Cardiovascular exercise utilizes large muscle groups does not burn many calories increases your flexibility greatly increases muscle strength

Which organelle releases chemicals that break down large food particles into smaller ones?

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.

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis. b. the primary role of microbes on the planet involves causing disease in animals and humans. c. microbes produce vitamins in the intestines. d. microbes play a role in breaking down waste and decomposing dead organisms.