Enzymes
A. accelerate bio-chemical reactions
B. consist of amino acids
C. have optimum activity at body temperature
D. have all these properties
Answer: Option D
A. accelerate bio-chemical reactions
B. consist of amino acids
C. have optimum activity at body temperature
D. have all these properties
Answer: Option D
The fibers, such as nylon and polyester, that are made from chemical substances are called:
A. Natural fibres
B. Wool
C. Synthetic fibres
D. Silk
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