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

Biology & Microbiology

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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)

Biology & Microbiology

Pollen comes from the 

A. carpel. B. petal. C. stigma. D. anther. E. style.

Biology & Microbiology

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.

Biology & Microbiology

___________ 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).

Biology & Microbiology