Which is a monomer?

a. chitin
b. cellulose
c. amylose
d. sucrose
e. glucose


Answer: e

Biology & Microbiology

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The nutrition of some plants depends on a mutually beneficial association between a root and a fungus. The association is known as a _____

a. root nodule c. root hair b. mycorrhiza d. root hypha

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Sodium dodecyl sulfate (SDS) is a detergent commonly added to protein samples before gel electrophoresis. The purpose of the negatively charged SDS is to neutralize the charges and denature the protein to remove secondary structures

Thus, the proteins can be separated on a gel based solely on what parameter?

Biology & Microbiology

Which of the following does NOT represent a form of parental investment?

A. a spermatophore containing nutrients eaten by a female insect B. a male fish mouthbrooding eggs abandoned by a female C. a copulatory plug deposited in the reproductive tract of a female mouse D. a female bird incubating externally-laid eggs E. all of the above represent a form of parental investment

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The region of a gene encoding the 5'UTR (5' untranslated region) of an mRNA is not considered to be an exon.

a. true b. false

Biology & Microbiology