Biochem Acs Study Guide With Complete Solution 2024

Which of the following accepts electrons from mitochondrial NADH dehydrogenase? a. Cytochrome b b. Plastocyanin c. Ubiquinone d. Plastoquinone e. Cytochrome c {Ans: C}For a given reaction, if △G° is less than zero, then: a. Keq = 0 b. Keq < 0 c. 0 < Keq < 1 d. Keq = 1 e. Keq > 1 {Ans: E}Which of the following is the hydrophobic electron carrier which is mobile within the membrane? A. ubiquinone B. complex II C. cytochrome a D. cytochrome b E. cytochrome c {Ans: A}________ reads the 3' to 5' strand of DNA creating an RNA copy by adding nucleotides to the ______ end of the new RNA strand. a. Transcriptase, 5' b. RNA polymerase, 3' c. RNAse, 5' d. Polynucleotide phosphorylase, 3' {Ans: B}In most biochemical reactions, ∆PV is A. negligible B. positive C. negative D. dependent on ∆E {Ans: A}The equilibrium constant for the reaction catalyzed by malate dehydrogenase (malate to oxaloacetate) is about 5.9 × 10−6. Which of the following best describes the situation in which malate is converted to oxaloacetate during the citric acid (Krebs) cycle? a. The next reaction of the cycle, citrate synthase, is highly exergonic