12

Question 1

Metabolic pathway:

Answer 1

A series of reaction occurring in a cell

Question 2

Anabolic pathway
i. Definition:
ii. Energetics:
iii. Example:

Answer 2

Synthesis pathways that build more complex molecules from simpler molecules,
requires energy input
Photosynthesis, building starch

Question 3

Catabolic pathway
i. Definition:
ii. Energetics:
iii. Example:

Answer 3

Breakdown pathways that convert complex molecules to simpler molecules, releases energy
cellular respiration, breakdown of starch into sugars

Question 4

Energy management molecules in metabolic reactions
i. Role of molecules in metabolism:

Answer 4

Temporarily store energy released by catabolic pathway reactions and provide energy to anabolic pathway reactions

Question 5

________
● ATP → ADP as part of a coupled reaction
● NADH → NAD
+ as part of a coupled reaction
● NADPH -→ NADP
+ as part of a coupled reaction
● Glucose + O2 → CO2 + H2O in a series of reactions

Answer 5

Energetically Favorable

Question 6

________
● ADP → ATP as part of a coupled reaction
● NAD
+ → NADH as part of a coupled reaction
● NADP
+ → NADPH as part of a coupled reaction
● CO2 + H2O → Glucose + O2
in a series of reactions

Answer 6

Energetically Unfavorable

Question 7

If a reaction is energetically unfavorable (has a positive ΔG) in a cell, the cell will be
able / unable to produce the products of that reaction unless the
reaction is coupled to another reaction that is ______.

Answer 7

Unable, energetically favorable

Question 8

If the main reaction is energetically unfavorable,
a. The products have less / more energy than the reactants because energy is released / absorbed during the main reaction.
b. Role of the coupled reaction: provides energy / absorbs energy during the
reaction.

Answer 8

More energy, absorbed, absorbs energy

Question 9

If the main reaction is energetically favorable,
a. The products have less / more energy than the reactants because energy is released / absorbed during the main reaction.
b. Role of the coupled reaction: provides energy / absorbs energy during the
reaction.

Answer 9

Less, released, absorbs energy