MI PROFILE CREATINE KINASE (CK) Flashcards
A transferase that focuses on the transfer of phosphate group between substrates
a. AST
B.ALT
C. GGPT
D. CK
D. CK
Involved in the storage of high-energy creatine phosphate in muscle cells
a. AST
B.ALT
C. GGPT
D. CK
D. CK
In CK, the highest activities are in the
____________
a. skeletal muscle
b. heart
c. brain
d. liver
e. a,b,c
f. a,b,d
e. a,b,c
a. skeletal muscle
b. heart
c. brain
Phosphate is transferred from _____ to Creatine to produce Creatine Phosphate
a. carbon dioxide
b.glycogen
c. atp
d. lipase
c. atp
Creatine originates in the_____
liver from amino acids
3 AMINO ACIDS associate in creatinine
Glycine
Arginine
Methionine.
T OR FALSE
CK IS Not specific to the heart muscles
TRUE
STRUCTURE OF CREATINASE KINASE
A. MONOMERIC molecule
b. dimeric molecule
b. dimeric molecule
TRUE OR FALSE
CREATINE KINASE composed of 2 monomer sub-units such as the M (muscle) and the B (brain)Type)
TRUE
REACTION PRODUCT OF CK
A. CREATINE PHOSPHATE+ ADP
B. CREATINE PHOSPHATE+NADPH
A. CREATINE PHOSPHATE+ ADP
FORWARD REACTION IN CK
A. Oliver-Rosalki
B.Tanzer-Gilvarg
B.Tanzer-Gilvarg
↓ in absorbance at 340 nm is determined IN CK
A.Tanzer-Gilvarg
B.Oliver-Rosalki
A.Tanzer-Gilvarg
Optimum pH is 9.0
A. Oliver-Rosalki
B.Tanzer-Gilvarg
B.Tanzer-Gilvarg
PK – Pyruvate Kinase IS THE PRIMARY ENZYME
A. Oliver-Rosalki
B.Tanzer-Gilvarg
B.Tanzer-Gilvarg
TANZER- GILVARG
REACTION PRODUCT
A. LACTATE+NADH
B. LACTATE + NAD
B. LACTATE + NAD
Increased in absorbance at 340 nm is determined IN CK
A. Oliver-Rosalki
B.Tanzer-Gilvarg
A. Oliver-Rosalki A
REVERSE REACTION
(left to right)
A. Oliver-Rosalki
B.Tanzer-Gilvarg
B. tanzer
(right to left)
WITH OPTIMUM PH OF 6.8
A. Oliver-Rosalki
B.Tanzer-Gilvarg
A. Oliver-Rosalki
REACTION OF OLIVER ROSALKI
A. 6- PHOSPHOGLUCONATE+ NADPH + H
B. A. 6- PHOSPHOGLUCONATE+ NAD+ H
A. 6- PHOSPHOGLUCONATE+ NADPH + H
In normal healthy serum, the predominant CK activity comes from the ______-
A. HEART
B. MUSCLE
C. LIVER
D. SKELETAL
B. MUSCLE
For bedridden patients, CK ACTIVITY IS
A. DECREASE
B. INCREASE
A. DECREASE
Hemolysis cause false ↑ OR ↓ CK activIty?
↑ increase
CK is inactivated by _______
a. ATP
B. LIGHT
C. LYSED RBC
B. LIGHT