What is the sum of all chemical reactions in the body called?

• Metabolism

• Photosynthesis

• Digestion

• Respiration

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In anabolism, smaller molecules are bound together to form larger ones. What is produced in the process?

• CO2

• H2O

• O2

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What do different types of cells conduct?

• Electricity

• Nutrients

• Signals

• Energy

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Label the following parts of a metabolic pathway?

a

b

c

Active site

Substrate Molecules

Enzyme- substrate complex

cofactor

Substrate Molecule

Product Molecule

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What is the function of some cofactors in relation to enzymes?

• Cofactors are only involved in the transport of enzymes.
• Cofactors enhance enzyme activity and stability, and may participate in the reaction.
• Cofactors are unnecessary for enzyme function and stability.
• Cofactors inhibit enzyme activity and reduce stability.

What process releases energy from glucose and other molecules via the loss of hydrogen atoms and their electrons?

• Glycolysis
• Fermentation
• Cellular respiration
• Photosynthesis

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In cells, what do enzymes lower to facilitate oxidation in reactions of cellular respiration?

• Activation energy
• pH level
• Temperature
• Reaction rate

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What do NADH and FADH2 carry to the Electron Transport Chain (ETC)?

• Oxygen and carbon dioxide

• Hydrogen and high-energy electrons

• Water and glucose

• ATP and ADP

Where is the Electron Transport Chain (ETC) located?

• In the cytoplasm

• In the inner membrane of mitochondria

• In the nucleus

• In the cell wall

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What is formed when oxygen acts as the final electron carrier?

• Oxygen acts as the final electron carrier in cellular respiration, leading to the formation of water (H2O) as a byproduct.

• Oxygen acts as the final electron carrier in cellular respiration, leading to the formation of carbon dioxide (CO2) as a byproduct.

• Oxygen acts as the final electron carrier in cellular respiration, leading to the formation of glucose (C6H12O6) as a byproduct.

• Oxygen acts as the final electron carrier in cellular respiration, leading to the formation of oxygen gas (O2) as a byproduct.

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