Most enveloped viruses acquire their envelopes:

a) during the initial contact with the host cell
b) during penetration of the host cell when endocytosis occurs
c) during viral release from the host cell
d) during structural protein synthesis


Answer: c) during viral release from the host cell

Biology & Microbiology

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A patient in his forties is diagnosed with Huntington disease. The patient's mother is healthy and a genetic evaluation shows 25 and 26 CAG repeats within her HTT alleles

The patient's father died at age 24 when the patient was 2 and no genetic evaluation can be done. It is most likely that: A. the father was heterozygous for the defective HTT allele. B. the father was homozygous for the defective HTT allele. C. the mother is a carrier for the defective HTT allele. D. the HTT gene acquired additional CAG repeats during the 40 years of the patient's life.

Biology & Microbiology

Describe how exon shuffling could lead to the formation of novel proteins

What will be an ideal response?

Biology & Microbiology

The molecules of water resist separating from one another; a property that is called ________

a. evaporation b. cohesion c. temperature-stabilizing d. electronegativity

Biology & Microbiology

In human lungs, gas exchange occurs at the _____

a. two bronchi c. alveolar sacs b. pleural sacs d. both pleural sacs and alveolar sacs

Biology & Microbiology