An experimental chemical has been shown to selectively cleave phosphodiester bonds. How would this affect a virus?
A. Digest the capsid
B. Alter the host binding site
C. Fragment the genome
D. Dissociate the envelope
E. Hydrolyze the protein coating
Answer: C
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You are asked to participate in a clinical trial for a new drug that can activate telomerase. Which of the following is a likely risk of such a drug?
A. decreased capacity for tissue repair B. increased vulnerability to cancer C. premature aging D. decreased telomere length Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about telomeres and telomerase? Consider Possibilities · What other information is related to the question? Which information is most useful? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following proteins-functions is mismatched?
A. DNA polymerase-DNA synthesis B. DNA polymerase-primer removal and replacement with DNA C. DNA primase-production of RNA primer D. topoisomerase-separates double-stranded DNA into single strands E. single-stranded binding proteins-prevents single DNA strands from reforming into a double helix
Which portion of the nephron is not permeable to water?
a. Bowman’s capsule b. proximal tubule c. descending limb of loop of Henle d. ascending limb of loop of Henle e. collecting ducts
The subatomic particles that are found in the nucleus of an atom are the
a. protons and electrons. b. neutrons and protons. c. electrons only. d. protons only. e. electrons and neutrons.