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

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BCH 201

1 / 40

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

A. Acetyl coA

B. All the options

C. FADH2

D. NADH

2 / 40

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

A. Hepatic gluconeogenesis

B. Amino acid breakdown to ketone bodies

C. Hepatic and skeletal muscle glycogenesis

D. Hepatic conversion of acetyl coA from FA oxidation

3 / 40

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

A. Oxidation of fatty acyl CoA

B. None of the options

C. Oxidation of the β-hydroxy derivative

D. Hydration of the unsaturated fatty acyl CoA

4 / 40

4. Which is a ketose sugar isomer?

A. None of the options

B. Dihydroxyacetone phosphate

C. Fructose 1,6-biphosphate

D. Glyceraldehydes 3-phosphate

5 / 40

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

A. It is a permanent conformation of DNA

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

C. It has alternating GC sequences

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

6 / 40

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

A. Hydrogen bonds between water molecules

B. Van der Waals forces of attraction

C. Covalent bonding

D. Noncovalent interactions

7 / 40

7. Which is not true about cellular fatty acid metabolism?

A. Fatty acid activation occurs in the cytosol as fatty acyl CoAs

B. None of the options

C. Fatty acid oxidation occurs in the mitochondrial matrix

D. Free fatty acids travels through the blood stream bound to serum albumin

8 / 40

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

A. r-RNA

B. t-RNA

C. m-RNA

D. sn-RNA

9 / 40

9. Mobilization of free fatty acids from fat stores is herald by all these mechanisms but

A. Phosphorylation of hormone sensitive lipase

B. Lipolysis of triglycerides into glycerol and free fatty acids

C. Activation of intracellular second messenger cascade

D. None of the options

10 / 40

10. 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 produced has a greater affinity for the antigen

C. Antibody is generated fast

D. Many antibodies are produced

11 / 40

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

A. Enolase

B. Hexokinase

C. Chymotrypsin

D. Trypsin

12 / 40

12. Which of the following is a choline-containing lipid?

A. Phosphatidylethanolamine

B. Sphingomyelin

C. Phosphatidylserine

D. Phosphatidylglycerol

13 / 40

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

A. Cell wall

B. Myelin sheath

C. Inner mitochondrial membrane of the hepatocyte

D. Plasma membrane

14 / 40

14. The reactions in the first stage of the glycolytic pathway comprises of which of the following?

A. Isomerization

B. Decarboxylation

C. Dehydrogenation

D. Decarboxylation

15 / 40

15. The heat of vaporization of water is ________

A. 1260 kJ/g

B. 2060 kJ/g

C. 2260 J/g

D. 1060 J/g

16 / 40

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

A. Cardiac muscle

B. Brain

C. All the options

D. Skeletal muscle

17 / 40

17. Which of the following is a function of chaperone protein?

A. It rescues proteins that have folded improperly and allowed them to refold properly

B. It degrades proteins that have folded improperly

C. It degrades proteins that have folded improperly

D. provides a template for how the proteins should fold

E. It degrades proteins that have folded properly

18 / 40

18. Which is true about ketone bodies?

A. They are synthesized during prolonged fasting

B. They are water-soluble

C. All the options

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

19 / 40

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

A. 5

B. 6

C. 4

D. 3

20 / 40

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

A. Thiolase

B. Acyl CoA dehydrogenase

C. Enoyl CoA hydratase

D. β-hydroxyacyl CoA dehydrogenase

21 / 40

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

A. Straight line with negative slope

B. Parabola

C. Hyperbolic curve

D. Straight line with positive slope

22 / 40

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

A. Bacterial denitrogenate oxidase

B. Bacterial denitrogenate reductase

C. Phosphatase

D. Bacterial glutamine synthase

23 / 40

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

A. Electron microscope

B. Ultracentrifuge

C. X-Ray crystallography

D. Light microscope

24 / 40

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

A. 37°C

B. 25°C

C. 30°C

D. 26°C

25 / 40

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

A. Three

B. Two

C. Five

D. Four

26 / 40

26. 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 ligase and joining with endonuclease

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

27 / 40

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

A. Starch

B. Amylose

C. Cellulose

D. Glycogen

28 / 40

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

A. Elastase

B. Arginine

C. Oligopeptides

D. Enteropeptidase

29 / 40

29. Which is an aldose sugar?

A. All the options

B. Dihydroxyacetone phosphate

C. Glyceraldehydes 3-phosphate

D. Fructose 1,6-biphosphate

30 / 40

30. Which is not true about acetone?

A. It is not produced under normal conditions

B. Acetone productions can lethal levels in severe diabetic ketoacidosis

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

D. It is volatile and thus detectable in the breath

31 / 40

31. Disorders of fatty acid oxidation include;

A. Carnitine deficiency

B. All the options

C. Ketoacidosis

D. Carnitine deficiency

32 / 40

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

A. 3

B. 4

C. 5

D. 2

33 / 40

33. The enzymes involved in ketogenesis are

A. HMG-coA synthase

B. β-ketothiolase

C. HMGcoA lyase

D. All the options

34 / 40

34. Which of these is an allosteric enzyme?

A. Phosphofructokinase

B. Fructose 6-phosphate

C. Phospho glucose isomerise

D. Hexokinase

35 / 40

35. ATP contains ----- molecules of phosphates

A. 4

B. 5

C. 2

D. 3

36 / 40

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

A. Mannose & Glucose

B. Galactose & Mannose

C. Glucose & Ribose

D. Glucose & Galactose

37 / 40

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

A. Glucagon

B. Somatostatin

C. Epinephrine

D. Insulin

38 / 40

38. Which is not true about carnitine deficiency?

A. It is due to inadequate biosynthesis

B. It is not treatable

C. Symptoms include hypoglycemia, lipid accumulation and muscular weakness

D. It occurs particularly in the preterm infants

39 / 40

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

A. Virus free plants

B. Disease resistant plants

C. Tall plants

D. Hybrid plants

40 / 40

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

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

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

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

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

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Booker

1 year ago

Where is the test??

Author

Aruwaji Philip

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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