Which soil type has the most minerals?

a. gravel
b. sand
c. clay
d. humus
e. silt


Answer: c

Biology & Microbiology

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Acceptable specimens for the detection of B. pertussis are:

a. throat swabs. b. sputum. c. nasopharyngeal aspirates. d. anterior nose swabs.

Biology & Microbiology

Photosystem II produces

A. water and NADPH. B. oxygen. C. both oxygen and high-energy electrons. D. water. E. high-energy electrons.

Biology & Microbiology

Male sticklebacks that see a model of a fish with a red belly will attack it, thinking it is a breeding male. They do not attack model fish without a red belly. This is an example of

A. learned behavior. B. imprinting. C. fixed action pattern. D. taxis. E. reflex.

Biology & Microbiology

Based on the size of the sagittal crests in these figures, which animal has the most powerful bite?

What will be an ideal response?

Biology & Microbiology