BIOCHEM

40問 • 1年前

Claribelle Gomez

通報

問題一覧

1. _____ have higher melting points and are solids at room temperature

B. FATS

2. These are esters formed from a fatty acid and a high molecular weight alcohol.

a. Waxes

3. These are triesters formed from glycerol and three molecules of Fatty acids.

b. Triglycerides

4. These are derived from Fatty Acids having a larger number of double bonds.

c. Oils

5. Which of the following fatty acids have the lowest melting point?

d. CH3(CH2)4CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH

6. Which of the following is not a compound lipid?

a. Triglycerols

7. A type of fatty acid that have no double bonds in their hydrocarbon chains and are solid at room temperature?

a. Saturated

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.

9. Which of the following has the highest melting point?

b. CH3(CH2)16COOH

10. Which of the following is NOT a biological importance of Lipids?

d. Prevent the excessive gain of heat energy.

11. HDLS are synthesized in?

b. Liver

12. What type of macromolecules are dominantly seen in cell membranes?

d. Lipids

13. The single fatty acid of sphingomyelin is bonded to the carbon backbone by what type of bond?

a. Amide bond

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.

15. Cholesterol is the precursor of?

d. Both a and c

16. These are carrier proteins that transports cholesterol from the liver where it is synthesized, to the tissues,

c. Lipoproteins

17. Transports cholesterol from the liver to the tissues. Often called as bad cholesterol.

a. LDL

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

19. Cephalin and Lecithin are what type of phospholipids?

a. Phosphoacylglycerols

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.

21. Where does oxidative phosphorylation take place?

a. Mitochondria

22. Dihydrolipoyl transacetylase enzyme that is one of the components of the Pyruvate dehydrogenase complex has what cofactor?

a. Coenzyme A

23. During the Krebs cycle, which enzyme catalyzes cleaving of a high-energy thioester bond of succinyl COA?

c. Succinate thiokinase

24. The enzyme in the Krebs cycle that requires five cofactors.

d. Alpha-ketoglutarate dehydrogenase

25. Loss of electrons can be termed as _____.

c. Oxidation

26. Each Krebs cycle will yield what compounds?

a. Two CO2, Three NADH, One FADH2, One GTP

27. The enzyme in the Krebs cycle, which is for the substrate-level phosphorylation of GDP to GTP.

b. Succinate thiokinase

28. Enzymes can be named by first affixing the suffix-"___" to a descriptor for the type of reaction catalyzed by the enzyme.

b. -"ase"

29. Gain of electrons can be termed as _____

d. Reduction

30. Where does glycolysis take place?

c. Cytoplasm

31. Cells with low respiration rates have more cristae. Cells with high respiration rates have fewer cristae.

a. Only the first statement is true.

32. The citric acid cycle enzymes, enzymes for fatty acid oxidation, and pyruvate dehydrogenase are located in which part of the mitochondria?

