Biology Quiz

What are cellular respiration and photosynthesis examples of?

• Physical processes that involve the transfer of energy only

• Biological processes that involve the transfer of both matter and energy

• Chemical processes that only involve the transfer of matter

• Geological processes that recycle matter within the ecosystem

In photosynthesis, what is light energy converted into?

• Heat energy

• Mechanical energy

• Chemical energy (glucose)

• Electrical energy

What happens to the chemical energy in cellular respiration?

• It is stored.

• It is converted into light energy.

• It is used up.

• It is transformed into mechanical energy.

How are cellular respiration and photosynthesis related?

• They are independent processes.

• They are sequential reactions.

• They are reciprocal reactions.

• They are identical reactions.

What is metabolism?

• The breakdown of large molecules into smaller pieces

• The sum of all the processes within a cell

• The creation of energy from sunlight

• The process of muscle contraction

What are catabolic reactions?

• Reactions that create larger molecules from smaller subunits

• Reactions that break down large molecules into smaller pieces

• Reactions that consume energy

• Reactions that produce large amounts of energy

What are anabolic reactions?

• Reactions that break down large molecules into smaller pieces

• Reactions that create larger molecules from smaller subunits

• Reactions that require no energy

• Reactions that only occur in the liver

What is the role of enzymes in metabolic reactions according to the information provided?

• Enzymes increase the activation energy required for reactions.

• Enzymes act as protein catalysts to lower activation energy and start reactions more easily.

• Enzymes prevent reactions from occurring within a cell.

• Enzymes are not necessary for reactions to occur.

What is activation energy?

• The energy released during a reaction.

• The energy level of the products of a reaction.

• The energy required for a reaction to occur.

• The energy that enzymes use to function.

Refer to the graph in the image. What does the graph illustrate about the effect of enzymes on a reaction?

• Enzymes increase the overall energy released during a reaction.

• Enzymes change the products of the reaction.

• Enzymes reduce the activation energy required for a reaction.

• Enzymes have no effect on the activation energy of a reaction.