Amino Acids and Proteins

Question 1

Amino acid that make serotonin

Answer 1

Tryptophan

Question 2

Amino acids that make catecholamines

Answer 2

Phenylalanine and tyrosine

Question 3

Competitive Inhibition

Answer 3

Vmax stays the same while Km increases

Question 4

Non-competitive inhibition

Answer 4

Vmax decreases while km remains the same

Question 5

Coorperative enzymes have…

Answer 5

Multiple subunits and multiple active sites

Have a sigmoidal curve

Question 6

Example of a coorperative enzyme

Answer 6

Phosphofructokinase 1 in glycolysis

Question 7

G-protein, enzyme, second messenger, protein kinase and examples for :
cAMP pathway

Answer 7

Gs
Adenyl cyclase
cAMP
protein kinase A
Epinephrine, glucagon

Question 8

G-protein, enzyme, second messenger, protein kinase and examples for :
PIP2

Answer 8

Gq
phospholipase C
DAG, IP3, Ca2+
Protein kinase C

Question 9

G-protein, enzyme, second messenger, protein kinase and examples for :
cGMP

Answer 9

no G-protein
Guanyl cyclase
cGMP
Protein kinase G
Nitric oxide

Question 10

G-protein, enzyme, second messenger, protein kinase and examples for :
Insulin

Answer 10

Ras
no enzyme
no second messenger
Tyrosine kinase receptor
Insulin

Question 11

G-proteins are important in the activation of?

Answer 11

Smooth muscle relaxation, it is activated by Nitrous oxide (NO)

Question 12

GLUT 4 in tissue membranes in upregulated through what mechanism?

Answer 12

Insulin binding to receptor tyrosine kinases and activating PI3