A person is infected with HIV. The individual is treated with several drugs, including azidothymidine (AZT). Which of the following is the most immediate effect of this drug?
A. It allows reverse transcriptase to proofread, and this will allow successful treatment with a vaccine.
B. It does not allow the virus to make a DNA copy of its genome.
C. It does not allow the viral genome to become integrated into the host genome.
D. It inhibits formation of the capsid.
E. It inhibits budding, as it is the reverse of the process by which HIV enters a cell.
B. It does not allow the virus to make a DNA copy of its genome.
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You and a friend were in line for a movie when you noticed the woman in front of you sneezing and coughing
Both of you were equally exposed to the woman's virus, but over the next few days, only your friend acquired flu-like symptoms and was ill for almost a week before recovering. Which one of the following is a logical explanation for this? A) Your friend had antibodies to that virus. B) You had an adaptive immunity to that virus. C) Your friend had an autoimmune disorder. D) Your friend had allergies.
Which cells provide diversity for the immune response?
a. macrophages b. T and B cells c. dendritic cells d. complement cells e. neutrophils
Ion channels are found in the plasma membranes of neurons and muscle cells
__________________ Indicate whether the statement is true or false.
Which of the following is not one of the four main groups of biomolecules?
A) electrolytes B) nucleic acids C) carbohydrates D) proteins E) lipids