Which of the following is classified as a flatworm?

a. trematodes
b. polyps
c. medusa
d. rotifers


a. trematodes

Biology & Microbiology

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Transport across biological membranes is speeded by what class of biological molecules?

a. Carbohydrates b. Lipids c. Nucleic acids d. Proteins

Biology & Microbiology

Which of the following antibiotics is NOT bactericidal?

A) aminoglycosides B) cephalosporins C) polyenes D) rifampins E) penicillin

Biology & Microbiology

Receptors on the surface of pathogens that are made of glycoproteins and lipoproteins are called

a. capsules. b. slime layers. c. adhesins. d. adhesives.

Biology & Microbiology

What is the likely explanation for the observation that during mass extinctions the size of a taxon's range is no longer positively correlated with its chance of survival?

What will be an ideal response?

Biology & Microbiology