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WorksheetsChapter Quiz in Lipid and Protein Metabolism
Total questions: 50
Worksheet time: 40mins
What is the major biological macromolecule that functions as an energy reserve, structural components of cell membranes, and signaling molecules?
Carbohydrates
Lipids
Proteins
Nucleic Acids
This refers to the synthesis and degradation of lipids for metabolic needs.
Lipogenesis
Lipid oxidation
Lipodystrophy
Lipid Metabolism
What will happen when there are excess lipids?
Blurry vision
Slow healing of wounds
Increased risk of heart diseases
Frequent urination
It is the simplest lipids formed by fatty acids
Phospholipids
Triacylglycerol
Sphingolipids
Cholesterol
This is the principal plasma lipoproteins carrier of cholesterol
IDL
HDL
LDL
ILY
Which is turned into a product that plays a role in fatty acid oxidation but not in fatty acid biosynthesis?
Niacin
Pyridoxamine
Thiamine
Riboflavin
What are bile acids?
Steroid acids
Gastric lipase
Peristaltic lipase
Phospholipids
What role does Acetyl-CoA play in lipid metabolism?
Precursor for fatty acid biosynthesis
Transport long-chain fatty acids into the mitochondrion
What do you call a triglyceride packaged along with cholesterol into a large lipoprotein particle?
Chylomicrons
Peroxisomes
Lipoproteins
Triacylglycerol
Which is a sign of Lipid Malabsorption?
Greasy stool
Excess lipid-soluble vitamins
Chest Pain
Weight Gain
What transports lipid from tissues to the liver?
HDL
LDL
IDL
SDL
What are ketone bodies usually synthesized from?
Acetyl-CoA
Pre-B cell
Methionine
Pyruvate
Oxidation of fats release more energy in calories than oxidation of carbohydrates or proteins
True
False
Bile salts convert big fat droplets into smaller droplets called micelles
True
False
Pancreatic lipase is the 1st enzyme to bind micelles during digestion
True
False
Triglycerides break down as glycerol and 3 fatty acids in the intestine
True
False
During beta-oxidation the 2-carbon unit removed from fatty acid is called ________
pyruvate
acetic acid
acetyl CoA
oxaloacetate
After 1 round of beta-oxidation the following products are formed
acetyl CoA
NADH
FADH2
all the above
Beta-oxidation occurs in the cytoplasm
True
False
Ketone bodies are formed from acetyl coA
True
False
Ketone body is formed during all of the following conditions, EXCEPT
starvation
vigorous exercise
diabetes
extreme diets
Blood pH becomes alkaline when ketone body levels are high
True
False
Ketone bodies are produced in the brain
True
False
Ketone bodies are formed when oxaloacetate levels are low
True
False
NADH is necessary for fatty acid synthesis
True
False
Fatty acid synthesis occurs in the mitochondria
True
False
What type of digestion occurs in the mouth?
Mechanical digestion
Chemical Digestion
Both
After being swallowed by the mouth, food travels down a long pipe called the_____
Stomach
Esophagus
large intestine
Small Intestine
After traveling down the esophagus, food reaches the _______ where it is digested by powerful acids and enzymes
mouth
stomach
small intestine
large intestine
The small intestines are lined with tiny projections called_____ which absorb the nutrients from the food into the bloodstream.
villi
cilia
flagellum
esophagus
What is absorbed by the large intestine before the remaining waste is excreted by the body?
solid waste
protein
glucose
water
A series of enzymatic reactions clubbed together are called ___________
catabolism
pathway
allosteric enzyme
none of the above
During catabolism, _________ produces maximum amount of ATP
stage 1
stage 2
stage 3
stage 4
The end product of stage 2 of catabolism of macromolecules inside cells is _________
monomers
CO2
acetyl coA
polysaccharide
TCA or Kreb's cycle finds place in __________ of catabolism
stage 1
stage 2
stage 3
stage 4
Gluconeogenesis predominanly occurs is
liver
brain
sketelal muscle
skeletal and cardiac muscles
Gluconeogenesis is a .... process.
anabolic
catabolic
hyperbolic
androbolic
1. WHICH IS THE ENZYME TO CATALYZE PYRUVIXC ACID TO OXALOACETATE?
PYRUVATE CARBOXYLASE
HEXOKINASE
GLUCOSE 6 PHOSPHATASE
GLUCOKINASE
Which of the following occurs in the cytosol of a eukaryotic cell?
Glycolysis and fermentation
Fermentation and chemiosmosis
Oxidation of pyruvate to acetyl CoA
Krebs cycle
In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of _____.
ATP, CO2, and ethanol (ethyl alcohol)
ATP, CO2, and lactate
ATP, NADH, and pyruvate
ATP, pyruvate, and acetyl CoA
One function of both alcohol fermentation and lactic acid fermentation is to _____.
Reduce NAD+ to NADH
Reduce FAD+ to FADH2
Oxidize NADH to NAD+
Reduce FADH2 to FAD+
In anaerobic condition, cell carry out fermentation process. What type of cell involve in the following fermentation?
Muscle
Brain
Bacterial
Yeast
Example of microorganism that involve in fermentation to produce yoghurt is
Saccharomyces sp.
Lactobacillus sp.
Baker Yeast
Acetobacter
What is the ultimate goal of Fermentation?
to make more ATP for the cell
to make more NADH for the Electron Transport Chain
to remake NAD+ for Glycolysis
to make glucose for the cell
in which organisms does lactic acid occur?
Animals, yeast, plants
humans, plants, bacteria, animals
Animals only
yeast only
