The first eukaryotic cells were ____

a. bacteria
b. archaea
c. protists
d. algae
e. fungi


ANSWER: c

Biology & Microbiology

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Muscle fatigue is a result of

1.accumulation of lactic acid. 2.exhaustion of available ATP. 3.reduction in lactic acid. 4.failure of calcium channels to open after prolonged use. 5.inactivity of muscles for prolonged periods of time.

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Three organs in the human body are involved in the production of vitamin D; they are the ________, ________, and ________

Fill in the blank(s) with correct word

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What was the subject of an essay that was one of the foundational concepts of natural selection?

What will be an ideal response?

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What type of fruit is a blackberry?

A. An aggregate of many drupes B. An aggregate of many indehiscent fruits C. An aggregate of many small berries D. A multiple of small berries E. A multiple of small pomes

Biology & Microbiology