Acyclovir is an antiviral chemical that resembles a nucleotide but lacks a 3' OH group and cannot form phosphodiester bonds. Why is Acyclovir useful in treating some viral infections?
A. Acyclovir stops viral protein synthesis.
B. Acyclovir halts viral DNA replication.
C. Acyclovir blocks the assembly of viral cell capsules.
D. Acyclovir hydrolyzes viral polysaccharides.
B
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Which of the following is true of embryonic stem cells but not of adult stem cells?
A) They normally differentiate into only eggs and sperm. B) They can give rise to all cell types in the organism. C) They can continue to reproduce for an indefinite period. D) One aim of using them is to provide cells for repair of diseased tissue.
A traditional technique used to quantify specific types of microbes in natural samples, enrichment cultures, and food or water samples is known as the ________ ________ ________ technique.
Fill in the blank(s) with the appropriate word(s).
Wolf's law is concerned with...
What will be an ideal response?
As the size of a cell increases,
A. the surface area increases faster than the volume. B. the surface area and the volume increase at the same rate. C. the volume increases faster than the surface area. D. there is no relationship between surface area and volume.