In the picture below, what is encircled?
A. A single chromosome
B. A pair of homologous chromosomes
C. Two sister chromatids
D. A sister chromatid
Answer: D
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MOST fungi are harmless to humans, although certain superficial infections are quite common
Indicate whether the statement is true or false.
In the classic experiment conducted by Hershey and Chase, why was the pellet radioactive in the centrifuge tube that contained bacteria with viruses?
A) The radioactive viruses (coats plus DNA) were in the pellet. B) The radioactive protein coats of the viruses were in the pellet. C) The bacteria were in the pellet, and they had incorporated radioactive proteins into their cell membranes. D) The radioactive viruses were in the pellet, and the bacteria were in the supernatant. E) The bacteria were in the pellet, and many contained the radioactive viral DNA.
The alpha subunit can remain separated from the beta and gamma subunits as long as the ligand remains bound to the membrane bound protein.
Indicate whether the statement is true or false.
Most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the
A. CAM cycle. B. carbon cycle. C. Calvin cycle. D. Krebs cycle.