To form a blood clot, a series of plasma proteins must activate in a given sequence. If DNA info for one such protein mutates such that the resulting protein is nonfunctional, predict the consequence.
A. It depends on which protein is affected.
B. Regardless of the protein involved, the clot would not form.
Answer: B
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As people age, their thymus shrinks. How does thymus shrinkage affect the effectiveness of vaccinations? Vaccinations will have no effect because the entire immune system is shut down
A. Vaccinations will be more effective because at birth your thymus made all the T cells you'll need for your entire life. B. Vaccinations will be less effective because B cells will not produce appropriate amounts of antibodies. C. Vaccinations will be less effective because T cell maturation is reduced. D. Vaccinations will be as effective in aging patients as in young patients because T cells develop in the bone marrow.
Sewage treatment processes result in the production of ________, which can be used to make electricity.
A. hydrogen gas B. methane C. carbohydrates D. nitrates
Which of the following is FALSE of bacterial DNA?
a) Most bacterial genomes consist of a single circular DNA molecule. b) Bacterial DNA is not attached to ANY proteins that help to compact it. c) Bacterial DNA is confined to a region in the cell called the nucleoid. d) Many bacteria contain additional DNA in the form of small circular molecules called plasmids. e) Bacterial DNA is double stranded just like eukaryotic DNA. .
Assume that a species has a diploid chromosome number of 24. The term applied to an individual with 36 chromosomes would be ________
A) tetraploid B) allopolyploid C) aneuploidy D) monoploid E) triploid