MBC 201 CBT PRACTICE TEST

Ace/Undergragra February 9, 2024

2 305 1 minute read

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace MBC 201 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

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70 – 100 A

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45 – 49 D

40 – 44 E

0 – 39 F

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Created on February 09, 2024 By

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MBC 201

1 / 40

1. Which of the following is not correct about phosphorylation by IRS on serine residue?

A. It increases insulin levels

B. It is an inhibitory phosphorylation

C. Target tissues fail to respond to circulating insulin

D. It is molecular mechanism for insulin resistance

2 / 40

2. The pro-enzyme, trypsinogen in converted to active trypsin by _______,

A. Elastase

B. Arginine

C. Enteropeptidase

D. Oligopeptides

3 / 40

3. The breakdown of one molecule of Glucose will yield ------ molecules of pyruvate

A. Four

B. Two

C. Five

D. Three

4 / 40

4. The degree of ionization does not depend on which of the following parameter?

A. Concentration

B. Current

C. Temperature

D. Nature of solvent

5 / 40

5. During prolonged fasting, the body source its major metabolic fuel through which of the following metabolic events;

A. Hepatic and skeletal muscle glycogenesis

B. Amino acid breakdown to ketone bodies

C. Hepatic gluconeogenesis

D. Hepatic conversion of acetyl coA from FA oxidation

6 / 40

6. Based on which of the following enzymes Hydrolysis reactions are catalyzed?

A. Somerase

B. Hydrolase

C. Ligase

D. Oxidoreductase

7 / 40

7. Proteolytic enzymes in pancreatic juice include all but:

A. Trypsonogen

B. Pepsinogen

C. Pro-carboxypeptidase

D. Chymotripsinogens

8 / 40

8. Which of the following makes water a liquid at room temperature?

A. Covalent bonding

B. Van der Waals forces of attraction

C. Hydrogen bonds between water molecules

D. Noncovalent interactions

9 / 40

9. The first stage of the glycolytic pathway has______ chemical reaction steps

A. 4

B. 3

C. 10

D. 7

10 / 40

10. Which of the following catalyzes the reversible degradation of 2-phosphoglycerate to phosphoenolpyruvate?

A. Enolase

B. Chymotrypsin

C. Trypsin

D. Hexokinase

11 / 40

11. The heat of vaporization of water is ________

A. 1260 kJ/g

B. 2260 J/g

C. 2060 kJ/g

D. 1060 J/g

12 / 40

12. Which of the following is true about the Z-DNA helix?

A. It is a permanent conformation of DNA

B. It has alternating GC sequences

C. It has fewer base pairs per turn than B-DNA

D. It tends to be found at the 3’ end of the genes

13 / 40

13. Which of these is an allosteric enzyme?

A. Phosphofructokinase

B. Fructose 6-phosphate

C. Phospho glucose isomerise

D. Hexokinase

14 / 40

14. Which of the following is an imino acid?

A. Serine

B. Proline

C. Glycine

D. Alanine

15 / 40

15. Disorders of fatty acid oxidation include;

A. Carnitine deficiency

B. Ketoacidosis

C. Carnitine deficiency

D. All the options

16 / 40

16. Conversion of glyceraldehydes 3-phosphate to 1,3 - diphosphoglycerate, catalysed by

A. Triose phosphate isomerise

B. None of the options

C. Glyceraldehyde 3-phosphate dehydrogenase

D. Aldolase

17 / 40

17. Which is not true about carnitine deficiency?

A. Symptoms include hypoglycemia, lipid accumulation and muscular weakness

B. It is not treatable

C. It is due to inadequate biosynthesis

D. It occurs particularly in the preterm infants

18 / 40

18. Which of the following is abundantly found in collagen?

A. Glycine

B. Tryptophan

C. Serine

D. Alanine

19 / 40

19. Which of the following membrane lipids have a direct glycosidic linkage between the head-group sugar and the backbone glycerol?

A. Phospholipids

B. Glycolipids

C. Ether lipids

D. Sphingolipids

20 / 40

20. Which is true about ketone bodies?

A. They are water-soluble

B. They are synthesized during prolonged fasting

C. They are products of fatty acid and amino acid catabolism

D. All the options

21 / 40

21. Splitting of Fructose 1, 6 biphosphate yields ----- molecules of glyceraldehyde 3- phosphate

A. 2

B. 5

C. 3

D. 4

22 / 40

22. All but one is true about the carnitine fatty acyl carrier system

A. Carnitine acyl transferase 1 facilitates synthesis of Acyl carnitine

B. Carninitine acyl translocase transports acyl carnitine across the inner mitochondrial membrane into the matrix

C. Mitochondrial Carnitine acyl transferase II re-synthesizes fatty acyl CoA

D. Free carnitine remains in the mitochondrial matrix

23 / 40

23. Splitting of Fructose 1, 6 biphosphate is catalyzed by;

A. Hexokinase

B. Phosphofructokinase

C. Aldolase

D. Triose phosphate isomerise

24 / 40

24. Which of the following are important for white blood cell recognition?

A. Glycolipids

B. Glycosaminoglycans

C. Proteoglycans

D. Glycoproteins

25 / 40

25. Which of the following hormone is responsible for the activation of phospholipase C?

A. Cortisol

B. Serotonin

C. Adrenaline

D. Vasopressin

26 / 40

26. Which of the following proteins does not function in cell-cell interaction?

A. Cytochrome c

B. Cadherin

C. Integrin

D. N-CAM

27 / 40

27. Which of the following is an example of epimers?

A. Galactose & Mannose

B. Mannose & Glucose

C. Glucose & Galactose

D. Glucose & Ribose

28 / 40

28. The digestive enzyme that completes digestion of small peptides within the intestinal mucosal cells is ______,

A. Aminopeptidase

B. Oligopeptides

C. Enteropeptidase

D. Arginine

29 / 40

29. Fatty Acid Activation is triggered by all these hormones except

A. Insulin

B. Glucagon

C. Somatostatin

D. Epinephrine

30 / 40

30. The second stage of Glycolysis consists of ------ chemical reaction steps

A. 4

B. 5

C. 6

D. 7

31 / 40

31. When compared to the first immune response to the same antigen, which of the following is not a hallmark of the secondary immune response?

A. Antibody is generated fast

B. Antibody is generated without T-cell help

C. Many antibodies are produced

D. Antibody produced has a greater affinity for the antigen

32 / 40

32. The final step of production of pyruvate is catalyzed by;

A. None of the options

B. 2-phosphoglyceromutase

C. Enolase

D. Pyruvate kinase

33 / 40

33. Glyceraldehyde 3-phosphate contains ------- carbon units

A. 3

B. 5

C. 6

D. 4

34 / 40

34. Recombinant DNA construction involves ____________

A. Cleaving and joining DNA with restriction endonuclease

B. Cleaving DNA with a restriction endonuclease and joining with polymerase

C. Cleaving DNA with a restriction endonuclease and joining with ligase

D. Cleaving DNA with ligase and joining with endonuclease

35 / 40

35. Which of the following statements is correct about column chromatography?

A. Mobile phase is a porous solid material kept in the column with appropriate chemical characteristics

B. Large proteins exit the column faster than tiny proteins

C. Resolution improves as column length increases

D. Mobile phase is a porous solid material kept in the column with appropriate chemical characteristics

36 / 40

36. Which is a ketose sugar isomer?

A. Dihydroxyacetone phosphate

B. Glyceraldehydes 3-phosphate

C. None of the options

D. Fructose 1,6-biphosphate

37 / 40

37. Which is not true about acetone?

A. It is volatile and thus detectable in the breath

B. It is not produced under normal conditions

C. Acetone productions can lethal levels in severe diabetic ketoacidosis

D. It is a product of slow, spontaneous nonenzymatic decarboxylation of some aceto-acetate

38 / 40

38. Which of the following enzyme catalyzes a reaction that introduces reduced nitrogen ito cellular metabolism?

A. Bacterial denitrogenate oxidase

B. Phosphatase

C. Bacterial glutamine synthase

D. Bacterial denitrogenate reductase

39 / 40

39. Which is an aldose sugar?

A. All the options

B. Glyceraldehydes 3-phosphate

C. Fructose 1,6-biphosphate

D. Dihydroxyacetone phosphate

40 / 40

40. ATP contains ----- molecules of phosphates

A. 3

B. 4

C. 2

D. 5

Your score is

The average score is 36%

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Ace/Undergragra February 9, 2024

2 305 1 minute read

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Olamide

4 months ago

Thanks so much
It really helped me
Im truly grateful

Author

Reply to Olamide

You’re welcome. Thanks for stopping by.

Ace/Undergragra
I’ll see what I can do...
Blessing
Can we get more questions please?...
Stanley Daniel
Gst110...
Ace/Undergragra
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DEBORAH
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MBC 201 CBT PRACTICE TEST

Ace/Undergragra

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