In which of the following stages of the viral infectious cycle do enveloped viruses usually acquire their envelopes?

A. Penetration
B. Assembly
C. Release
D. Component biosynthesis


Answer: C

Biology & Microbiology

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Jet-lagged travelers are often advised to take ______ to restore their normal circadian rhythms

A. melatonin B. glucose C. calcitonin D. cortisol E. thyroxine

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A male has been tested, and his sperm seem to be normal. They are motile and seem to be surviving for the appropriate amount of time. However, the sperm don't seem to be able to fertilize an egg

What part of the sperm is most likely to be malfunctioning? A) the tail B) the head C) the midpiece D) the acrosome

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What is the role of the FtsZ protein in bacterial cells?

What will be an ideal response?

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A fetus is born with cardiac defects, CNS malformations, microtia, and thymic hypoplasia. The fetus was exposed in utero to which of the following drugs?

A. Cocaine B. Isotretinoin C. Thalidomide D. Tobacco E. Valproic Acid

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