Sequencing of HIV-1 revealed that it is most closely
related to which of the following?
a. simian immunodeficiency virus
b. feline leukemia
c. bovine immunodeficiency virus
d. hepatitis B
e. all of these
Answer: a
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Eukaryotic and archaeal cells are able to regulate cellular processes at which of the following levels?
A. Mutational B. Translational C. Transcriptional D. Physiological E. Posttranscriptional
An endocervical swab was collected from a 26-year-old woman with a purulent discharge. The Gram stain revealed the following: • Many white blood cells (WBCs) • Moderate gram-negative diplococci • Moderate gram-negative coccobacilli • Few yeast Based on these findings, what would be the next course of action?
a. Report the isolation of Neisseria gonorr-hoeae. b. Work up the yeast. c. Report the Gram stain, and follow up with culture. d. Request a new specimen; this one is con-taminated.
If the effector protein phospholipase C failed to cleave phosphatidylinositol-4,5-bisphosphate (PIP2 ), the action of what enzyme would be affected?
A. cAMP B. IP3 C. protein kinase A (PKA) D. protein kinase C (PKC)
The primary means of heat loss during exercise is radiation.
a. true b. false