AQA GCSE Biology Unit 1 Flashcards

Covers all key terms/definitions for GCSE



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The closeness of a measurement to the true value

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A characteristic that helps an organism to survive in its environment

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Adult cell cloning 

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A process in which the nucleus of an adult cell is inserted into an unfertilised egg cell from which the nucleus has been removed, and the cell divides and develops into a new individual

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Aerobic respiration

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Respiration that requires the presence of oxygen to release energy from glucose, producing carbon dioxide and water

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A nutrient rich-jelly obtained from seaweed used for growing microbes 

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Anaerobic respiration

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Respiration which does not need oxygen - the release of energy from glucose without oxygen. The process releases less energy than aerobic respiration

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A chemical compound, often produced by microbes, that destroys bacteria

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A chemical compound produced by white blood cells when the immune system detects the presence of a pathogen. Antibodies are specific to a particular pathogen, that is, each type of antibody attacks only one type of pathogen

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A cell marker protein on the outside of a cell. Antigens differ between people

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A chemical compound used to stop the growth of micro-organisms on living tissue

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Asexual reproduction

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Reproduction from one cell of a parent organism by simple cell division, without fertilisation of gametes, that is, without fusion of male and female sex cells

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A plant hormone that affects growth, rooting and flower and fruit formation

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A single-celled micro-organism without a nucleus. Bacteria can reproduce quickly, and some cause disease

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Balanced diet

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 A diet made up of a variety of different foods to provide energy and all the nutrients needed to stay healthy.

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Biological material; in particular, the total mass of living material at a specified level in a food chain or in a specified area

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The centre of the nervous system, responsible for interpreting sensory signals, co-ordinating motor responses and higher activities such as thought and memory 

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Body colouring and/or shape to help conceal an organism in its environment 

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An illegal drug that can produce a sense of euphoria (well being), but also anxiety and loss of short term memory. 

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A food type that is the main energy source in the diet. Carbohydrates, for example, sugars and starch, contain only the elements carbon, hydrogen and oxygen. 

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Carbon cycle

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The way in which carbon atoms circulate between living organisms and the physical environment

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Central Nervous system

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The brain and spinal cord

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thanks- helpful im sure :P






seems really good jw whether they are in question and answer form or is it just answers?? sorry seems dumb but im confused loool

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