Topic 3.4 Cell Energy

Multiple Choice

Living things are

• Exergonic because they release more energy than they use

• Exergonic because they use more energy than they release

• Endergonic because they use more energy than they release

• Endergonic because they release more energy than they use

Multiple Choice

What is the 2nd law of thermodynamics?

• During transfer of energy, some is lost in a form that is unusable, such as heat energy.

• Kinetic energy is efficiently converted into potential energy.

• Once energy is lost, it reaches equilibrium.

Multiple Choice

what does an enzyme do in a reaction?

• raise the △G

• lower activation energy

• lower the △G

• raise activation energy

Multiple Choice

Is ATP hydrolysis reversible?

• Yes

• No

Multiple Choice

The energy derived from exergonic ATP hydrolysis is used by the integral protein to pump 3 sodium ions out of the cell & 2 potassium ions into the cell is an example of...

• Feedback inhibition

• Energy coupling

• Cellular respiration

Multiple Choice

Which structures shown in the Figure make up the ADP molecule?

• A and B
• A, B and C
• A, B, C, and D
• C and D

Multiple Choice

What is the function of ATP in living things?

• provides usable energy for cells

• stores genetic information
• provides structure in the nucleus

Multiple Choice

What form of transport is used to run ATP synthase

• primary active transport

• secondary active transport

• diffusion

• osmosis