All chemical reactions in the body are catalyzed by enzymes.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- In chemical reactions, all electrons rearrange around the nuclei.
- Enzymes speed up chemcial reactions by... A: lowering activation energy. B: increasing the activation energy needed. C: breaking the chemical energy needed. D: stopping the chemical reaction.
- Which one of the following enzymatic reactions is reversible? ( ) A: The reaction catalyzed by glycogen phosphorylase B: The reaction catalyzed by phosphoglycerate kinase C: The reaction catalyzed by pyruvate kinase D: The reaction catalyzed by fructose bisphosphatase-1 E: The reaction catalyzed by hexokinase
- All spontaneous reactions are exothermic. A: 正确 B: 错误
- All exothermic reactions are spontaneous reaction . A: 正确 B: 错误