Biochem module 4 Flashcards
Lipoproteins transport lipids from the liver as A. Chylomicron B. VLDL C. LDL D. HDL
B
Lipoproteins transport lipids from the intestines as A. Chylomicron B. VLDL C. LDL D. HDL
A.
The protein moiety of a lipoprotein is known as
Apoprotein or apolipoprotein
Main site of TAG synthesis
SER
Constituent of the plasma lipid that is the least abundant A. triacylglycerols B. phospholipids C. cholesterol D. cholesteryl esters E. free fatty acids
E
Reduced form of iron
Ferrous ion Fe2+
Which of the ff is the largest A. Chylomicron B. VLDL C.LDL D. HDL
A
essential for chylomicron and VLDL formation A. Apo A B. Apo B C. Apo C D. Apo D
B
Which of the ff is not seen in the peripheral / outer side of the lipoprotein A. TAG B. integral apoprotein C. Cholesterol D. Phospholipid E. Peripheral apoprotein
A. Yun mga non polar nasa loob like cholesteryl ester, FFA
Also known as pre beta lipoprotein
VLDL
LDL- beta lipoprotein
HDL - alpha lipoprotein
Plasma glycoprotein that binds extracorpuscular Hb in a ght noncovalent complex
Haptoglobin
predominant lipid in HDL
Phospholipid
Rate limiting step in cholesterol synthesis
HMG CoA to mevalonate.. Enzyme is HMG CoA reductase
Where do Chylomicron remnants go to
Endocytosed by Liver for degradation and recycling
Free fatty acids are bound to _______ in the plasma
Albumin
Co factor of lipoprotein lipase A. Apo A-I B. Apo B -100 C. Apo C-II D. Apo E
C
Chemical rxn occurring in the rate limiting step of cholesterol synthesis
Reduction
Apolipoprotein associated with Chylomicron
ApoB 48
The ff stimulate lipolysis except A. Epinephrine B. Glucagon C. Nicotinic acid D. Caffeine E. Steroids
C. Inhibitory un insulin, and PGE
Ceruloplasmin acts by catalyzing
A. Converting iron ion to its reduced form
B. converting iron ion to its oxidized form
B
Hich of the ff statement is FALSE
A. Chylomicron is the largest among the lipoprotein
B. the primary apoprotein of IDL is B 100
C. HDL carries cholesterol to the liver
D. VLDL is primarily comprised of cholesterol
E. None of the above
D. Mostly TAG
What receptor in the liver recognizes HDL A. SRB 1 receptor B. LDL receptor C. ABCA1 receptor D. All of the above
A
Which of the ff stimulate lipid storage A. Epinephrine B. Glucagon C. Nicotinic acid D. Caffeine E. Steroids
C
Adipose Cannot utilize glycerol to synthesize TAG because it lacks what enzyme
Glycerol kinase
Insulin
A. Stimulates lipoprotein lipase
B. Inhibits lipoprotein lipase
B
Rate limiting enzyme in cholesterol synthesis A. HMG coA synthase B. HMG coA reductase C. HMG coA carboxylase D. HMG coA lyase
B
Which of the ff is false
A. Chylomicron is the largest among lipoprotein
B. Chylomicron has the highest percentage of lipid
C. Chylomicron is the densest of all lipoprotein
D. Chylomicron is produced. In the small intestine
C. Least dense xa
Hormone sensitive lipase is inhibited by
A. Insulin
B. Glucagon
A. Glucagon stimulates it
Oversupply of the cholesterol leads to The ff except A. Dec cholesterol synthesis B. Increase LDL receptor C. More LDL in the blood stream D. HMG CoA reductase is inhibited
B. Dapat decrease.
StArting material of heme
Succinyl coA and glycine
In coagulation cascade, the Gla- containing factors have a high binding affinity for what ion A. Mg B. Ca C. Fe D. Si
B
The association of tissue factor and factor VIIa is called
Tissue factor complex
Which enzyme converts HDL to cholesteryl ester A. ACAT B. LCAT C. HMG coA reductase D. Acetyl coA kinase
B. Yun ACAT. LDL to cholesteryl ester
Main storage area of TAG
Adipose
Major contributors to osmotic pressure of plasma
Albumin
Most active of the plasma lipids
Free fatty acid
Glucose is transported to the adipose by A. Glut 1 B. Glut 2 C. Glut 3 D. Glut 4
D
Oxidized LDL are also called as
Foam cells. They cause the atherosclerotic plaque
They are the vehicles of transport of triacylglycerol from the liver to the extrahepatic tissues A. Chylomicron B. VLDL C. LDL D. HDL
B
Precursor of all steroids in the body
Cholesterol
the vehicle of uptake of cholesterol and cholesteryl ester into many tissues A. Chylomicron B. VLDL C. LDL D. HDL
C
What metal is in the porphyrin ring of chlorophyll A. Calcium B. Iron C. Magnesium D, oxygen
C
Factor V is classified as
(1) zymogens of serine-protease
(2) cofactors
(3) fibrinogen
(4) a transglutaminase
(5) regulatory and other proteins
2.
Serine protease - factors 2,7,9,10,11,12 Cofactor -factors 3, 5, 8 Fibrinogen- factor 1 Transglutaminase- factor 13 Regulatory -protein c, protein s, thrombomodulin
What is the major protein component of plasma
Albumin
Insulin does the ff except a. Inc hormone sensitive lipase B. Inc cholesterol synthesis C. Inc lipogenesis D. None of the above
A. dapat dec
Cofactor in the rate limiting step of cholesterol synthesis
2 NADPH
Which of the ff has the highest protein content A. Chylomicron B. VLDL C. LDL D. HDL
D
Which of the ff statement is false
A. Heme synthesis involves the porphyrin and iron
B. Heme degradation produces iron and bilirubin
C. Type III porphyrin is classified as assymmetric substitution
D. Examples of type I porphyrin are heme and protoporphyrin IX
D. Type III
In order for hemoglobin to transport oxygen, it must be transported
A. In its ferrous form
B. in its ferric form
A
Rate limiting enzyme in bile acid synthesis
7 hydroxylase
Enzymes in the heme synthesis that is inhibited by lead
ALA dehydratase and ferrochelatase
The most prevalent metaloporphyrin in humans
Heme
What compound activates glycine
Pyridoxal phosphate