Enzymes are often controlled by what mechanism? A. Methylation B. Glycosylation
ID: 100427 • Letter: E
Question
Enzymes are often controlled by what mechanism? A. Methylation B. Glycosylation C. Phosphorylation D. Acetylation Biotin, Coenzyme A, Flavin, Nicotinamide adenine, Thiamine pyrophosphate are examples of: A. Abzymes B. Coenzymes C. Cofactors D. Proteases An example of an amphipathic molecular within the plasma membrane is: A. Phosphoglyceride B. Cholesterol C. Peripheral protein D. Oligosaccharide In _____, a substance moves from a region of lower concentration to one of higher concentration, and this process requires the cell to expend energy. A. Passive transport B. Simple diffusion C. Active transport D. Facilitated diffusion The enzyme(s) involved in changing the supercoiled state of DNA included: A. Coilase B. Primase C. Helicase D. Topoisomerase/gyrase Which of the following is correctly matched: A. Transcription - cytoplasm B. Translation - cytoplasm C. Transcription - ribosomes D. Translation - nucleus Which of the following is incorrectly matched: A. tRNA - transports amino acids B. rRNA - combines with proteins to form ribosomes C. siRNA - affects protein expression D. microRNA - affects gene expressionExplanation / Answer
7 c phosphorylation
8 c cofactors
9 a Phosphoglyceride
10 c Active transport
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