Which of the following is NOT typically a form of animal communication?

a) posture
b) increased heart rate and metabolic rate
c) vocalizing
d) release of airborne hormones
e) baring one's teeth


Ans: b) increased heart rate and metabolic rate

Biology & Microbiology

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A person with neither anti-A nor anti-B antibodies in circulation has which of blood type?

A) A B) B C) AB D) O

Biology & Microbiology

Experiments like those first performed by Miller and Urey demonstrated that

a. amino acids and other organic compounds could form in conditions that mimicked the earth's early atmosphere. b. a lipid-protein film will eventually be formed by thermal convection. c. DNA forms readily and reproduces itself. d. complete, functioning prokaryotic cells are formed after approximately three months. e. meteorites contained organic compounds.

Biology & Microbiology

The chances of surviving sudden cardiac arrest increases by ___ percent when the affected person receives

cardiopulmonary resuscitation (CPR) within ___ minutes after the event.

a. 100; a few b. 50; a few c. 50; 10 d. 100; 10 e. 50; 20

Biology & Microbiology

Evolutionary biology is the study of:

a. the modifications in organisms over time. b. descent with modification. c. the origin, maintenance, and diversity of life on Earth. d. All of the above.

Biology & Microbiology