A goat eats by pulling a plant out of the ground. What does this best illustrate?
a. parasitism
b. predation
c. competition
d. commensalism
e. mutualism
b
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Conjugation is useful for determining relatedness between bacteria at the species level because it never occurs between organisms of different genera.
Answer the following statement true (T) or false (F)
Which one of the following is an example of osmosis?
A. The smell of freshly baked pie spreads throughout a house. B. Water enters a plant by passing through the root cell membranes. C. Food in the refrigerator starts to taste like onions because the onions in the vegetable bin have been stored unwrapped. D. Potassium ions enter a red blood cell through the action of a specific ion transport protein.
Histoplasmosis should be suspected in cases of fungal respiratory infections found in
A) the Mississippi and Ohio River valley regions. B) dog owners. C) HIV-AIDS patients. D) construction workers. E) cattle or dairy farm workers.
Which of the following are NOT phototrophic bacteria?
a. heliobacteria b. purple sulfur bacteria c. sulfur-oxidizing bacteria d. cyanobacteria