A potent neurotoxin that causes paralytic shellfish poisoning in coastal temperate North America is produced by ________.

A. diatoms
B. green algae
C. dinoflagellates
D. red algae


Answer: C

Biology & Microbiology

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of a(n)____.

a. organism b. community c. population d. ecosystem

e. biosphere

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Activated Ras ____

a. activates MAP kinase (MAP K) b. opens a calcium channel c. triggers gene transcription d. binds DNA e. triggers the secretion of growth factors

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Some RIPs are not as toxic as ricin. What is the main difference between toxic and non-toxic RIPs?

What will be an ideal response?

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__________ are jawless fishes with a backbone. Fill in the blank(s) with the appropriate word(s)

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