生物化学题 求解 速度..

生物化学题 求解 速度..
Ⅲ. Indicate whether each of the following statements is true (T) or false (F).
1. The direction of mitochondrial electron transfer is from the high redox potential to low redox potential.
2. A competitive inhibitor binds to an enzyme’s active site
3. After denaturation, DNA buoyancy density increase, DNA viscosity derease.
4. HDL can transport dietary cholesterol to the rest of the body.
5. All amino acids can turn to glucose in vivo.
6. To synthesis purine nucleotide and pyrimidine nucleotide are first synthesis base, then binding to ribose phosphate
7. The active sulfate refers to 3’-phosphate-5’phosphosulfate (PAPS)
8. Night-blindness is due to lack of vitamine A
9. Prokaryotic and eukaryotic mRNAs are all polycistronic product.
10. Nitrogenous total balance is ingested protein equality excrete protein
11. All the amino acids that constitute proteins are L-α-Amino acids.
12. Extremes of pH can kill enzymes
13. The tertiary structure of tRNA is like a cloverleaf.
14. All of the B vitamins as enzyme cofactors
15 The lac operon consists of one regulatory gene and one structural gene
16. Product deoxy purine nucleotide is from corresponding ribonucleotide reduction, the reduction come from monophosphate