Cell Metabolism & Energy Quiz

What is the main component of intracellular fluid (ICF)?

• Blood plasma

• Cytosol

• Interstitial fluid

• Transcellular fluid

Which of the following is a characteristic of extracellular fluid (ECF)?

• Regulated by homeostasis

• Is found only in the blood

• Contains only sodium ions

• Is always isotonic

What process describes the movement of water through a selectively permeable membrane?

• Diffusion

• Active transport

• Osmosis

• Facilitated diffusion

What type of transport does NOT require energy?

• Active transport

• Facilitated diffusion

• Endocytosis

• Exocytosis

What is the term for the pressure exerted by water inside plant cells?

• Turgor pressure

• Plasmolysis

• Hydrostatic pressure

• Osmotic pressure

Which type of reaction in metabolism requires energy input?

• Catabolic reactions

• Endergonic reactions

• Exergonic reactions

• Anabolic reactions

What is the main energy carrier in cells?

• ADP

• NADH

• ATP

• FADH2

What is the minimum amount of energy required to start a reaction called?

• Catalytic energy

• Potential energy

• Activation energy

• Thermal energy

Which of the following describes the role of enzymes in chemical reactions?

• Slow down reactions

• Act as catalysts

• Change the products of reactions

• Increase activation energy

What type of inhibition occurs when an inhibitor binds to an enzyme at a site other than the active site?

• Competitive inhibition

• Feedback inhibition

• Noncompetitive inhibition

• Irreversible inhibition