Which of the following can be inferred from the presence of coliforms in water?

a. fecal contamination
b. poor water quality
c. presence of toxins
d. both fecal contamination and poor water quality


Answer: D

Biology & Microbiology

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The egg is fertilized at the secondary oocyte stage

Indicate whether the statement is true or false.

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____ is the study of body plans and structures

among groups of organisms. a. Embryology b. Molecular archeology c. Evolution d. Comparative morphology e. Composition

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Which of the following statements concerning the heart is false?

a. It is an organ. b. It contains endothelium. c. It contains nerves

d. It is an organ system. e. Its muscles contain elongated fibers.

Biology & Microbiology

The causative agent of acne is

A. Staphylococcus aureus B. Micrococcus luteus C. Propionibacterium acnes D. Streptococcus epidermidis E. Corynebacterium diphtheriae

Biology & Microbiology