by which an organism maintains stable internal conditions despite external changes.- Define enzyme.
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A protein that speeds up a chemical reaction in cells without being consumed in the reaction.- What is an atom?
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The smallest unit of matter that retains the properties of an element, composed of protons, neutrons, and electrons.- What is the periodic table?
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A systematic arrangement of all known elements organized by atomic number and chemical properties.- Define oxidation.
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A chemical process in which a substance loses electrons, often to oxygen, or increases in oxidation state.- What is a covalent bond?
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A chemical bond formed when two atoms share one or more pairs of electrons.- Define ionic bond.
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A chemical bond formed when an electron is transferred from one atom to another, creating oppositely charged ions.
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