Energy & cellular metabolism

Question 1

What is reaction coupling?

Answer 1

This is where energy is released from one reaction is used to drive another reaction, often this energy comes from the ATP phosphate bond

Question 2

Define specificity

Answer 2

the binding site of the enzyme and the substrate have to be complementary in order for that binding and a reaction to occur

Question 3

Define competition

Answer 3

is where different ligands or substrates will compete with each other for the same enzyme binding site.

Question 4

Define Saturation

Answer 4

is the state where all enzymes are bound to a ligand or the enzymes are saturated with the ligand

Question 5

What are the 4 categories of enzymatic reactions?

Answer 5

1. Oxidation reduction reactions
2. hydrolysis dehydration reactions
3. Addition subtraction exchange reactions
4. Litigation reactions

Question 6

define catabolism:

Answer 6

the breakdown of larger biomolecules (energy is released from high energy bonds)

Question 7

define anabolism:

Answer 7

the creation of large biomolecules (transfer of energy into covalent bonds of macromolecules

Question 8

How do cells regulate metabolism?

Answer 8

1. Controlling enzyme concentration
2. Producing modulators that change reaction rates
3. using 2 different enzymes to catalyze reversible reactions
4. compartmentalizing enzymes within cellular organelles
5. maintain an optimum ratio of ATP to ADP