What does the receptor protein do? stops things from entering into cell

helps cell self destruct when necessary

Receives chemical signals from the brain.

helps the flow of blood

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

The term facultative anaerobe refers to an organism that

An organism's reproductive strategy includes all of the following except a. the number of offspring produced. b. the amount of energy expended in producing offspring. c. the length of time parental care is given d. the number of alleles an organism passes on.