Cells change the composition of their plasma membranes as a response to changing environments. In general, colder temperatures reduce the fluidity of the membrane, so cells will produce different molecules to bring the fluidity back to normal

How would the cell change the membrane in response to colder temperatures?
A. increase the amount of saturated triacylglycerols
B. increase the amount of unsaturated fatty acids
C. increase the length of the fatty acid side chains in the phospholipids


Answer B

Biology & Microbiology

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Biology & Microbiology

Two researchers suggested in the 1960s that

____ may have been the first informational molecule.

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Biology & Microbiology

Animals most likely evolved most recently from ____.

A. colonial protists B. fungi C. amoebozoans D. algae E. cyanobacteria

Biology & Microbiology

What are groups of cells that perform the same function called?

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Biology & Microbiology