Histamine causes all of the following except
A. pruritis and headache.
B. constriction of smooth muscle of bronchi and the intestine.
C. wheal and flare reaction in skin.
D. relaxation of vascular smooth muscle.
E. increased sensitivity to pain.
Answer: E
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After fertilization, the zygote undergoes a round of divisions in a process called ____
Fill in the blank with the appropriate word.
Which of the following occurs to make a genetic profile?
a. DNA is isolated from a stem cell. b. DNA is cut into fragments, using enzymes. c. Specific genes and loci are identified on the DNA. d. DNA is transcribed and translated.
In Figure 8.3, if compound C reacts with the allosteric site of enzyme A, this would exemplify
A) a mutation. B) repression. C) feedback inhibition. D) competitive inhibition. E) transcription.
Select the correct statement regarding the human female reproductive system.
A. The Fallopian tubes transport ova from the ovary to the uterus. B. The uterus is lined with granulosa cells. C. The ovarian fimbria is the functional unit of the ovary. D. The granulosa cells secrete testosterone, which triggers menarche. E. The cervix contains corpora cavernosa tissue, which is a type of erectile tissue.