Which of the following statements is true of non-homologous end joining (NHEJ)?
A) it is a double-strand repair pathway
B) it is error-prone
C) it is error-free
D) it utilizes the sister chromatid as a template for repair
E) both A and B
E
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What is meant by tidal ventilation?
A. Air moves into the lungs during inhalation and air moves out of the lungs during exhalation. B. Air moves in a continuous, unidirectional flow through the lungs. C. Water is pumped back and forth across the respiratory system. D. The ventilation rate increases and decreases at regular intervals. E. None of the answer options is correct.
A polyribosome would be found in which of the following types of cells?
A. Prokaryotic B. Eukaryotic C. Both
Independent assortment of chromosomes is a result of _____
A) the random way each pair of homologous chromosomes lines up at the metaphase plate during meiosis I B) the random combinations of eggs and sperm during fertilization C) the random distribution of the sister chromatids to the two daughter cells during anaphase II D) the diverse combination of alleles that may be found within any given chromosome
Which type of vascular tissue cell in a plant is dead at maturity?
A) vessel elements B) companion cells C) sieve-tube cells D) parenchyma cells