Chapter 4 Test A

What molecule carries chemical energy that cells use for their functions a. ADP b. ATP c. NAD+ d. NADP+

b. ATP

Which of the following directly provides the energy needed for cell functions a. a phosphate group is removed from ATP b. ADP loses a phosphate group c. electrons are passed to proteins d. oxygen picks up electrons

a. a phosphate group is removed from ATP

Which of the following molecules found in the food we eat is most commonly broken down to make ATP? a. carbohydrates b. lipids c. proteins d. vitamins

a. carbohydrates

Which of the following is a product of the Krebs cycle a. carbon dioxide b. oxygen c. lactic acid d. glucose

a. carbon dioxide

Which process is best represented by the following chemical equation -> sugars+oxygen->carbon dioxide +water a. cellular respiration b. photosynthesis c. glycolysis d. fermentation

a. cellular respiration

Before cellular respiration, glucose must be broken down by the process of a. photosynthesis b. glycolysis c. electron transport d. fermentation

b. glycolysis

The part of cellular respiration that needs oxygen takes place inside the a. nucleus b. mitochondria c. thylakoid d. cytoplasm

b. mitochondria

Where in plant cells are the energy-absorbing molecules for photosynthesis located? a. stroma b. thylakoids c. ATP synthase d. mitochondria

b. thylakoids

Which of the following is a reactant in photosynthesis a. O2 b. C6H12O6 c. CO2 d. COOH

c. CO2

An electron transport chain that produces ATP is part of both cellular respiration and a. glycolysis b. fermentation c. photosynthesis d. the Krebs cycle

c. photosynthesis

What happens to the sugars that are made during photosynthesis a. they move directly into an electron transport chain b. they go back into the Calvin cycle c. they can be used for cellular respiration d. they make ATP by bonding together

c. they can be used for cellular respiration

In which process is lactic acid formed when there is not enough oxygen present for cellular respiration to take place? a. ATP synthase b. photosystem I c. glycolysis d. fermentation

d. fermentation

Chemosynthesis is a process through which some organisms use energy from chemicals in their environment to build sugars in the absence of a. ATP b. water c. glucose d. sunlight

d. sunlight