d. Matrix

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

34. Which of the following enzymes in the Krebs cycle is found in the inner mitochondrial membrane?

d. Succinate dehydrogenase

35. In anaerobic conditions, the pyruvate is converted into

d. Both A and B

36. Succinate is oxidized to fumarate by which of the following enzymes?

d. Succinate dehydrogenase

37. It is the fuel for the citric acid cycle generated from pyruvate.

A. Acetyl CoA

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

39. Which of the following enzymes is involved in the decarboxylation step in the pyruvate dehydrogenase complex?

a. E1

40. Krebs cycle is composed of how many steps starting from the condensation of Acetyl-CoA and Oxaloacetate?

c. 8

PSTM TEST REVIEWER

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PSTM TEST REVIEWER

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HIS TEST REVIEWER

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ANACHEM FINALS

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ANACHEM FINALS

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PSTM FINALS

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PSTM FINALS

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CPH FINALS

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CPH FINALS

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HIS FINALS

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HIS FINALS

49問 • 1年前

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BIOCHEM ADDITIONAL

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BIOCHEM ADDITIONAL

22問 • 1年前

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LABMAN ADDITIONAL

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LABMAN ADDITIONAL

5問 • 1年前

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CYTOGENETICS

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CYTOGENETICS

52問 • 1年前

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MOLBIO

Claribelle Gomez · 20問 · 1年前

MOLBIO

20問 • 1年前

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LABMAN

Claribelle Gomez · 7問 · 1年前

LABMAN

7問 • 1年前

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MT LAWS

Claribelle Gomez · 60問 · 1年前

MT LAWS

60問 • 1年前

Claribelle Gomez

問題一覧

1. _____ have higher melting points and are solids at room temperature

B. FATS

2. These are esters formed from a fatty acid and a high molecular weight alcohol.

a. Waxes

3. These are triesters formed from glycerol and three molecules of Fatty acids.

b. Triglycerides

4. These are derived from Fatty Acids having a larger number of double bonds.

c. Oils

5. Which of the following fatty acids have the lowest melting point?

d. CH3(CH2)4CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH

6. Which of the following is not a compound lipid?

a. Triglycerols

7. A type of fatty acid that have no double bonds in their hydrocarbon chains and are solid at room temperature?

a. Saturated

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.

9. Which of the following has the highest melting point?

b. CH3(CH2)16COOH

10. Which of the following is NOT a biological importance of Lipids?

d. Prevent the excessive gain of heat energy.

11. HDLS are synthesized in?

b. Liver

12. What type of macromolecules are dominantly seen in cell membranes?

d. Lipids

13. The single fatty acid of sphingomyelin is bonded to the carbon backbone by what type of bond?

a. Amide bond

b. Only statement I is True.

15. Cholesterol is the precursor of?

d. Both a and c

16. These are carrier proteins that transports cholesterol from the liver where it is synthesized, to the tissues,

c. Lipoproteins

17. Transports cholesterol from the liver to the tissues. Often called as bad cholesterol.

a. LDL

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

19. Cephalin and Lecithin are what type of phospholipids?

a. Phosphoacylglycerols

a. Both statements are True.

21. Where does oxidative phosphorylation take place?

a. Mitochondria

22. Dihydrolipoyl transacetylase enzyme that is one of the components of the Pyruvate dehydrogenase complex has what cofactor?

a. Coenzyme A

23. During the Krebs cycle, which enzyme catalyzes cleaving of a high-energy thioester bond of succinyl COA?

c. Succinate thiokinase

24. The enzyme in the Krebs cycle that requires five cofactors.

d. Alpha-ketoglutarate dehydrogenase

25. Loss of electrons can be termed as _____.

c. Oxidation

26. Each Krebs cycle will yield what compounds?

a. Two CO2, Three NADH, One FADH2, One GTP

27. The enzyme in the Krebs cycle, which is for the substrate-level phosphorylation of GDP to GTP.

b. Succinate thiokinase

28. Enzymes can be named by first affixing the suffix-"___" to a descriptor for the type of reaction catalyzed by the enzyme.

b. -"ase"

29. Gain of electrons can be termed as _____

d. Reduction

30. Where does glycolysis take place?

c. Cytoplasm

31. Cells with low respiration rates have more cristae. Cells with high respiration rates have fewer cristae.

a. Only the first statement is true.

32. The citric acid cycle enzymes, enzymes for fatty acid oxidation, and pyruvate dehydrogenase are located in which part of the mitochondria?

d. Matrix

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

34. Which of the following enzymes in the Krebs cycle is found in the inner mitochondrial membrane?

d. Succinate dehydrogenase

35. In anaerobic conditions, the pyruvate is converted into

d. Both A and B

36. Succinate is oxidized to fumarate by which of the following enzymes?

d. Succinate dehydrogenase

37. It is the fuel for the citric acid cycle generated from pyruvate.

A. Acetyl CoA

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

39. Which of the following enzymes is involved in the decarboxylation step in the pyruvate dehydrogenase complex?

a. E1

40. Krebs cycle is composed of how many steps starting from the condensation of Acetyl-CoA and Oxaloacetate?

c. 8