Which of the following are roles that ions play in living things? Maintaining an acid/base balance in an organism

maintain the balance of water in cells

regulate what substances cross cell membranes

help regulate your heartbeat

Lactic acid and energy are produced in muscle cells during choose 1 aerobic respiration cellular respiration anaerobic respiration cellular division

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

What factors contribute to the effect an environmental toxin has on the human body?