How does the reproduction of HIV and lambda phage differ?
A. HIV contains reverse transcriptase enzyme, while lambda phage does not.
B. Immediately after HIV enters the cell, reverse transcriptase RNA is transcribed into DS DNA. Lambda phage reverse transcriptase DNA is integrated immediately into the host genome.
C. HIV contains integrase, while lambda phage does not.
D. HIV attaches to specific proteins on the cell surface, while lambda phage does not.
E. Lambda phage attaches to specific proteins on the cell surface, while HIV does not.
A. HIV contains reverse transcriptase enzyme, while lambda phage does not.
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A graduate student is trying to isolate bacterial mRNA for an enzyme that will degrade trinitrotoluene (TNT)
She's frustrated to find that the enzyme isn't produced when the bacterium in question is grown on nutrient agar. What might she do to solve the problem and obtain the mRNA? A. Add nitrogen and toluene to the agar to drive up synthesis of TNT. B. Add TNT to the agar-this will drive synthesis of the enzyme to degrade it, leading to production of the mRNA the student is looking for. C. Remove glucose from the agar-this will cause the bacteria to shift to other compounds for their energy purposes. D. Remove all sugars from the agar-this will cause the bacteria to shift to other compounds for their energy purposes. E. Add TNT to the agar-this will drive synthesis of the enzyme to degrade it, leading to production of the mRNA the student is looking for AND remove all sugars from the agar-this will cause the bacteria to shift to other compounds for their energy purposes.
Damage to which of the following would prevent the production of the most hormones?
1.hypothalamus
2.thyroid gland
3.pancreas
4.adrenal glands
What is the function of GTP?
a. An energy carrier b. An oxidizer to produce CO2 c. A scaffolding for carbon atoms d. An electron carrier
Which of the following are other names for yaws?
A. bouba B. frambesia tropica C. patek D. All of the choices are correct. E. None of the choices are correct.