Which of the three types of viruses shown in the figure above would you expect to include glycoproteins as part of their overall structure?
A) I only
B) II only
C) III only
D) I and II only
Answer: D) I and II only
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Which of the following statements about gastrin is false?
A. Gastrin secretion is initiated in response to the sight or smell of food. B. A low pH in the stomach inhibits the secretion of gastrin. C. Gastrin stimulates the production of HCl. D. Gastrin is produced by the stomach, absorbed within the small intestine, and recirculated back to the stomach. E. None of these statements about gastrin is false.
Each of the following is a common shape of prokaryote except
a. vibrios. b. spirilla. c. cilia. d. bacilli. e. cocci.
Which of the following statements is false?
a. Enzymes catalyze reversible reactions in either direction. b. Enzymes are highly specific. c. Most enzymes are carbohydrate molecules. d. Enzymes do not allow some reactions to occur that would never occur without them. e. Enzymes may be temporarily modified during their involvement with the substrate
Which of the following caused massive declines in U.S. commercial fish populations?
A) recreational anglers B) freak weather events in the 1980s C) huge factory trawlers D) foreign commercial fisherman