Analysis of a single DNA strand yielded this information on amounts of some nucleotides: 43 units of cytosine and 51 units of adenine. What amounts would you expect of guanine and thymine in that strand? What amounts would you expect of all bases in the complementary strand?
What will be an ideal response?
There is no way to determine the amounts of guanine and thymine in the analyzed strand based on the amounts of cytosine and adenine; the guanine and thymine would have to be determined directly. In the other strand, the amount of guanine equals the amount of cytosine in the analyzed strand, and the amount of thymine equals the amount of adenine in the analyzed strand, because of the way the bases pair to hold the strands together. Once the amounts of guanine and thymine in the first strand are determined, the amounts of cytosine and adenine can be determined in the complementary strand.
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Besides blood, what other fluid returns to the dural sinuses of the brain? To what vein do the dural sinuses return these fluids?
What will be an ideal response?
Muscle tissue has all of the following properties except ________
A) excitability B) extensibility C) contractility D) secretion
The moderator band is located in the
A) right ventricle. B) left ventricle. C) left atrium. D) interventricular sulcus. E) right atrium.
Which function is not performed in the hypothalamus
a. body temperature control b. coordination of the autonomic nervous system c. food intake control d. production of posterior pituitary hormones e. evaluation of sensory inputs from skeletal muscles