A Level Biology
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A level Biology 213
Latest content A Level Biology
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 t...
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A level Biology•A level Biology
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Biology• By trizahmanene
Biology Review 
Alleles - ansdifferent forms of a gene 
 
Biodiversity - ansResults in stability in an ecosystem. Biodiversity is a measure of the number and types of organisms that live in an ecosystem 
 
Cell Wall - ansstrong layer around the cell membrane in plants, algae, and some bacteria 
 
Chargaff's Rule - ansequal amounts of adenine bonds with thymine and equal amount of guanine bonds with cytosine 
 
Chromosomes - ansthreadlike structures made of DNA molecules that contain the genes...
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A level Biology•A level Biology
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Biology• By trizahmanene
Biology Quiz 2025 
10% rule -ansonly 10% of the total energy produced at each trophic level is available to the next level. The amount of energy passed up to the levels of the food pyramid reduces as you go up. 
 
1st law of Thermodynamics -ansthe law that states that energy cannot be created nor destroyed 
 
2nd law of Thermodynamics -answhenever energy is converted from one form to another form some energy is lost as heat 
 
Abiotic -ansnon-living 
 
Activation Energy -ansthe energy that an at...
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A level Biology•A level Biology
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Biology• By trizahmanene
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, m...
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A level Biology•A level Biology
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Biology• By trizahmanene
Biology EOC Review 
activation energy - ansenergy needed to start a chemical reaction; lowered by enzymes 
 
active transport - ansmovement of molecules across a membrane requiring energy to be expended by the cell 
 
adaptation - ansinherited characteristic that increases an organism's chance of survival 
 
allele - ansthe different forms of a gene; could be dominant or recessive 
 
amino acid - ansbasic building blocks of proteins 
 
analogous structures - ansstructures that do not have a c...
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A level Biology•A level Biology
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Biology• By trizahmanene
Biology - Test Questions 
A molecule with a partial positive charge on one side and a partial negative charge on the other is called a(n)... - anspolar molecule 
 
Acid solutions have a pH that is where on the pH scale? - ansbelow 7 
 
Amino acids are monomers of... - ansproteins 
 
Animals store glucose-containing fragments in the form of... - ansGlycogen 
 
Basically, the biological term for "keeping things the same". - anshomeostasis 
 
Because certain chemical characteristics do not al...
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A level Biology•A level Biology
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Biology• By trizahmanene
Biology - Genetics 
adenine - ansA base thats found in DNA. It will only bond with Thymine. 
 
allele - ansForm of a gene. Each characteristic has two alleles. 
 
amino acid - ansBuilding blocks of protein 
 
asexual reproduction - ansReproduction of identical offspring from a single parent. No gametes involved 
 
autosomes - ansAny chromosome other than the sex chromosomes. 
 
base - ansOne of four chemicals which make up the 'rungs' of DNA; A;T;C;G 
 
base-pair - ansTwo bases making each...
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A level Biology•A level Biology
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Biology• By trizahmanene
Biology Vocabulary List 2025 
Abiogenesis - ansa hypothetical organic phenomenon by which living organisms are created from nonliving matter 
 
Acid - ansany of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt 
 
Activation Energy - ansthe energy that an atomic system must acquire before a process (such as an emission or reaction) can occur 
 
Active Site - ansThe specific portion of an enzyme that attaches to the subst...
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A level Biology•A level Biology
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Biology• By trizahmanene
This is best for class 12
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A level Biology•A level Biology
This is a a study notes that contains about biology it has cells, creation and many more.
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A level Biology•A level Biology