Question
Which one is FALSE? a Electron transport in human mitochondria would be classified as interspecies electron transfer b Electron circuits have be engineered in living cells. c. Mitochondria have an electron circuit d. In the laboratory, some bacteria appear to have the ability to derive their energy directly from electrodes, e. As a general rule, all living things have some version of a TCA cycle. Which one is associated with a genetic defect of electron transport a Pyruvate kinase b. Citrate c. Complex I d. ATP synthase e. Ribonucleotide reductase Due to mitochondrial replacement techniques (MRT), there is now a human being with three parents. a. True, the child has genomic DNA from one woman, genomic DNA from one man, and mitochondrial DNA from another man. b. True, the child has genomic DNA from one man, genomic DNA from one woman, and mitochondrial DNA from another woman. c. No that has not happened yet---although it is technically possible. d. False, it is not possible to have three parents e. False, there is no evidence for a three-parent child in the world today. however, it is statistically likely that a child once lived sometime in human history who had three mothers and no father. Why is RNA less stable than DNA? a. This is a trick question because DNA is actually less stable than RNA due to the hemiacetal group of the ribose found only in DNA. b. This is a trick question because there is no difference in the stability of RNA compared to DNA. c. RNA is less stable because the 3'-5'-phosphodiester bond can form hydrogen bonds with the hydroxyl (--OH) that's attached to the C2 of the ribose found only in RNA polymers. d. RNA is less stable due to the proximity of the negative charge of the 3'-5'-phosphodiester bond to peptide bond of the ribose found only in RNA polymers. e. RNA is less stable due to the proximity of the negative charge of the 3'-5'-phosphodiester bond to the of the hydroxyl (--OH) that's attached to the C2 of ribose found only in RNA polymers. Independent assortment of chromosomes occurs during gamete formation (meiosis) in eukaryotic organisms. Who is credited with the discovery of independent assortment? a. Watson & Crick b. Thomas Hunt Morgan c. Olivia Judson d. Gregor Johann Mendel e. Johannes Friedrich Miescher
Explanation / Answer
27 a.
28. ATP synthetase
29. a.
30. e. RNA is less stable due to the proximity of the negative charge of 3' 5' phosphodiester bond to the hydoxyl that is attached to the C2 of the ribose found only in RNA polymers.
31. Gregor Johan Mendel
