. “Seasonal,” “daily,” and “monthly” all describe what
type of reproductive isolating mechanism?
a. behavioral
b. temporal
c. mechanical
d. gamete
e. ecological
Answer: b
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Which medium can be described as containing crystal violet dye to inhibit the growth of gram-positive bacteria and fungi and allows many types of gram-negative bacilli to grow?
a. Thayer-Martin agar b. MacConkey agar c. PEA d. Hektoen enteric agar
The structure indicated by the letter "B" above
represents a. actin. b. myofibril. c. myosin. d. sarcoplasmic reticulum. e. muscle fiber
If during the Gram stain procedure, the bacterial cells were viewed immediately after crystal violet was applied, gram-positive cells would be purple but gram-negative cells would be colorless.
Answer the following statement true (T) or false (F)
Symptoms of secondary syphilis include
a. generalized skin rash. b. lesions. c. fatal cardiovascular infections. d. both a and c.