Exam (elaborations)

Biology Unit 3 2025

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Module
A level Biology

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A Level Biology

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Uploaded on January 13, 2025
Number of pages 7
Written in 2024/2025
Type Exam (elaborations)
Contains Questions & answers

biology unit 3 2025 aerobic ansusing oxygen whe

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Biology Unit 3 2025
aerobic - ansusing oxygen; when applied to organisms, cells, or tissues, it means they use oxygen as part of the
process of obtaining energy from glucose

anaerobic - ansnot using oxygen; when applied to organisms, cells, or tissues, it means they do not use oxygen
as part of the process of obtaining energy from glucose

aqueous - answatery

Archaea - ansone of the three domains of life, made up of prokaryotic organisms, most of which live under
extreme conditions of temperature or in harsh chemical environments and differ in basic ways from the other
main group of prokaryotic organisms, Bacteria

asexual reproduction - ansthe process by which an organism produces a new, genetically identical organism
without the use of gametes

ATP - ansthe molecule that delivers usable chemical energy for almost all processes and reactions that a cell
must undergo to survive

Calvin cycle - ansthe stage of photosynthesis in which carbon dioxide from the atmosphere is assembled into
sugars; also called light-independent reactions

carrier protein - ansa membrane transport protein that allows molecules to cross passively to the other side of
the membrane

cell - ansthe basic unit of life, of which all living things are made

cell differentiation - ansthe process of cell modification from a generalized cell to one that performs a specific
task

, cell membrane - ansthe membrane surrounding the cell; composed of a bilayer of phospholipids

cell theory - ansthe theory that states that the cell is the basic unit of life and that cells come only from existing
cells

cell wall - ansa rigid structure surrounding a cell, outside the cell membrane, that gives the cell support and
shape

cellular respiration - ansthe process of breaking down glucose for the production of ATP in the presence of
oxygen

central vacuole - ansa membrane-bound compartment in a plant cell that helps regulate the water content of
the cell, store waste material, and support the cell through internal pressure

centromere - ansthe point in a chromosome at which two chromatids are joined

chlorophyll - ansa molecule in plants that plays a key role in photosynthesis

chloroplasts - ansthe organelles responsible for capturing light energy in photosynthetic organisms; contain
chlorophyll

chromatid - ansone of the two identical strands of a chromosome

chromosome - ansa single long molecule of DNA wound around proteins called histones

concentration gradient - ansthe region over which there is a change in concentration of a substance

cristae - ansthe folds of the inner membrane of a mitochondrion

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