The main contents of the biochemistry course include（）
A. Chemical composition of organisms
B. Metabolism of substance and energy
C. Information metabolism
D. Laws of genetics
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Which of the following statements about the biochemistry is correct（）
A. Biochemistry is an interdisciplinary subject of chemistry and biology
Biochemistry studies the chemical composition of organisms
C. Biochemistry studies various chemical changes that drive the movement of life
D. Biochemistry and Molecular Biology are closely related and overlap in part
Regarding the type and distribution of RNA, which of the following statements is correct（）
A. RNA is mainly found in the nucleus
B. mRNA accounts for about 5% of the total RNA of the cell and serves as a template in protein synthesis
C. rRNA accounts for 80% of the total RNA of the cell, is a component of the ribosome, and is a place for protein synthesis
D. tRNA accounts for 10-15% of the total RNA of the cell, and plays the role of carrying activated amino acids in protein synthesis
The secondary structure of DNA refers to（）
A. α-helix
B. β-sheet
C. β-turn
Double helix structure
After the complete hydrolysis of DNA and RNA, the characteristics of its products are（）
A. Different pentoses and different bases
B. Different pentoses and the same bases
C. The same pentose and the same base
D. The same pentose and different base
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