Is cellular respiration endothermic or exothermic?

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants. d- food molecules are broken down in the cells if living things.

Which material is commonly used as a culture medium for living cells

What are positive impacts of algae? how is it used?