BioChemistry > EXAM > BIOCHEM Exam Questions and Homework Answers | 100% correct answers | 16 pages (All)

BIOCHEM Exam Questions and Homework Answers | 100% correct answers | 16 pages

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What is the advantage of fatty acid synthase (FAS) being a complex? a. No diffusion of products/substrates between reactions, increasing efficiency. b. Conservation of energy. c. No release of grow... ing hydrophobic product/substrate to the aqueous environment. d. All of the answers are correct. e. None of the answers are correct. 6. Nitrogen is a component of which molecules? a. Amino acids b. Lipids c. Nucleotides d. Disaccharides e. Both A and C 7. What is/are the primary transport form(s) of ammonia in our body? a. ATP b. Glutamine c. It is soluble in water and does not need a specific transport form. d. Glutamate e. Both B and D 8. The difference between a ribonucleotide and a deoxyribonucleotide is: a. A deoxyribonucleotide has an -H instead of an -OH at C-2. b. A deoxyribonucleotide has an -H instead of an -OH at C-3. c. A ribonucleotide has an extra -OH at C-4. d. A ribonucleotide has more structural flexibility than deoxyribonucleotide. e. A ribonucleotide is a pyranose, deoxyribonucleotide is a furanose. 9. RNA polymerase: a. Binds tightly to a region of DNA thousands of base pairs away from the DNA to be transcribed. b. Can synthesize RNA chains without a primer. c. Separates DNA strands throughout a long region up to thousands of base pairs, then copies one of them. d. Synthesizes RNA chains in the 3' → 5' direction. 10. What is NOT a part of regular processing of primary mRNA transcript in a eukaryotic cell? a. Attachment of a long poly A sequence at the 3’ end. b. Excision of introns. c. Joining of exons. d. Making a 5’ cap by adding a modified guanine nucleotide at the 5’ end. e. Conversion of normal bases to modified bases, such as inosine and pseudouridine. 11. Proteins usually have a low concentration of? a. Met and Trp 12. The start codon for most organisms is: a. ATG b. AAA c. AGG d. AUG e. UAA [Show More]

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