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B7 KEY WORDS
Organic Contains Carbon

Photosynthesis The process in green plants which uses energy from sunlight to
convert carbon dioxide and water into the sugar glucose

Autotroph An organism which produces its own organic compounds

Heterotroph An organism which must eat other organisms for its source of organic
compounds…

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Limiting Factor The factor which prevents the rate of photosynthesis from
increasing at a particular time. This may be light intensity, temperature, carbon
dioxide concentration, or water availability

Compensation Point Respiration uses glucose in a plant, photosynthesis
produces glucose in a plant. When respiration and photosynthesis are taking
place in…

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Sickle-Cell Anaemia A disease in which a large number of red blood cells are sickle
shaped and cannot carry oxygen properly

Haemoglobin The protein molecule in red blood cells. Haemoglobin binds to
oxygen and carries it around the body. It also gives blood its red colour

Genetic Modification Altering the…

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Autoradiography Gene probes are often made using radioactive DNA bases. The
radioactivity blackens X-ray film, which shows whether the probe has bound to
the DNA sample

Plasma The clear straw-coloured fluid part of the blood

Circulatory System The heart and blood vessels. The circulatory system
transports useful chemicals and waste…

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Co-dominant Some genes have two alleles which are neither dominant nor
recessive. If a person has a copy of both these alleles, they will both be expressed
and show up in that person. These alleles are co-dominant

Atrium (plural of atria) One of the upper chambers of the heart. The…

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ATP (Adenosine triphosphate) is a chemical used by living things to store and
transfer energy during chemical reactions

Vertebrate An animal with a spinal column (backbone)

Skeletal-Muscular System All the bones and muscles which work together to
move the body

Skeleton The bones that form the framework for the body.…

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