Biology - Key words and meanings

Key words and their meanings for the whole of unit 1, enjoy.

• Metabolism = all chemical reactions in cells, it needs energy through respiration.
• Respiration = process in our body that releases energy.
• Metabolic rate = The rate of the chemical reactions (how fast they go) in cells.
• Malnourished = not having a balanced diet means you're malnourished.
• Pathogens = disease causing mircoorganisms.
• Phagocytes = the white blood cells that digest/ingulf microbes.
• Lympocytes = the white blood cells that produce antibodies.
• Antitoxins = the chemical subtance produced by white blood cells that counteract the effect of the toxins produced by pathogens in you body.
• Vaccines = dead or inactive pathogen that encourages your body to produce antibodies.
• Memory cell = Lympocytes that already have certain antibodies memorised ready for a harmful pathogen.
• Endocrine = system of glands that release a number of signalling chemical reactions known as hormones.
• Receptors = specialised cells that detect stimuli on your sense organs (eyes, tongue, nose, ears and skin).
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