Enzyme Activity and Metabolic Pathways

What is the term for all of the chemical reactions in an organism?

• Metabolism

• Photosynthesis

• Homeostasis

• Diffusion

Which of the following best describes catabolism?

• A) Building larger molecules from smaller ones

• B) Breaking down larger molecules into smaller ones

• C) Storing energy in the bonds of ATP

• D) Releasing energy as heat

A series of chemical reactions in an organism is called a ________.

• Pathway

• Molecule

• Enzyme

• Substrate

Catabolic pathways are considered ________ because they release energy.

• Endergonic

• Exergonic

• Anabolic

• Catabolic

Cells store some of the energy released from catabolic pathways in the bonds of ________.

• ATP

• DNA

• Glucose

• Cholesterol

Which process uses energy to build larger molecules from precursor molecules?

• Catabolism

• Anabolism

What does anabolism involve?

• The breakdown of larger molecules into smaller products

• The synthesis of larger molecules from smaller products of catabolism

• The release of energy as heat

• The storage of energy in carbohydrates

Anabolic pathways are ________ because they require more energy than they release.

• endergonic

• exergonic

• catabolic

• spontaneous

The energy required for anabolic pathways usually comes from ATP molecules produced during ________.

• catabolism

• anabolism

• photosynthesis

• fermentation

According to Figure 5.1, which of the following is NOT a product of catabolism?

• ATP

• ADP

• Macromolecules

• Energy lost as heat