Defective receptor on a cell membrane have the least effect on? 1.homeostasis2.muscle activity3.nerve signals 4. diffusion

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis