Most viruses form a capsid around their nucleic acid core. This capsid is composed of
A. monosaccharides.
B. lipoproteins.
C. glycoproteins.
D. proteins.
Answer: D
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Amniocentesis and chorionic villus sampling are two methods of prenatal diagnosis. One important
difference between these techniques is that A. chorionic villus sampling is more routinely prescribed. B. amniocentesis can diagnose chromosome disorders, while chorionic villus sampling cannot. C. chorionic villus sampling can be performed earlier than amniocentesis. D. maternal risks are higher with chorionic villus sampling. E. the risk of miscarriage is higher with amniocentesis than with chorionic villus sampling.
When affected males produce all affected daughters and no affected sons, the pattern of inheritance is likely to be
____________________.Fill in the blank(s) with the appropriate word(s).
Which stage in cellular respiration directly requires the presence of O2?
A. Glycolysis B. The Krebs cycle C. Electron transport D. Both a and b are correct.
Compared with a eukaryotic cell, a prokaryotic cell ______.
a) is not living b) is larger c) lacks organelles d) has no method of movement