4.2 Metabolism

Question 1

ATP Cycle

Answer 1

Cycle that adds and removes phosphate groups by using and added energy, creating ATP and ADP

Question 2

Definitions for:
Metabolism, Anabolic, Catabolic, Exergonic, Endergonic, Hydrolysis, synthesis,

Answer 2

Metabolism- all chemical reactions that happen inside of life
Anabolic- makes smaller molecules into larger ones
Catabolic- breaks larger molecules into smaller ones
Exergonic- reaction that releases energy
Endergonic- reaction that requires an input of energy
Hydrolysis- breaks molecules apart
synthesis- bonds molecules

Question 3

What a graph of an exergonic and endergonic reaction look like in terms of energy of reactants and products

Answer 3

Exergonic- graph starts flat halfway up the x-axis then goes up and hits it’s vertex then drops due to energy being gained then released during the reaction
Endergonic- graph starts low then increasing to a vertex then drops slightly due to energy being added for the reaction then leveling out

Question 4

How all of the vocab terms above are related to each other. I.e. is an anabolic reaction exergonic or endergonic?

Answer 4

Anabolic is an endergonic reaction and catabolic is an exergonic reaction

Question 5

Give an example of an exergonic reaction being linked with an endergonic reaction and why they must occur in that order

Answer 5

The energy released in an exergonic reaction is the energy the endergonic reaction needs to occur.

Question 6

Which parts of the ATP cycle correlated with the vocab terms above

Answer 6

Removing a phosphate group is a catabolic exergonic reaction and adding a phosphate group is an anabolic endergonic reaction