When was the first documented case of HIV in the United States?

A. 1959
B. 1924
C. 1969
D. 1884
E. 1982


Answer: C

Biology & Microbiology

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In a resting person every minute, 20% of the blood enters the ____

a. lungs b. liver c. brain d. kidney e. skeletal muscle

Biology & Microbiology

What is the most outstanding characteristic of prokaryotic cells?

a. Prokaryotes have an elaborate system of internal membranes. b. Prokaryotic cells do not have a cell wall. c. Prokaryotic cells contain energy-collecting pigments. d. Prokaryotic cells do not have a nuclear membrane. e. Prokaryotic cells possess a variety of organelles.

Biology & Microbiology

An immune system cell called the plasma cell produces thousands of antibodies (a type of protein) per second for release into the body. What type of intracellular structure would you expect to be very prominent within the cell?

A) the smooth endoplasmic reticulum B) the rough endoplasmic reticulum C) peroxisome D) microtubules

Biology & Microbiology

By showing your colleague that the conclusions of your analysis regarding the optimal pricing strategy for the firm would be the same under a variety of different assumptions regarding the price response of competitors is an example of:

A. direct proof. B. selection bias. C. degree of support. D. robustness.

Biology & Microbiology