Which technique can be used to detect mutated genes?
a. DNA probes
b. biopsy
c. x-rays
d. MRI
e. radioactive monoclonal antibodies
ANSWER: a
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A drug designed to inhibit reverse transcriptase activity would target
A) coronaviruses and rhabdoviruses. B) hepadnaviruses and retroviruses. C) retroviruses. D) viruses with RNA genomes.
Consider the figure illustrating the two major classes of hormones and their actions. Which class of hormones would you expect to be ideally suited for long-term processes such as growth and development?
A) protein hormones, because they can relay messages B) steroid hormones, because they can turn specific genes on or off C) protein hormones, because they cannot cross cell membranes D) steroid hormones, because they can diffuse across cell membranes
Which of the following is true?
a. RNA is usually single-stranded b. DNA is usually single- stranded c. DNA contains uracil d. RNA contains thymine
Why do water and small molecules move from the glomerulus into the filtrate?
A. glomerular blood pressure B. active transport C. diffusion against the concentration gradient D. diffusion down the concentration gradient E. secretion