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Created by Amy Morris
over 9 years ago
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Question | Answer |
Activation Energy | The level of energy required to enable a reaction to take place. Enzymes reduce this time cause they're helpful like that |
Active Transport | Movement of substances across membranes against their concentration gradient. NEEDS ATP. Usually involves transport proteins |
Adaptation | A feature of a living organism that increases its chances of survival |
Adenine | A nitrogen-containing organic base found in nucleic acids. Pairs with thymine and uracil. PURINE |
Adhesion | Force of attraction between molecules of 2 different substances |
Adipose | Tissue made of cells that store fat. FAT CELLS |
Allele | A version of a gene |
Allopatric | Speciation due to organisms of a species being separated by geographical barriers + time = 2 different species |
Amino Acid | Protein monomers. Made up of an amino group (-NHH) and a carboxyl group (-COOH) |
Amylase | An enzyme that catalyses the hydrolysis of starch to sugar |
Amylose | Crystallisable form of starch (long, unbranched polysaccharide) |
Anaphase | In mitosis, the stage where the newly separated chromatids are pulled towards opposite poles of the nuclear spindle |
Antibiotics | Molecules produced by microorganisms that kill or limit the growth of other microorganisms |
Antibodies | Protein molecules released by the immune system in response to an antigen |
Antigen | A foreign molecule (protein or gylcoprotein) that can prevoke and an immune response |
Antigen-presenting cell | A macrophage that has ingested a pathogen and displays its antigens on its plasma membrane |
Apoplast pathway | Route taken by water between the cells |
Ateriosclerosis | Hardening of the artery walls and loss of elasticity caused by atherosclerosis and deposition of calcium |
Artificial Immunity | Immunity required through deliberate exposure to antigens or injection of antibodies |
Atherosclerosis/atheroma | The process of deposition of fatty acids in the lining of arteries to form atheroma. May lead to arteriosclerosis |
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