Cells in the human eye send nerve impulses to the brain that cause the pupil to constrict. this is an example of a reaction to what kind of internal stimuli? a. chemicals b. light c. touch d. sound

What was photo 51 with rosalind franklin?

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this