BCH 201 CBT PRACTICE TEST : Undergragra

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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 BCH 201 exam

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

Note

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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Created on March 20, 2023 By

Aruwaji Philip

BCH 201

1 / 40

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

A. 4

B. 3

C. 2

D. 5

2 / 40

2. Recombinant DNA construction involves ____________

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

B. Cleaving DNA with ligase and joining with endonuclease

C. Cleaving and joining DNA with restriction endonuclease

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

3 / 40

3. Which of the following mixture in aqueous solution of equimolar concentration acts as a buffer solution?

A. NH4OH (excess) + HCl

B. H2 SO4 + KOH

C. CH3 COOH + NaOH(excess)

D. HNO3 + NaOH

4 / 40

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

A. Glucose & Ribose

B. Glucose & Galactose

C. Galactose & Mannose

D. Mannose & Glucose

5 / 40

5. This is not an essential amino acid.

A. Phenylalanine

B. Valine

C. Tryptophan

D. Glycine

6 / 40

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

A. Hexokinase

B. Triose phosphate isomerise

C. Phosphofructokinase

D. Aldolase

7 / 40

7. The first substrate of the second stage of Glycolysis is;

A. Fructose 1, 6 biphosphate

B. Fructose 6-phosphate

C. Glucose

D. None of the options

8 / 40

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

A. 6

B. 5

C. 4

D. 7

9 / 40

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

A. Van der Waals forces of attraction

B. Hydrogen bonds between water molecules

C. Noncovalent interactions

D. Covalent bonding

10 / 40

10. The fate of Free Amino Acids include all but:

A. All the options

B. They are used mainly to synthesize proteins

C. None of the options

D. They are degraded to yield ammonia

11 / 40

11. Cellular energy currency is in form of;

A. All the options

B. Phosphates

C. ADP

D. ATP

12 / 40

12. Which of the following involves carrying genetic information from DNA for protein synthesis?

A. t-RNA

B. m-RNA

C. sn-RNA

D. r-RNA

13 / 40

13. Which of the following is an imino acid?

A. Serine

B. Proline

C. Alanine

D. Glycine

14 / 40

14. Which of the following membranes contain low cholesterol and high cardiolipin?

A. Inner mitochondrial membrane of the hepatocyte

B. Myelin sheath

C. Plasma membrane

D. Cell wall

15 / 40

15. ATP contains ----- molecules of phosphates

A. 5

B. 4

C. 3

D. 2

16 / 40

16. When the velocity of enzyme activity is plotted against substrate concentration, which of the following is obtained?

A. Parabola

B. Straight line with negative slope

C. Hyperbolic curve

D. Straight line with positive slope

17 / 40

17. Thiolytic cleavage of β-ketoderivative by an incoming CoA to yield acetyl CoA is catalyzed by;

A. Enoyl CoA hydratase

B. Acyl CoA dehydrogenase

C. β-hydroxyacyl CoA dehydrogenase

D. Thiolase

18 / 40

18. Which of the following is a 39-residue hormone of the anterior pituitary gland?

A. Glucagon

B. Corticotropin

C. Insulin

D. Bradykinin

19 / 40

19. Which of the following temperature best suits the growth and multiplication of transformed cells?

A. 26°C

B. 37°C

C. 30°C

D. 25°C

20 / 40

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

A. Integrin

B. Cytochrome c

C. N-CAM

D. Cadherin

21 / 40

21. In which of the following, glucose residues are linked by β1 &arr; 4 glycosidic bonds?

A. Starch

B. Glycogen

C. Cellulose

D. Amylose

22 / 40

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

A. Phosphatase

B. Bacterial denitrogenate reductase

C. Bacterial denitrogenate oxidase

D. Bacterial glutamine synthase

23 / 40

23. Non pathologic forms of ketosis are due to;

A. Refsum's disease

B. Diabetic ketoacidosis

C. The post absorptive phase of severe exercise

D. Jamaican Vomiting sickness

24 / 40

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

A. Glycolipids

B. Sphingolipids

C. Phospholipids

D. Ether lipids

25 / 40

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

A. Temperature

B. Current

C. Nature of solvent

D. Concentration

26 / 40

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

A. Oligopeptides

B. Elastase

C. Arginine

D. Enteropeptidase

27 / 40

27. The heat of vaporization of water is ________

A. 2260 J/g

B. 1260 kJ/g

C. 2060 kJ/g

D. 1060 J/g

28 / 40

28. Meristem culture helps in developing which of the following?

A. Hybrid plants

B. Disease resistant plants

C. Virus free plants

D. Tall plants

29 / 40

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

A. Hepatic gluconeogenesis

B. Hepatic and skeletal muscle glycogenesis

C. Amino acid breakdown to ketone bodies

D. Hepatic conversion of acetyl coA from FA oxidation

30 / 40

30. Utilization of fatty acids for energy production is absent in which of these tissues

A. Cardiac muscle

B. Skeletal muscle

C. Red blood cells

D. Brain

31 / 40

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

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

B. Free carnitine remains in the mitochondrial matrix

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

D. Carnitine acyl transferase 1 facilitates synthesis of Acyl carnitine

32 / 40

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

A. Enolase

B. 2-phosphoglyceromutase

C. None of the options

D. Pyruvate kinase

33 / 40

33. The relationship between oxygen concentration and the fraction of binding sites occupied in myoglobin can best be described as ________

A. Linear with a positive slope

B. Linear with a negative slope

C. Hyperbolic

D. Parabolic

34 / 40

34. The process of β-oxidation of fatty acids includes all but one of the process

A. Oxidation of fatty acyl CoA

B. Hydration of the unsaturated fatty acyl CoA

C. None of the options

D. Oxidation of the β-hydroxy derivative

35 / 40

35. Ketones are excellent fuels for many non hepatic tissues including;

A. Brain

B. All the options

C. Skeletal muscle

D. Cardiac muscle

36 / 40

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

A. It has alternating GC sequences

B. It is a permanent conformation of DNA

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

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

37 / 40

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

A. Enolase

B. Hexokinase

C. Trypsin

D. Chymotrypsin

38 / 40

38. Which of the following is a intracellular second messengers?

A. Glutamate

B. IP3

C. Acetylcholine

D. Glycine

39 / 40

39. Splitting of 1,3 Diphosphoglycerate is catalyzed by;

A. None of the options

B. Phosphoglycerate kinase

C. Aldolase

D. Triose phosphate isomerise

40 / 40

40. Oxidative phosphorylation of fatty acids in the TCA cycle requires which of the following;

A. FADH2

B. NADH

C. All the options

D. Acetyl coA

Your score is

The average score is 39%

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Booker

1 year ago

Where is the test??

Author

Reply to Booker

I’m just realizing it.Currently working on making it active, please bear with me.

Oladimeji Oluwanifemi Hannah

Where the test dey

Reply to Oladimeji Oluwanifemi Hannah

I’m currently working on bringing the test live. Please bear with me

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