Unit 13

Question 1

Glycogen

Answer 1

Form of polymeric glucose storage, able to be broken down quickly, stored mainly in liver and muscle tissues

Question 2

Formation of sugar nucleotide

Answer 2

Catalyzes rxn between sugar phosphate and NTP to make pyrophosphate and NDP-sugar (sugar nucleotide), NDP-sugar pyrophosphate

Question 3

Glycogen synthase

Answer 3

Catalyzes elongation of glycogen chain, UDP-glucose attaches to nonreducing end of glycogen chain making UDP and elongation glycogen

Question 4

Importance of glycogen branched structure

Answer 4

Increases number of non reducing ends where glycogen phosphorylase and glycogen synthase can access, makes glycogen more soluble

Question 5

Rxn catalyzed by kinase

Answer 5

Substrate + atp -> substrate-p + adp

Question 6

Side proteins involved in kinase rxn

Answer 6

Tyr, Thr, Ser, His

Question 7

Rxn catalyzed by phosphatase

Answer 7

Substrate-p + water -> substrate-OH + PiH