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B3 Living & Growing
OCR Gateway B3 Living & Growing
Question | Answer |
---|---|
Nucleus | carries genetic information with chromosomes in the form of genes containing DNA |
Cell membrane | controls the movement of substances in and out of cells |
Cytoplasm | is where many chemical reactions happen. |
The structure of DNA as a double helix with cross links formed by ......... | Two Bases |
Amino Acids | Combine to make chains of proteins and sequences of DNA |
Enzymes | are proteins that are biological catalysts and can be used to cut DNA for fingerprinting. |
Enzymes work in ... | an optimum pH and temperature range |
Denaturing of an enzyme at extreme temperatures and pH | changes the shape of the active site and is irreversible. |
enzymes catalyse the chemical reactions | occurring in living cells: respiration, photosynthesis, protein synthesis. |