1.Which of the following statements is true for all cells?
A) They use solar energy
B) They use photosynthesis
C) They use chemical energy
D) They use chemosynthesis
2.Which phrase best describes the function of the ATP molecule?
A) Stores energy
B) Carries energy
C) Absorbs energy
D) Converts energy
3.Where does the chemical energy to produce ATP come from?
A) The conversion of ATP to ADP
B) The use of chemicals from the environment to build sugars
C) The addition of a phosphate group to ATP
D) The breakdown of carbon-based molecules into smaller molecules
4.Energy is released from an ATP molecule for cellular processes when it
A) has a phosphate group removed.
B) stores an extra phosphate group.
C) converts a phosphate group to ADP.
D) produces a sugar molecule.
5.Which of the following is the source of energy used in chemosynthesis?
B) Heat from hydrothermal vents
C) Chemical compounds
D) Amino acids
6.Which of the following statements best describes the process of photosynthesis?
A) Plants use oxygen to make simple sugars.
B) Chlorophyll builds sugars in the thylakoid membrane.
C) Light breaks down water molecules and releases carbon dioxide.
D) Chloroplasts absorb sunlight and store chemical energy.
7.What is the term for an organism that makes its own source of chemical energy?
8.The main light-absorbing molecules found in plant leaves are called
9.The function of the light-dependent reactions is to
A) build sugars.
B) capture and transfer energy.
C) release carbon dioxide.
D) form water molecules.
10.The light-independent reactions of photosynthesis need
A) carbon dioxide.
11.Which of the following takes place in the light-dependent reactions of photosynthesis?
A) Sugars are made.
B) Energy is captured.
C) Chlorophyll is pumped.
D) is formed.
12.Where do the hydrogen ions for the photosystems of the light-dependent reactions come from?
13.Which phrase best describes the electron transport chain in photosynthesis?
A) A chain of photosynthetic proteins located in the stroma
B) A collection of enzymes used to make ADP
C) A series of proteins located in the thylakoid membrane
D) A group of enzymes that carries energy to the Calvin cycle
14.In the light-independent reactions of photosynthesis,
A) enters the Calvin cycle and sugars are made.
B) is broken down and oxygen is released.
C) NADPH is produced and transferred to photosystem I.
D) electrons are energized and used to pump ions.
15.What is the relationship between the photosystems and the Calvin cycle?
A) The photosystems produce ATP synthase for the Calvin cycle.
B) The photosystems transfer hydrogen ions and carbon dioxide to the Calvin cycle.
C) The photosystems transfer energy to the Calvin cycle through ATP and NADPH.
D) The photosystems build sugars with the carbon dioxide produced by the Calvin cycle.
16.Which of the following types of organisms uses cellular respiration for their cellular energy needs?
B) Plants only
C) Animals only
17.Which process breaks down sugars to make ATP when oxygen is present?
A) Anaerobic respiration
B) Cellular respiration
18.The part of cellular respiration in which glucose is broken down is called
B) aerobic respiration.
C) electron transport.
19.Two products of the Krebs cycle are
A) and .
B) ATP and .
C) ATP and .
D) ADP and .
20.What provides the electron transport chain in cellular respiration with the energy it needs to function?
A) ATP synthase
D) Krebs cycle
21.Which of the following statements best describes cellular respiration?
A) Sunlight and carbon dioxide are used to make ATP.
B) ATP and oxygen are used to make sugars and starches.
C) Carbon-based molecules from food and oxygen are used to make ATP.
D) ATP and carbon dioxide are used to make ADP and water.
22.Which of the following are end products of glycolysis?
A) Two three-carbon molecules, ATP, and
B) Carbon dioxide, water, and ATP
C) , oxygen, and two ATP molecules
D) Pyruvate, NADH, and ATP
23.What is the main function of the Krebs cycle?
A) Breaking down pyruvate molecules to form molecules of NADH and oxygen
B) Forming citric acid to make NADH, water, and
C) Producing molecules that carry high-energy electrons to the electron transport chain
D) Bonding coenzyme A to pyruvate
24.In the electron transport chain, energy from the Krebs cycle is used to pump hydrogen ions
A) across the inner mitochondrial membrane.
B) through the ATP synthase enzyme in the mitochondrial matrix.
C) along a concentration gradient in the thylakoid.
D) along the thylakoid membrane.
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