Which of the following is a type of essential nutrient?
A. Organic vitamins
B. Essential amino acids
C. Minerals
D. All of the above are types of essential nutrients.
Answer: D
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A tissue sample is sent to the laboratory and microscopically examined for the presence of amebae. To differentiate between the host cells and the organism, _______ stain is used to allow the organisms to appear bright pink with a green-blue background
a. Trichrome b. Giemsa c. Wright's d. periodic acid–Schiff (PAS)
Pollen comes from the
A. carpel. B. petal. C. stigma. D. anther. E. style.
Anaerobic metabolism produces
a. large amounts of energy. b. small amounts of energy. c. the same amount of energy as aerobic metabolism. d. no energy.
___________ is a body shape, color pattern, or behavior that allows an individual to blend into its surrounding and avoid detection.
Fill in the blank(s) with the appropriate word(s).