In the pUC plasmids, a polylinker region that includes multiple restriction sites is embedded in the lacZ component. If a sequence of interest is inserted into this region, what is the effect on lacZ?
What will be an ideal response?
inactivation
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Which one of the following statements most accurately describes methylation?
A. Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, increasing the probability of gene expression. B. Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, decreasing the probability of gene expression. C. Methyl groups are most often added to adenine-thymine base pairs because they are held by only two hydrogen bonds, and this increases the probability of gene expression. D. Methyl groups are most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression. E. Methyl groups are added to most bases in the promoter region of a specific gene so that RNA polymerase and its associated proteins will bind more efficiently.
Individuals with blood type AB have which blood antibody(ies)?
What will be an ideal response?
If a cube has sides of 3 nm, what are the surface area and the volume of the cube?
A. 18 nm2, 6 nm3 B. 38 nm2, 16 nm3 C. 24 nm2, 8 nm3 D. 54 nm2, 27 nm3 E. 64 nm2, 24 nm3
For the following questions, choose the letter from the list below that best matches the description (please note the answer should be a single upper case letter):A. DesertB. SavannaC. TaigaD. Temperate grasslandE. Tropical rain forestRestricted by water availability; 20 degrees to 30 degrees latitude; hot sunny days, cold nights; annuals; shrubs with long roots; succulents.
Fill in the blank(s) with the appropriate word(s).