Which of the following is not true of cholesterol?
a. It is a steroid lipid.
b. It helps stabilize the cell membrane.
c. It contains only two fatty acids.
d. It is the starting point for making the hormone estrogen.
c. It contains only two fatty acids.
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Human somatic cells contain only one pair of
A. chromosomes. B. autosomes. C. homologous chromosomes. D. sex chromosomes.
Which are plasma proteins? Choose all that apply.
A. Albumin B. Gamma globulin C. Hemoglobin D. Fibrinogen E. Glucose
Which of the following statements concerning peptide hormones is incorrect?
a. Peptides are synthesized by the endoplasmic reticulum-Golgi complex system. b. Peptides circulate largely bound to plasma proteins. c. Peptides bind to surface receptors of their target cells. d. Peptides exert their effect largely by means of second-messenger systems. e. Peptides are released by exocytosis upon appropriate stimulation.
Which of the following organs is retroperitoneal?
A. Duodenum B. Pancreas C. Descending colon D. Ascending colon E. All of the choices are correct.