The best light to grow the alga in is __________,

according to the figure.
a. blue-violet
b. blue-green
c. green-yellow
d. yellow-orange
e. orange-red


Answer: a

Biology & Microbiology

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Natural selection has favored the dark form of the peppered moth in areas subject to severe air pollution, perhaps because on darkened trees, moth-eating birds see them less easily. As pollution abated, the light forms increased in the population because 

A. light moths had lower fitness than dark moths. B. light moths were able to produce more offspring than dark moths. C. light moths were more genetically variable than dark moths. D. birds ate more light moths.

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For the lactose operon, lactose is a(n):

A. inducer. B. promoter. C. activator. D. repressor. E. operator.

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What is the main prerequisite for clearance at the G2 checkpoint?

a. cell has reached a sufficient size b. an adequate stockpile of nucleotides c. accurate and complete DNA replication d. proper attachment of mitotic spindle fibers to

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The citric acid cycle produces all of the following except ______.

a) ATP b) acetyl c) FADH2 d) CO2 e) NADH

Biology & Microbiology