An important by-product of photosynthesis is:

A) protein. B) water. C) starch. D) glucose. E) oxygen.


Answer: E

Biology & Microbiology

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Monod's group found that that appearance of ?-galactosidase correlated with that of galactoside permease. This ultimately led his group to the conclusion that:

A. constitutive expression involved two genes. B. ?-galactosidase production is contingent on the presence of galactosidase. C. the expression of ?-galactosidase and permease is under the control of another gene. D. a mutation in the ?-galactosidase gene would decrease expression of a permease gene. E. a mutation in the regulator gene would decrease expression of galactosidase and permease.

Biology & Microbiology

Halophilic Archaea are the only inhabitants of highly saline environments

Indicate whether the statement is true or false.

Biology & Microbiology

Following cleavage of the zygote, which of the following is the first to occur?

a. blastula b. gastrula c. neural crest d. morula e. primitive streak

Biology & Microbiology

In an epistatic interaction, the genes must be located on the same chromosome

Indicate whether the statement is true or false

Biology & Microbiology