Which of the following is a shared characteristics of photophosphorylation and oxidative phosphorylation? A. both utilize a proton gradient established by an electron transport chain to power ATP synthetase
B. both consume oxygen and produce carbon dioxide
C. both involve substrate-level phosphorylation being the main route of ATP production
D. both produce metabolic water
E. Both use high-energy electron carriers to shuttle electrons within organelles of the cell
F. both can be performed by plant cells

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes