Parasitism is often a ____________ factor affecting populations.

A. density-independent
B. density-dependent
C. inverse density-dependent
D. cyclic
E. random


B. density-dependent

Biology & Microbiology

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When a person visits the doctor with a bacterial infection, one of the first lab tests on the patient will tell the doctor whether the bacteria are gram-negative or gram-positive. Why is this important information for a doctor to have before deciding on treatment?

What will be an ideal response?

Biology & Microbiology

The healthiest carbohydrates are

a. simple sugars. b. disaccharides. c. fruit sugars. d. "complex" carbohydrates e. cane sugars.

Biology & Microbiology

For translation to take place, which of the following does NOT need to be present?

A. ribosome B. DNA C. rRNA D. mRNA E. tRNA-amino acid complex

Biology & Microbiology

Organisms that are unicellular, colonial, filamentous, and photosynthetic would include the

A) fungi. B) protozoans. C) helminths. D) algae.

Biology & Microbiology