2603910
Description
Flashcards by Amy Morris, updated more than 1 year ago
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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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