The Meselson and Stahl's experiment provided conclusive evidence for the semiconservative replication of DNA in E. coli. What pattern of bands would occur in a CsCl gradient for conservative replication?
What will be an ideal response?
After one generation in the 14N, there would be two bands, one heavy and one light (no intermediate). After the second generation in the 14N, there would also be two bands, one heavy and one light (no intermediate).
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Proteins consist of
(a) monosaccharides linked in chains. (b) amino acid units. (c) polysaccharide units. (d) condensed fatty acids.
If you closed your eyes, you would still be able to write your name on a piece of paper. Which
receptors are most involved with this activity?
a. mechanoreceptors b. chemoreceptors c. photoreceptors d. all of these
Progesterone is produced in the pituitary and acts directly on the uterus
Indicate whether the statement is true or false.
You analyze a blood sample taken from a man who survived for 2 days in the desert with no water to drink. Based on your knowledge of kidney physiology, you are not surprised to find that his blood level of ADH is
A) higher than normal. B) lower than normal. C) zero. D) normal.