When DNA is negatively super coiled, which of the following is a TRUE statement?
a) The DNA is under-rotated and does not allow transcription easily.
b) The DNA is over-rotated and does not allow transcription easily.
c) The DNA is under-rotated but allows transcription easily.
d) The DNA is over-rotated but allows transcription easily.
Ans: c) The DNA is under-rotated but allows transcription easily.
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You breed a black, long-haired rabbit with a white, short-haired rabbit. All of the offspring have long, black hair. If the genes for hair color and length are closely linked on the same chromosome, what would you expect to see in the F2 generation?
A. 15 black, long-haired: 1 black, short-haired: 1 white, long-haired: 5 white, short-haired B. 3 black, long-haired: 1 white, short-haired C. 9 black, long-haired: 3 black, short-haired: 3 white, long-haired: 1 white, short-haired D. 3 black, long-haired: 9 black, short-haired: 9 white, long-haired: 1 white, short-haired E. All long-haired black
Cocaine stops the reuptake of ________ from synaptic clefts
a. norepinephrine only b. serotonin only c. dopamine only d. all of the choices
Which cell organelle is responsible for the breakdown of fatty acids?
a. Golgi body b. ribosome c. mitochondrion d. lysosome e. peroxisome
Which statement best describes a lophophore?
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