Membranes with unsaturated fatty acids in their components are more flexible and fluid because: a. unsaturated fatty acids pack closely together to form ordered arrays. b. unsaturated fatty acids bend at the double bond preventing close packing. c. saturated fatty acids have a "kink" that produces more fluid aggregates. d. unsaturated fatty acids have cis double bonds that prevent formation of the "kink." e. all of the above are correct.

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls

The lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages. the average lake temperature is between 10∘c and 21∘c. consider the physical requirements for growth and multiplication that would allow fecal coliforms to “blossom” in the lake of the ozarks. which of the following would accurately describe these organisms? check all that apply. psychrophiles facultative halophiles extremophiles mesophiles hyperthermophiles

Which factors changed throughout the mice experiment