Which of the following statements about telomeres is INCORRECT?
A. Telomeres are produced by telomerase.
B. Telomeres are found at the ends of DNA.
C. Telomeres are short repeat sequences.
D. Telomeres would predominate more in cells of older than younger individuals.
E. Telomeres are crucial to the viability of a cell that replicates often.
D. Telomeres would predominate more in cells of older than younger individuals.
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Which of these habitats is likely to harbor the most recently diverged species?
A) A5 B) B4 C) A3 D) B2 E) A1
Why is it not surprising that Staphylococci are the leading cause of wound infections?
A. This genus is readily present as a part of the normal microbiota on most people's skin, so it could easily enter wounds. B. Members of this genus are all particularly virulent and highly capable of causing numerous infections. C. Staphylococci cannot be eradicated from the skin due to multidrug resistance in most members of the genus. Drugs simply don't kill them. D. Staphylococci are capable of a higher degree of spontaneous mutation than most microbes. This makes them able to acquire antibiotic resistance very readily, making them hard to eliminate by pre-surgical antibacterial scrubs. As such, they commonly infect surgical wound sites.
The Na+-K+ pump moves how many sodium ions across the membrane with every action?
a. 3 out b. 3 in c. 2 out d. 2 in e. 5 out
Choose the defining characteristic of all arteries
A) They only carry blood back to the heart. B) They only carry blood away from the heart. C) They only carry deoxygenated blood. D) They only carry oxygenated blood.