BCH 201 CBT PRACTICE TEST

Ace/Undergragra March 23, 2023

4 145 1 minute read

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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

Ace/Undergragra

BCH 201

1 / 40

1. During the first stage of Glycolysis, phosporylation reaction happens how many times?

A. Four times

B. 2x

C. 3x

D. Once

2 / 40

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

A. Red blood cells

B. Brain

C. Skeletal muscle

D. Cardiac muscle

3 / 40

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

A. Enteropeptidase

B. Elastase

C. Oligopeptides

D. Arginine

4 / 40

4. 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

5 / 40

5. ATP means

A. None of the options

B. Adenine triphosphate

C. Alanine triphosphate

D. Adenosine triphosphate

6 / 40

6. Which of the following is termed as conserved gene order?

A. Ortholog

B. Synteny

C. Microarray

D. Paralog

7 / 40

7. The enzymes that are involved in this stage of Glycolysis include all but;

A. Pyruvate kinase

B. Enolase

C. None of the options

D. 2-phosphoglyceromutase

8 / 40

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

A. Four

B. Five

C. Three

D. Two

9 / 40

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

A. Triose phosphate isomerise

B. Aldolase

C. Phosphofructokinase

D. Hexokinase

10 / 40

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

A. Straight line with negative slope

B. Straight line with positive slope

C. Hyperbolic curve

D. Parabola

11 / 40

11. How many types of signal transducers are there?

A. 7

B. 6

C. 8

D. 4

12 / 40

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

A. Bradykinin

B. Corticotropin

C. Glucagon

D. Insulin

13 / 40

13. ATP contains ----- molecules of phosphates

A. 3

B. 5

C. 2

D. 4

14 / 40

14. The enzymes involved in ketogenesis are

A. β-ketothiolase

B. HMG-coA synthase

C. All the options

D. HMGcoA lyase

15 / 40

15. Non pathologic forms of ketosis are due to;

A. The post absorptive phase of severe exercise

B. Diabetic ketoacidosis

C. Refsum's disease

D. Jamaican Vomiting sickness

16 / 40

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

A. Hexokinase

B. Chymotrypsin

C. Trypsin

D. Enolase

17 / 40

17. Which is not true about acetone?

A. Acetone productions can lethal levels in severe diabetic ketoacidosis

B. It is not produced under normal conditions

C. It is volatile and thus detectable in the breath

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

18 / 40

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

A. Carnitine acyl transferase 1 facilitates synthesis of Acyl carnitine

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

C. Free carnitine remains in the mitochondrial matrix

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

19 / 40

19. This is not an essential amino acid.

A. Glycine

B. Tryptophan

C. Phenylalanine

D. Valine

20 / 40

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

A. Tall plants

B. Disease resistant plants

C. Hybrid plants

D. Virus free plants

21 / 40

21. Arrangement of nucleotides in DNA can be seen using which of the following instruments?

A. X-Ray crystallography

B. Electron microscope

C. Light microscope

D. Ultracentrifuge

22 / 40

22. 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 without T-cell help

B. Antibody is generated fast

C. Many antibodies are produced

D. Antibody produced has a greater affinity for the antigen

23 / 40

23. Cellular energy currency is in form of;

A. Phosphates

B. ADP

C. All the options

D. ATP

24 / 40

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

A. Acetyl coA

B. NADH

C. All the options

D. FADH2

25 / 40

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

A. m-RNA

B. sn-RNA

C. t-RNA

D. r-RNA

26 / 40

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

A. Vasopressin

B. Cortisol

C. Serotonin

D. Adrenaline

27 / 40

27. The heat of vaporization of water is ________

A. 1060 J/g

B. 1260 kJ/g

C. 2060 kJ/g

D. 2260 J/g

28 / 40

28. Which of the following is true about phosphodiester linkage?

A. 5’-phosphate group of one nucleotide unit is joined to the 3’-hydroxyl group of the next nucleotide

B. 5’-phosphate group of one nucleotide unit is joined to the 5’-hydroxyl group of the next nucleotide

C. 3’-phosphate group of one nucleotide unit is joined to the 3’-hydroxyl group of the next nucleotide

D. 3’-phosphate group of one nucleotide unit is joined to the 5’-hydroxyl group of the next nucleotide

29 / 40

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

A. Enoyl CoA hydratase

B. Thiolase

C. Acyl CoA dehydrogenase

D. β-hydroxyacyl CoA dehydrogenase

30 / 40

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

A. Triose phosphate isomerise

B. Aldolase

C. Glyceraldehyde 3-phosphate dehydrogenase

D. None of the options

31 / 40

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

A. NH4OH (excess) + HCl

B. HNO3 + NaOH

C. CH3 COOH + NaOH(excess)

D. H2 SO4 + KOH

32 / 40

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

A. None of the options

B. Enolase

C. Pyruvate kinase

D. 2-phosphoglyceromutase

33 / 40

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

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

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

C. It has alternating GC sequences

D. It is a permanent conformation of DNA

34 / 40

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

A. Covalent bonding

B. Hydrogen bonds between water molecules

C. Noncovalent interactions

D. Van der Waals forces of attraction

35 / 40

35. Which of these is an allosteric enzyme?

A. Hexokinase

B. Phospho glucose isomerise

C. Fructose 6-phosphate

D. Phosphofructokinase

36 / 40

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

A. Bacterial denitrogenate reductase

B. Phosphatase

C. Bacterial denitrogenate oxidase

D. Bacterial glutamine synthase

37 / 40

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

A. 26°C

B. 30°C

C. 37°C

D. 25°C

38 / 40

38. The number of milligrams of KOH required to neutralize the free and combined fatty acid in one gram of a given fat is called __________

A. Iodine number

B. Acid number

C. Saponification number

D. Polenske number

39 / 40

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

A. Hepatic conversion of acetyl coA from FA oxidation

B. Hepatic and skeletal muscle glycogenesis

C. Amino acid breakdown to ketone bodies

D. Hepatic gluconeogenesis

40 / 40

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

A. Aminopeptidase

B. Enteropeptidase

C. Oligopeptides

D. Arginine

Your score is

The average score is 48%

Please do well to drop a comment if this has really helped you. Thanks❤️

Ace/Undergragra March 23, 2023

4 145 1 minute read

0 0 votes

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4 Comments

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Booker

2 months 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

Ayomidotun Emmanuel
This is really funny though , thanks...
Ace/Undergragra
Thank you for stopping by....
Salimon
Great works...
Masaud salihu Mohammed
I like start payment my school fees...
Chioma Goodness Ekpo
Thanks, it's really helpful...

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