Quiz 6: Metabolism and Energy

Metabolic pathways do not occur naturally, yet rather are facilitated using which of the following?

• Sugars

• Organelles

• Enzymes

• Cells

The amount of energy in our universe rises and falls based on reactions.

• True

• False

Which of the following is not an example of an energy transformation?

• Turning on a light switch

• Solar panels at work

• Formation of static electricity

• Photosynthesis

A mushroom decomposes a tree stump to provide itself with the necessary nutrients for its growth. This is an example of:

• anabolism

• catabolism

• anabolism and catabolism

• neither anabolism nor catabolism

Biological systems are open systems

• True

• False

Enzymes generally are…

• carbohydrates

• proteins

• lipids

• nucleic acids

Which of the following demonstrates energy coupling within organisms?

• Sodium-Potassium pump

• Calcium-sodium ionization

• ATP + H2O > ADP

• Pi + ADP > ATP

Which of the following is the best way to judge the relative activation energies between two given chemical reactions?

• Compare the ∆G values between the two reactions

• Compare their reaction rates

• Compare their ideal environmental conditions

• Compare the spontaneity between the two reactions

The terms “anabolic” and “catabolic” refer to whether a series of reactions requires or produces:

• Glucose

• Energy

• CO2

• O2

Spontaneous reactions are labeled such as they occur quickly.

• True

• False