In aerobic respiration, what is the direct source of energy that ATP synthase uses to synthesize ATP?

A.

an electron gradient

B.

an exergonic chemical reaction

C.

a water gradient

D.

a proton gradient

10. Which of the following is true regarding extinction?

Bactrian camels, dromedaries, llamas, and alpacas are all members of the same taxonomic family, Camelidae. Members of this family all have two toes, no hooves, true canine teeth, and a split upper lip.

Which of the following is true about the flow of energy within ecosystems? A. Energy flows both ways between living systems and the physical environment. OB. Energy flows from the physical environment into living systems only. C.

Why do some cells appear in one type of cell but not in another?

A group of deer are part of the same species and are living in the same area. How would we refer to this group of deer? Population, community, or ecosystem?

What part of the femur articulates with the tibia to form the knee joint?

What causes the "heat island" effect? a. heat produced from a large number of people b. the materials used in building cities retain heat c. the large amount of reflected light from glass windows d. all of the above

Why are two photosystems necessary?

Hamsterul meu nu se mai misca si numai e activ ca inainte Va rog ajutati-ma

What is the concentration in (g/L) of an 80% sodium hydroxide (NaOH) solution?