問題一覧
1
5. Which of the following fatty acids have the lowest melting point?
d. CH3(CH2)4CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH
2
11. HDLS are synthesized in?
b. Liver
3
26. Each Krebs cycle will yield what compounds?
a. Two CO2, Three NADH, One FADH2, One GTP
4
14. Which of the following statements is/are true about the phospholipids? I. This portion of the molecule (the "head") is polar and can form hydrogen bonds with water molecules, by contrast, the two fatty acids (the "tails") are nonpolar and can interact only with other lipids. II. This portion of the molecule (the "head") is hydrophobic, while the two fatty acids (the "tails") are hydrophilic.
b. Only statement I is True.
5
15. Cholesterol is the precursor of?
d. Both a and c
6
28. Enzymes can be named by first affixing the suffix-"___" to a descriptor for the type of reaction catalyzed by the enzyme.
b. -"ase"
7
20. Which of the following statements is/are true about the phospholipids? I. Lipoproteins are classified on the basis of their density. II. LDL and HDL being basically important in determining serum cholesterol levels.
a. Both statements are True.
8
16. These are carrier proteins that transports cholesterol from the liver where it is synthesized, to the tissues,
c. Lipoproteins
9
10. Which of the following is NOT a biological importance of Lipids?
d. Prevent the excessive gain of heat energy.
10
32. The citric acid cycle enzymes, enzymes for fatty acid oxidation, and pyruvate dehydrogenase are located in which part of the mitochondria?
d. Matrix
11
7. A type of fatty acid that have no double bonds in their hydrocarbon chains and are solid at room temperature?
a. Saturated
12
17. Transports cholesterol from the liver to the tissues. Often called as bad cholesterol.
a. LDL
13
13. The single fatty acid of sphingomyelin is bonded to the carbon backbone by what type of bond?
a. Amide bond
14
3. These are triesters formed from glycerol and three molecules of Fatty acids.
b. Triglycerides
15
23. During the Krebs cycle, which enzyme catalyzes cleaving of a high-energy thioester bond of succinyl COA?
c. Succinate thiokinase
16
36. Succinate is oxidized to fumarate by which of the following enzymes?
d. Succinate dehydrogenase
17
4. These are derived from Fatty Acids having a larger number of double bonds.
c. Oils
18
40. Krebs cycle is composed of how many steps starting from the condensation of Acetyl-CoA and Oxaloacetate?
c. 8
19
27. The enzyme in the Krebs cycle, which is for the substrate-level phosphorylation of GDP to GTP.
b. Succinate thiokinase
20
31. Cells with low respiration rates have more cristae. Cells with high respiration rates have fewer cristae.
a. Only the first statement is true.
21
39. Which of the following enzymes is involved in the decarboxylation step in the pyruvate dehydrogenase complex?
a. E1
22
21. Where does oxidative phosphorylation take place?
a. Mitochondria
23
8. Lipids are biomolecules that are soluble in organic solvents and insoluble in water. They contain many nonpolar C-C and C-H bonds and few polar bonds resulting in their water insolubility.
c. Both statements are true.
24
12. What type of macromolecules are dominantly seen in cell membranes?
d. Lipids
25
1. _____ have higher melting points and are solids at room temperature
B. FATS
26
19. Cephalin and Lecithin are what type of phospholipids?
a. Phosphoacylglycerols
27
29. Gain of electrons can be termed as _____
d. Reduction
28
37. It is the fuel for the citric acid cycle generated from pyruvate.
A. Acetyl CoA
29
2. These are esters formed from a fatty acid and a high molecular weight alcohol.
a. Waxes
30
18. Transport cholesterol from the tissues back to the liver where it is converted to other substances or eliminated. Often called as good cholesterol.
b. HDL
31
25. Loss of electrons can be termed as _____.
c. Oxidation
32
9. Which of the following has the highest melting point?
b. CH3(CH2)16COOH
33
24. The enzyme in the Krebs cycle that requires five cofactors.
d. Alpha-ketoglutarate dehydrogenase
34
38. If there is eight NADH and four FADH2 and four GTP produced in two cycles of Krebs cycle, how miny ATPs are produced?
b. 30 ATP
35
34. Which of the following enzymes in the Krebs cycle is found in the inner mitochondrial membrane?
d. Succinate dehydrogenase
36
35. In anaerobic conditions, the pyruvate is converted into
d. Both A and B
37
33. Which of the following enzymes is involved in isomerization of citrate to isocitrate by rearrangement of the molecule in Krebs cycle?
b. Aconitase hydratase
38
22. Dihydrolipoyl transacetylase enzyme that is one of the components of the Pyruvate dehydrogenase complex has what cofactor?
a. Coenzyme A
39
30. Where does glycolysis take place?
c. Cytoplasm
40
6. Which of the following is not a compound lipid?
a. Triglycerols