Exam (elaborations)

Biology Exam Study Guide 2025

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Course
A level Biology

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A Level Biology

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Uploaded on January 13, 2025
Number of pages 9
Written in 2024/2025
Type Exam (elaborations)
Contains Questions & answers

biology exam study guide 2025

Institution
A level Biology
Education
A level Biology
Course
A level Biology

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Biology Exam Study Guide 2025
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Active Transport - ansthe movement of materials through a cell membrane using energy

Aerobic - ansChemical reactions that require the presence of oxygen. More ATP

Amino Acids - ansSimple forms of protein normally used to build tissues or, under some conditions, burned for
energy

Anaerobic - ansprocess that does not require oxygen. Makes less ATP

Atomic Mass - anstotal mass of the protons and neutrons in an atom, measured in atomic mass units

Atomic Number - ansthe number of protons in the nucleus of an atom

ATP - ansadenosine triphosphate, an organic molecule that acts as the main energy source for cell processes;
composed of a nitrogenous base, a sugar, and three phosphate groups

Autotrophs - ansorganisms that use energy from sunlight or from chemical bonds in inorganic substances to
make organic compounds

Biosphere - ansAll parts of the planet with living things

Calvin Cycle - ansreactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy
compounds such as sugars

Cancer - ansany malignant growth or tumor caused by abnormal and uncontrolled cell division

, Carbohydrates - ansmain source of energy for the body

Catalyst - anssubstance that speeds up the rate of a chemical reaction

Cell - ansBasic unit of life

Cell Cycle - ansseries of events that cells go through as they grow and divide

Cell Specialization - ansthe process in which cells develop in different ways to perform different tasks

Cell Theory - ansThe theory that cells form the fundamental structural and functional units of all living
organisms

Cell Wall - ansa thin membrane around the cytoplasm of a cell

Cellular Respiration - ansthe metabolic processes whereby certain organisms obtain energy from organic
molecules

Centromere - ansa specialized condensed region of each chromosome that appears during mitosis where the
chromatids are held together to form an X shape

Chemical Reactions - ansbreaking of old and formation of new chemical bonds that result in new substances

Chlorophyll - ansany of a group of green pigments found in photosynthetic organisms

Chloroplast - ansplastid containing chlorophyll and other pigments

Chromosomes - ansthreadlike structures made of DNA molecules that contain the genes.

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