Which of the following is not true of conjugation?
A. Involves the action of bacteriophage
B. Involves direct contact between cells
C. Transfers genes for enzymes and adherence molecules
D. The donor retains a copy of the transferred genes
E. Transfers genes for drug resistance
Answer: A
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A hydrophobic amino acid R group (side group) would be found where in a protein?
A. forming a peptide bond with the next amino acid in the polypeptide chain B. on the outside of the folded chain, in the water C. forming hydrogen bonds with other R groups D. on the inside of the folded chain, away from water E. only at one end of a protein chain
When the diaphragm is relaxed, it allows air to leave the lungs including the residuals volume.
a. true b. false
Didinium are carnivorous protista, that prey on other, slower moving protista. A student is studying Didinium feeding rates after 1, 3, and 5 days of food deprivation. How should she classify the organism she is studying?
What will be an ideal response?
Which structure is part of the placenta and completely surrounds the embryo?
A) chorion B) amnion C) yolk sac D) allantois