All protists possess
a. multiple, circular chromosomes.
b. mitochondria.
c. microtubules and microfilaments.
d. chloroplasts.
e. cell walls.
C
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Which one of the following controls drives, instincts, and emotion?
A. thalamus B. cerebrum C. limbic system D. cerebellum
Which of the following is not an extraembryonic membrane?
a. yolk sac b. somite c. chorion d. amnion e. allantois
The ________ is involved in Page 62the movement of a prokaryotic cell.
a. fimbriae b. capsule c. nucleoid d. flagella
Choose the answer that fills in the blanks of this sentence in the correct order. Most protozoa have a motile, feeding stage known as a(n) _____ which, in some protozoa, alternates with a resting state known as a(n) _____.
A) Cyst; trophozoite B) Trophozoite; spore C) Trophozoite; cyst D) Spore; trophozoite