Once used by an organism, carbon- and nitrogen-based nutrients are unavailable for other organisms

Indicate whether the statement is true or false


FALSE

Biology & Microbiology

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Animal cells commonly have polysaccharides attached to ____ in their surface membranes

a. proteins b. nucleic acids c. lipids d. both nucleic acids and lipids e. both proteins and lipids

Biology & Microbiology

If mRNAs could be ligated and replicated within plasmids, what enzyme commonly used in recombinant DNA technology would no longer be needed?

A) restriction enzymes B) DNA polymerase C) RNA polymerase D) reverse transcriptase E) Taq polymerase

Biology & Microbiology

This hormone does not play a role in the female reproductive system.

A. estradiol B. progesterone C. gonadotropin-releasing hormone D. follicle-stimulating and luteinizing hormones E. insulin

Biology & Microbiology

When populations become geographically separated for a period and then come back into contact, they __________ become different species.

a) always b) sometimes c) never

Biology & Microbiology