Suppose you take a cell from an adult cow and attempt to use it to produce a clone of that cow. If telomerase is not
functioning in that cell or in any of the cell’s progeny, what would you expect to happen to your clone?
a. The clone will be unable to grow.
b. When the clone matures, it will most likely have cancer.
c. The clone's cells may divide, but after a certain number of generations, cell division will stop.
d. The lack of telomerase should have no effect on the clone.
e. When the clone matures, it will most likely be sterile.
ANSWER: c
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Nacho suffers from terrible migraine headaches. He enters a clinical trial to test whether certain single nucleotide polymorphisms (SNPs) are associated with response to one drug but not another. This is an approach called
A) gene therapy. B) pharmacogenetics. C) genetic determinism. D) applied pharmacology.
The percent oxygen saturation of hemoglobin is highest in the:
a. tissues where oxygen concentration is lowest. b. tissues where oxygen concentration highest. c. venules where oxygen concentration lowest. d. pulmonary capillaries where oxygen concentration lowest. e. pulmonary capillaries where oxygen concentration highest.
Consider a red blood cell traveling in the renal artery. It passes through several different functional vessels before entering the renal vein. Consider the vessels listed below. Which one of the following answers lists the CORRECT order in which the red blood cell passes through these vessels? 1. peritubular capillaries 2. efferent arteriole 3. afferent arteriole 4. glomerulus 5. renal vein
A) 1, 2, 3, 4, 5 B) 3, 4, 2, 1, 5 C) 3, 2, 4, 1, 5 D) 2, 1, 3, 4, 5 E) 4, 3, 2, 1, 5
The representation H?O?H is known as a(n):
a. structural formula. b. simplest formula. c. molecular formula. d. Lewis structure. e. orbital diagram.