Upon analysis of the primary structure of an unknown protein, it is shown that almost all of the amino acids of this protein are shown to be hydrophobic. What could be said of this protein?
a) Nothing can be discerned about this protein from its primary structure since we cannot predict its structure.
b) This protein most likely resides in the cytoplasm.
c) This protein is a steroid hormone.
d) This protein is most likely a DNA binding protein.
e) This protein probably resides in a membrane.
Ans: e) This protein probably resides in a membrane.
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In vertebrates, the location of spinal cord damage determines the region of the body that is impaired. This is a product of:
A. organization of efferent neurons. B. localization of spinal ganglia. C. segmentation of the spinal cord. D. organization of spinal nerves.
How might drugs that interfere with the
functioning of the apicoplast in the malariacausing protist probably not be harmful to humans?
a. the drugs would kill the protist before it infected a human b. the drug would prevent the protist from photosynthesizing which is its energy source c. humans never evolved photosynthetic organelles and thus would be unaffected by a drug targeting that type of organelle d. humans already have resistance to apicoplast drugs e. any drug that would prevent the functioning of apicoplasts would not work in a human system
In Drosophila, assume that the gene for scute bristles (s) is located at map position 0.0 and that the gene for ruby eyes (r) is at position 15.0. Both genes are located on the X chromosome and are recessive to their wild-type alleles
A cross is made between scute-bristled females and ruby-eyed males. Phenotypically wild-type F1 females were then mated to homozygous double mutant males, and 1000 offspring were produced. Give the phenotypes and frequencies expected.
The progesterone receptor (PR) is a steroid hormone receptor and transcription factor. The protein SRC-1, which does not bind DNA by itself, can bind to PR and increase expression of genes regulated by PR. Based on this information, SRC-1 is best described as a(n)
A. specific transcription factor. B. coactivator. C. inducer. D. general transcription factor.