10. What are mating systems? A. threatening behaviors that animals use to
gain control over other animals
B. behavior patterns that are related to how
animals reproduce
C. chemicals released by one animal that
affect the behavior of another animal of
the same species
D. behaviors related to the movement of
animals from one place to another and
back again

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

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

Explain the significance of meiosis in sexual reproduction