Suppose a scientific team is trying to recreate the energy-producing reactions that occur in the Sun. What would they need for the experiments? hydrogen atoms, heat, and pressure
hydrogen atoms, helium atoms, heat, pressure, and energy
helium atoms and energy
helium atoms and hydrogen atoms

Which class of organic compounds makes up the channels and pumps that move materials from one side of the cell membrane to the other? a.) carbohydrates b.) lipids c.) proteins d.) nucleic acids

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

Why do we perceive objects as retaining their brightness under different lighting levels?