Saxitoxin is produced by __________.

A) fungi
B) bacteria
C) dinoflagellates
D) helminths
E) protozoa


Ans: C) dinoflagellates

Biology & Microbiology

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At what point in development is a human embryo considered to be a fetus?

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Rabbits introduced to Australia overpopulated because in their new habitat ____

a. people rarely hunted them b. they had no natural diseases c. they had no natural predators d. their food supply was larger e. there were few herbivorous competitors

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If a population is in Hardy–Weinberg equilibrium and p 5 .6,

a. q 5 .5 b. q 5 .4 c. q 5 .3 d. q 5 .16

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Which of the following is found in plant cells but not animal cells?

A. central vacuole B. chromosomes C. nucleus D. lysosomes E. Golgi complex

Biology & Microbiology