General Biology Quiz: Energy Flow and Recycling

What is the definition of energy in living organisms?

• The capacity to store energy for future use

• The energy of motion

• The ability to do work or bring about a change

• The measure of randomness in a system

What does the first law of thermodynamics state?

• The universe moves in the direction of greater entropy

• Energy cannot be changed from one form to another without a loss of usable energy

• The measure of randomness in a system

• Energy cannot be created nor destroyed

What is the structure of adenosine triphosphate (ATP)?

• Nitrogen-containing base adenine, four-carbon sugar ribose, three phosphate groups

• Nitrogen-containing base adenine, five-carbon sugar ribose, three phosphate groups

• Nitrogen-containing base adenine, six-carbon sugar ribose, three phosphate groups

• Nitrogen-containing base adenine, five-carbon sugar ribose, two phosphate groups

Which mechanism of ATP synthesis utilizes the energy derived from the transfer of electrons in an electron transport system?

• Oxidative phosphorylation

• None of the above

• Substrate-level phosphorylation

• Photophosphorylation

What is the term used to indicate the relative amount of disorganization of a system?

• Entropy

• Potential Energy

• Kinetic Energy

• Thermal Energy

Which type of reaction starts with reactants that contain relatively little potential energy?

• Thermal reaction

• Endergonic reaction

• Chemical reaction

• Exergonic reaction

What is the law of conservation of energy?

• The measure of randomness in a system

• The universe moves in the direction of greater entropy

• Energy cannot be changed from one form to another without a loss of usable energy

• Energy cannot be created nor destroyed

Label the structure above properly.

• a. pentose sugar
  b. adenine
  c. triphosphate tail

• a. adenine
  b. triphosphate tail
  c. ribose sugar

• a. adenine
  b. ribose sugar
  c. triphosphate tail

• a. adenosine
  b. ribose sugar
  c. triphosphate tail