In contrast to most dsDNA animal viruses, the poxviruses replicate solely in the cytoplasm of the host cell. What does this suggest about the virus?
What will be an ideal response?
All cellular DNA replication occurs in the nucleus. DNA polymerases are synthesized in the cytoplasm and are transported into the nucleus where they are active. Replication of viral DNA in the cytoplasm would require DNA polymerase activity take place in the cytoplasm. One possibility is that the viral genome includes a gene for a DNA polymerase and that a DNA polymerase enzyme is packaged in the virion. Otherwise, the virus has some mechanism for diverting cellular DNA polymerase to the cytoplasm. The first possibility is the simpler explanation.
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Plants need which molecules to carry out photosynthesis?
a. H2O only b. CO2 only c. O2 only d. both CO2 and O2 e. both CO2 and H2O
Suppose the amount of water that has evaporated from the ocean has increased per unit of time. What can be expected to happen at points B and E in the accompanying diagram?
What will be an ideal response?
Which of the following statements is true?
a. The hydrogen bonding of cytosine to guanine is an example of complementary base pairing. b. In DNA, adenine always base pairs with guanine, and cytosine always base pairs with thymine. c. Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base. d. When adenine base pairs with thymine, they are linked by three hydrogen bonds. e. None of these statements are true
Gammaproteobacteria of the genus (Escherichia/Pseudomonas/Vibrio) catabolize carbohydrates using pathways other than the standard glycolytic (Embden-Meyerhof) pathway
What will be an ideal response?