Which of the following is/are considered (a) current selective pressure(s)?

A. Technology (including tools and computers)

B. Modern medicine

C. Travel

D. Culture

E. None of the above (A-D)

F. Some of the above (A-


E. None of the above (A-D) 

Biology & Microbiology

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You’ve heard the phrase, “Feed a cold, starve a fever,” your whole life, and you’ve always considered it dubious advice at best; after all, how are you supposed to recover from any infection if you’re undernourished? After reading this module, however, you realize that one of your organs may be following a portion of this folk remedy despite your opinion. Which statement is true?

a. In response to a cold, the capillaries surrounding the stomach constrict, reducing hunger. b. In response to a cold, the pancreas produces less insulin, causing blood sugar levels to spike immediately c. In response to a fever, the liver stops releasing iron into the blood, starving certain bacteria. d. In response to a fever, the small intestine becomes more permeable to large protein molecules.

Biology & Microbiology

The water vascular system is not involved with: a. gas exchange

b. excretion. c. locomotion. d. sensing of light.

Biology & Microbiology

The chance that two people have three repeat sequences at location A is 1 in 500. The chance that two people have four repeat sequences at location B is 1 in 800. What is the probability that two people have the same number of repeats in both location A and location B?

A.) 1 in 5,000 B.) 1 in 13,000 C.) 1 in 40,000 D.) 1 in 5,000,000

Biology & Microbiology

Which of the following is NOT part of the active transport process?

A) Plasma membrane B) Transporter proteins C) ATP D) Cell wall E) None of the above

Biology & Microbiology