this image shows a sagittal section of the male R.S. what does 3 represent?
What will be an ideal response?
corpus spongiosum
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Which of the following statements about malaria is FALSE?
a. It kills about 2 million people each year. b. It can be treated with the drug chloroquine. c. An effective vaccine exists to protect from it. d. It can be treated with the drug quinidine. e. It can be treated with the drug quinine.
In addition to producing digestive enzymes, the pancreas produces hormones that regulate
a. blood glucose levels. b. HCl production by the stomach. c. blood calcium levels. d. bicarbonate secretion into the small intestine. e. pH of the blood.
In mammals, X chromosome inactivation
results in
a. a total inactivation of both female X chromosomes. b. only the inactivation of the paternal X chromosome in females. c. only the inactivation of the maternal X chromosome in females d. the inactivation of either the paternal X from the father or the maternal X in females. e. the inactivation of the maternal X chromosome in males
Which of these cell types can be described as muscle cells that contract rapidly, are rich in glycogen deposits, and depend on anaerobic respiration to produce ATP?
A) slow-twitch cells B) fast-twitch cells C) myoglobin D) hemoglobin