The tough outer covering of the eye is referred to as the

A. pupil.
B. retina.
C. sclera.
D. fovea.
E. iris.


C. sclera.

Biology & Microbiology

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We maintain a fairly constant body temperature despite exposures to different seasons or external temperatures. This is achieved through our capacity to

A. adapt to changing environments. B. regulate body temperature. C. maintain homeostasis. D. All of these choices are correct. E. None of these choices are correct.

Biology & Microbiology

The term used to describe bacteria that have a spherical shape is

A. vibrio. B. bacillus. C. coccobacillus. D. coccus.

Biology & Microbiology

Refer to the accompanying figure. The function of the structure labeled as 3 is to:

a. secrete an alkaline fluid that neutralizes the acids of the vagina.

b. produce a nutritive fluid for the sperm. c. provide a place for maturation and storage of sperm. d. secrete mucus that lubricates the penis. e. maintain sperm at a low body temperature

Biology & Microbiology

Who won the Nobel Prize for the discovery of the structure of DNA?

a) Sir Isaac Newton b) Charles Darwin c) Watson and Crick d) Gregor Mendel

Biology & Microbiology