To which of the following superkingdoms do diatoms belong?
A. Amoebozoa
B. Archaeplastida
C. Stramenopila
D. Opisthokonta
E. Excavata
C
Biology & Microbiology
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Antigens that depend on the function of T-helper cells are called ________ antigens.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which structure is large enough to be seen under a light microscope?
a. small molecule b. protein c. virus d. chloroplast e. complex carbohydrate
Biology & Microbiology
The lancelet looks like a fish but is considered an invertebrate because it:
a. lacks lungs. b. lacks a nerve cord. c. lacks a backbone. d. both b and c
Biology & Microbiology
Giardiasis involves
A. vector transmission. B. symptoms of abdominal pain, flatulence, and diarrhea. C. a protozoan that does not form cysts. D. infection of the large intestine. E. All of the choices are correct.
Biology & Microbiology