30 Questions
What is the main focus of Part 2 of the lecture on metabolism?
Pyruvate oxidation
Anabolic metabolism is characterized by:
Building complex molecules from simpler ones
Which of the following is NOT a type of lipid mentioned in the lesson plan?
Monosaccharides
What is the importance of fats as an energy reserve?
Providing long-term energy storage
What process is covered in Part 4 of the lecture on metabolism?
Electron transport chain
Which best describes the difference between monosaccharide and polysaccharide?
Complexity of structure
What is the immediate product of the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate?
Glyceraldehyde-3-phosphate
Which enzyme is responsible for the conversion of 1,3-bisphosphate to 3-phosphoglycerate in glycolysis?
Phosphoglycerate mutase
What is the final product of glycolysis?
Pyruvate
During glycolysis, what molecule acts as a coenzyme that accepts electrons and becomes reduced?
NAD+
Which step in glycolysis involves the conversion of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate?
Step 5
What is the net gain of ATP molecules produced per glucose molecule in glycolysis?
$2$
Which type of fatty acid has all carbons in the tail saturated with hydrogen atoms?
Saturated fatty acid
Which fatty acid contains some C=C bonds and is an example of a monounsaturated fatty acid found in animal fat?
Oleic acid
Why must not all polyunsaturated fatty acids be biosynthesized in humans?
They must be part of the diet
Which component is one of the major components of dietary fat?
Triacylglycerol
How are short-chain fatty acids absorbed into the bloodstream?
Directly into the blood stream from gut epithelial cells
Where are longer chain fatty acids and monoglycerides converted back to triacylglycerol for transportation?
ER of gut epithelial cells
Which molecules can feed into the citric acid cycle?
Carbohydrates, fats, and proteins
What is a common point where various metabolic pathways converge?
Acetyl CoA
How is acetyl CoA generated from proteins?
Through breakdown into amino acids and subsequent metabolism
Which of the following are NOT mentioned as major metabolic intermediates derived from amino acids?
Lactate
Where are amino acids transported after being broken down from proteins?
Other tissues through the blood
What happens to the carbon skeletons of amino acids in relation to the citric acid cycle?
They are metabolized to seven major metabolic intermediates
Which lipoprotein has the highest percentage of cholesterol/CE?
LDL
What is the primary function of LDL in lipid transport?
Transport of cholesterol to tissues
What is required as an absolute co-enzyme during the carboxylation step in the β-oxidation of fatty acids with an odd number of carbons?
Biotin
What is the direct product of β-oxidation in the mitochondrial matrix?
Acetyl CoA
Which step involves the synthesis of succinyl CoA in the β-oxidation of odd-numbered fatty acids?
Carboxylation
What compound directly enters the citric acid cycle from the β-oxidation of odd-numbered fatty acids?
Succinyl CoA
Test your knowledge on metabolism of life molecules, energy metabolism, carbohydrate biochemistry, types of lipids, and their significance in human biochemistry and metabolism. This quiz covers the basics of metabolism, carbohydrate catabolism, crystal structures, pyruvate oxidation, Acetyl-CoA, lipids, lipid transport, and more.
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