Suppose that a cell has a genetic mutation such that the primase enzyme is unable to make RNA primers. Also, assume that all of the other enzymes directly involved in DNA replication are still functional in these cells. How much of the process of DNA replication would you expect to see in these cells?
a. None; no part of the DNA replication process could occur.
b. Both the leading and lagging strand would be synthesized, but Okazaki fragments would not be joined together.
c. The DNA helix would be unwound by helicase, but no new strands would be produced.
d. The leading strand woul
Answer: c. The DNA helix would be unwound by helicase, but no new strands would be produced.
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Four of the five answers listed below exhibit a dominant sporophyte stage. Select the exception
a. Bryophytes b. Monocots c. Eudicots d. Gnetophytes e. Cycads
What stage of translation occurs when ribosomal subunits and tRNAs converge on mRNA?
a. initiation b. elongation c. termination d. peptide bond formation e. elongation and peptide bond formation
How do the phospholipids in vegetable oil differ from those of animal fat?
a. The fatty acid tails bend. b. The fatty acid tails lack double bonds. c. The fatty acid tails are a chain of saturated fats. d. The fatty acid tails solidify at room temperature. e. The fatty acid tails interact via van der Waals forces.
Select the correct statement.
A) in humans, meiosis of diploid cells in the ovaries produces haploid female gametes, or eggs B) in humans, mitosis of haploid cells in the testes produces haploid gametes, or sperm C) in plants, diploid cells in the anther undergo meiosis to produce eggs D) in plants, diploid cells in the ovule undergo meiosis to produce diploid gametes E) none of the choices is correct