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MDCAT Chemistry Macromolecules Online Test

Mustansar KhanLast Updated: June 16, 2025

Chemistry Carboxylic Acid MCQS Online Test

MDCAT Chemistry Carboxylic Acid Chapter Online Test

Total Questions:	50
Time Allowed:	30 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	MDCAT Entry Test Chemistry Online Test Interview Questions about Chemisttry All Universities Entrance Test Recruitments Tests

MDCAT Chemistry Carboxylic Acid Test

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1. Which of the following is a protein hormone?

Estrogen

Testosterone

Insulin

Cortisol

2. Which of the following best describes enzymes?

Storage proteins

Catalytic proteins

Structural proteins

Transport proteins

3. Which bond is broken during the hydrolysis of proteins?

Disulfide bond

Peptide bond

Hydrogen bond

Ionic bond

4. What kind of protein is collagen?

Globular

Fibrous

Enzymatic

Hormonal

5. What are the building blocks of proteins?

Nucleotides

Fatty acids

Sugars

Amino acids

6. Which type of bond links amino acids in a protein?

Ester bond

Glycosidic bond

Peptide bond

Hydrogen bond

7. Which of the following proteins has a structural role?

Insulin

Pepsin

Keratin

Hemoglobin

8. Which type of protein helps defend the body against pathogens?

Structural

Transport

Enzymatic

Antibody

9. Which of the following enzymes functions in the stomach?

Pepsin

Amylase

Lipase

Trypsin

10. What determines the sequence of amino acids in a protein?

RNA polymerase

Enzyme action

Ribosome structure

DNA

11. What is the function of ribosomes in protein synthesis?

Assemble amino acids into proteins

Break down proteins

Store amino acids

Transport proteins

12. Which of the following best describes denaturation?

Increase in molecular weight

Protein synthesis

Protein digestion

Loss of secondary and tertiary structure

13. Which protein is found abundantly in red blood cells?

Hemoglobin

Actin

Myosin

Collagen

14. Which of the following is an example of a globular protein?

Keratin

Myosin

Hemoglobin

Collagen

15. Which of the following is a fibrous protein?

Hemoglobin

Albumin

Myosin

Insulin

16. What is denaturation of a protein?

Breakdown of amino acids

Unfolding of protein structure

Synthesis of protein

Formation of peptide bonds

17. What is the three-dimensional structure of a protein called?

Linear structure

Secondary structure

Primary structure

Tertiary structure

18. Which type of protein is insulin?

Transport protein

Hormonal protein

Defensive protein

Structural protein

19. What is the optimum pH for most enzymes in the human body?

20. What is the primary structure of a protein?

Interaction between polypeptides

Sequence of amino acids

Folding of protein

3D conformation

21. What is the main function of enzymes?

To transport oxygen

To store energy

To speed up chemical reactions

To act as structural components

22. Which factor does NOT affect enzyme activity?

Color of enzyme

Substrate concentration

Temperature

23. What is the inactive form of an enzyme called?

Coenzyme

Apoenzyme

Zymogen

Cofactor

24. Which of the following is not a function of proteins?

Genetic information storage

Catalysis

Energy storage

Transport

25. What is the effect of high temperature on most enzymes?

Freezes activity

Denatures them

Activates them

Enhances bonding

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26. Which of the following enzymes breaks down proteins?

Lipase

DNA polymerase

Amylase

Pepsin

27. What is the role of enzymes in metabolism?

They store energy

They transport waste

They slow down reactions

They regulate reaction speed

28. How many different amino acids are used in the synthesis of proteins in the human body?

29. Which of the following is a cofactor often required by enzymes?

Glucose

Metal ions

Fats

Water

30. Which enzyme breaks down fats in the human body?

Pepsin

Protease

Amylase

Lipase

31. What happens in the induced fit model of enzyme action?

The enzyme slightly changes shape to bind the substrate

The enzyme and substrate fit perfectly like a lock and key

The substrate is broken into multiple enzymes

The enzyme permanently changes shape

32. Which macromolecule category includes enzymes?

Nucleic acids

Lipids

Carbohydrates

Proteins

33. Which protein is responsible for muscle contraction?

Actin

Hemoglobin

Amylase

Insulin

34. What is the region where an enzyme binds its substrate?

Active site

Allosteric site

Binding domain

Protein core

35. What happens when an enzyme is exposed to a pH far from its optimum?

It dissolves

It speeds up

It becomes inactive

It denatures

36. Which enzyme breaks down hydrogen peroxide in cells?

Amylase

Pepsin

Urease

Catalase

37. Which of the following determines the function of a protein?

Its solubility

Its amino acid composition only

Its DNA sequence

Its primary structure

38. Which enzyme is present in saliva and begins the digestion of carbohydrates?

Lipase

Pepsin

Trypsin

Amylase

39. Which of the following is true about enzymes?

They are consumed during the reaction

They increase the temperature of the system

They alter the equilibrium of the reaction

They lower the activation energy

40. Which of the following are macromolecules composed of amino acids?

Proteins

Carbohydrates

Lipids

Nucleic acids

41. Which element is unique to proteins compared to carbohydrates and fats?

Oxygen

Hydrogen

Carbon

Nitrogen

42. Which of the following affects enzyme activity?

Color of enzyme

Cell size

DNA sequence

Substrate concentration

43. Which level of protein structure is determined by hydrogen bonding between nearby amino acids?

Secondary

Tertiary

Primary

Quaternary

44. Which property of enzymes makes them highly specific?

Their charge

Their solubility

Their mass

Their shape

45. Which component is not found in all amino acids?

Side chain (R group)

Phosphate group

Amino group

Carboxyl group

46. What happens to an enzyme when its shape is changed?

It becomes inactive

It becomes more efficient

It duplicates

It changes its DNA

47. What is the quaternary structure of a protein?

The sequence of amino acids

The 3D shape of a single polypeptide

A random coil structure

The interaction between multiple polypeptide chains

48. What is the main role of the R group in amino acids?

Stabilizes enzymes

Participates in peptide bonding

Provides acidity

Determines identity and properties of the amino acid

49. Which vitamin is a coenzyme for many enzymes?

Vitamin D

Vitamin B complex

Vitamin K

Vitamin C

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Mustansar KhanLast Updated: June 16, 2025

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MDCAT Chemistry Macromolecules Online Test

Chemistry Carboxylic Acid MCQS Online Test

MDCAT Chemistry Carboxylic Acid Chapter Online Test

MDCAT Chemistry Carboxylic Acid Test

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Chemistry Carboxylic Acid MCQS Online Test

MDCAT Chemistry Carboxylic Acid Chapter Online Test

MDCAT Chemistry Carboxylic Acid Test

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Mustansar Khan

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