Which of the following best describes why women should avoid drinking alcohol when pregnant?
a. alcohol use should be avoided during pregnancy because whatever the mother drinks will pass through the liver into the fetus, damaging its growing body
b. drinking alcohol during pregnancy should be avoided because the fetus's lungs are underdeveloped and cannot process the alcohol.
c. alcohol use should be avoided during pregnancy because it can cause the fetus to be born with physical deformities and mental difficulties
d. women should avoid alcohol during pregnancy because it increases both the mother's and the fetus's hanse of developing alcohol related birth defects.

Which of the following is not a symptom of chronic fatigue syndrome a) pain in joints with swelling b) low-grade fever c) unexplainable muscle weakness or pain d) forgetfulness, irritability, and confusion

Which of the following is not a symptom of chronic fatigue syndrome

Poliovirus is an rna virus of the picornavirus group, which uses its rna as mrna. at its 5' end, the rna genome has a viral protein (vpg) instead of a cap. this is followed by anontranslated leader sequence, and then a single long protein-coding region (~7000 nucleotides), followed by a poly-a tail. observations were made that used radioactive amino acid analogues. short period use of the radioactive amino acids result in labeling of only very long proteins, while longer periods of labeling result in several different short polypeptides. what conclusion is most consistent with the results of the radioactive labeling experiment? a) host cell ribosomes only translate the viral code into short polypeptides.b) the rna is only translated into a single long polypeptide, which is then cleaved into shorter ones.c) the rna is translated into short polypeptides, which are subsequently assembled into large ones.d) the large radioactive polypeptides are coded by the host, whereas the short ones are coded for by the virus.