If there is more sodium inside a cell that outside, which process could the cell use to take in more sodium? a. active transport b. diffusion c. osmosis d. mitosis e. none of the above

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

Which of th following best describes how genes produce traits in an organism?