Answer the following statements true (T) or false (F)
1. DNA helicase and topoisomerase are similar insofar as they promote the unwinding and uncoiling of DNA.
2. If the sequence for one strand of DNA is 3?-TCGATT-5? then its complementary strand would have a sequence of 3?-AGCTAA-5?.
3. Okazaki fragments are sequences of DNA most often found on the lagging strand of DNA during DNA replication.
4. The progressive shortening of telomeres in DNA correlates with cell senescence.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
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An advantage of the smaller size of prokaryotes, compared to eukaryotes, is
A. high surface area relative to low cell volume. B. more rapid growth rates. C. compartmentalization of cellular processes in membrane-bound organelles. D. predators, parasites, and competitors constantly surround them. E. high surface area relative to low cell volume AND more rapid growth rates.
Given the following events involved in the regulation of blood volume, which one of the following answers best represents the order in which these events occurs?
1. sodium reabsorbed from distal tubules and collecting ducts 3. secretion of renin from juxtaglomerular apparatus 2. secretion of aldosterone 4. decrease in blood volume 5. production of angiotensin II A) 4, 2, 5, 3, 1 B) 4, 5, 2, 1, 3 C) 2, 3, 4, 1, 5 D) 4, 2, 5, 1, 3 E) 1, 4, 5, 2, 3
Your quadriceps are your
A. thigh muscles. B. upper arm muscles. C. calf muscles. D. shoulder muscles.
In microscopy, the term resolution
A) refers to the ability to distinguish fine structure and detail in a specimen. B) is the same as the total magnification of a specimen. C) is improved when longer wavelengths of light are employed. D) is only observed in stained specimens. E) refers to magnification when using the electron microscope.