66. Which of the following molecules can serve as the terminal electron acceptor
ID: 213822 • Letter: 6
Question
66. Which of the following molecules can serve as the terminal electron acceptor in electron-transport chains? bacterial A. Oxygern B. Sulfate C. Fumarate D. Nitrite E. All of the above 67. Indicate whether each of the following descriptions better applies to the genome of mitochondria (M) or nuclei (N) in vertebrates. Your answer would be a four-letter string composed of letters M and N only, e.g. MNMN. () It has a higher percentage of noncoding DNA. () It has a stricter codon usage () Its genes are present at higher copy numbers per cell. () Its evolutionary clock ticks much faster. Which of the following is NOT universally encoded by the mitochondrial DNA? A. Small ribosomal RNA B. Large ribosomal RNA C. A cytochrome oxidase subunit D. Transfer RNA 68.Explanation / Answer
Solution 66.
Oxygen act as terminal electron acceptor in ETC.
Solution 67.
NNMM
Nucleus has higher percentage of noncoding DNA than mitochondria.
Nucleus has a stricter codon usage.
Mitochondrial genes are present at high copy number per cell.
Mitochondrial evolutionary clock ticks much faster than nuclear clock.
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