Which process involves the transfer of heat from the surface of a body to a fluid that passes over the body's surface?

a. convection
b. evaporation
c. radiation
d. conduction


Ans: a. convection

Biology & Microbiology

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4. Structures that are shed in one piece include

(a) the cuticle of roundworms. (b) the exoskeleton of arthropods. (c) human hair. (d) all of the above.

Biology & Microbiology

The type of contraception that works because ovulation is prevented is:

a. rhythm method b. tubal ligation c. oral contraceptive pills d. the diaphragm e. the condom

Biology & Microbiology

Which one of the following is characteristic of an isotonic muscle contraction but not an isometric muscle contraction?

A) generates a force B) moves an object or part of the skeleton C) helps an individual maintain an upright position D) requires energy E) helps an individual maintain posture

Biology & Microbiology

Four of the following statements correctly describe lichens. Which statement is the exception?

A. They inhabit harsh environments. B. They contain a club fungus. C. They may have preceded the evolution of land plants. D. They may be a mutualism between an alga and a fungus. E. They can contain cyanobacteria.

Biology & Microbiology