Question 1

Which of the following statements best describes the difference between a monomer and a polymer in biomolecules?

Accepted Answer

A monomer is a single small molecule, while a polymer is a large molecule made of many monomers joined together.

Question 2

Which biomolecule is primarily responsible for storing genetic information in living organisms?

Accepted Answer

Nucleic Acid

Question 3

A scientist tests a food sample with Lugol's iodine and observes a blue-black color change. What does this indicate about the sample?

Accepted Answer

The sample contains polysaccharides such as starch.

Question 4

Which elements are found in all carbohydrates, and what is their typical ratio?

Accepted Answer

Carbon, hydrogen, and oxygen in a 1:2:1 ratio

Question 5

Which of the following is the correct monomer for proteins?

Accepted Answer

Amino acid

Question 6

A triglyceride is formed by the bonding of which monomers?

Accepted Answer

Three fatty acids and one glycerol

Question 7

Which type of biomolecule is most likely to be found in cell membranes and is characterized by being water-insoluble?

Accepted Answer

Lipid

Question 8

Which test would you use to identify the presence of proteins in a solution, and what color change would indicate a positive result?

Accepted Answer

Biuret test (Copper Sulfate and Hydroxide); violet color

Question 9

Which of the following best explains why saturated fatty acids are solid at room temperature while unsaturated fatty acids are liquid?

Accepted Answer

Unsaturated fatty acids have double bonds that create kinks, preventing tight packing.

Question 10

Which of the following is NOT a function of proteins in living organisms?

Accepted Answer

Storing genetic information

Question 11

A food sample is tested with Sudan III and turns red/pink. What does this result indicate?

Accepted Answer

The sample contains lipids.

Question 12

Which of the following correctly matches the biomolecule with its primary function?

Accepted Answer

Lipid – stores long-term energy

Question 13

Which of the following is the correct chemical formula for glucose, a common carbohydrate monomer?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$}$$

Question 14

Which of the following statements about organic compounds is TRUE?

Accepted Answer

All organic compounds contain carbon.

Question 15

A patient is found to have a genetic disorder caused by a mutation in their DNA. Which biomolecule is directly affected?

Accepted Answer

Nucleic acid

Question 16

Which of the following is a polymer made from monosaccharide monomers?

Accepted Answer

Starch

Question 17

Which biomolecule would you expect to find in high amounts in muscle tissue due to its role in building and repairing tissues?

Accepted Answer

Protein

Question 18

Which of the following best describes the structure of a nucleotide, the monomer of nucleic acids?

Accepted Answer

A sugar, a phosphate group, and a nitrogenous base

Question 19

Which of the following reactions best represents the formation of a peptide bond between two amino acids?

Accepted Answer

$$\mathrm{Amino\ $$Acid_1$$ + Amino\ $$Acid_2$$ \rightarrow Dipeptide + H_2O}$$

Question 20

A student mixes a food sample with Benedict's solution and heats it. The solution turns orange. What does this indicate?

Accepted Answer

The sample contains monosaccharides (simple sugars).

Macromolecules: Structure, Function, and Types in Biology

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