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
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The egg is fertilized at the secondary oocyte stage
Indicate whether the statement is true or false.
____ is the study of body plans and structures
among groups of organisms. a. Embryology b. Molecular archeology c. Evolution d. Comparative morphology e. Composition
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.
The causative agent of acne is
A. Staphylococcus aureus B. Micrococcus luteus C. Propionibacterium acnes D. Streptococcus epidermidis E. Corynebacterium diphtheriae