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