Question 1

Which property is most characteristic of hydrocarbons, as described in organic chemistry?

Accepted Answer

They tend to be nonpolar and are usually insoluble in water.

Question 2

Which functional group is present in both alcohols and phenols, and what is its general formula?

Accepted Answer

Hydroxyl group, $$\mathrm{-OH}$$

Question 3

A patient is diagnosed with lactose intolerance. Which carbohydrate is directly involved, and what type of compound is it?

Accepted Answer

Lactose; disaccharide

Question 4

Which reaction converts a primary alcohol into a carboxylic acid?

Accepted Answer

Oxidation

Question 5

What is the main structural difference between alkanes, alkenes, and alkynes?

Accepted Answer

Alkanes have only single bonds, alkenes have at least one double bond, and alkynes have at least one triple bond.

Question 6

Which lipid type is a major component of cell membranes and contains both polar and nonpolar parts?

Accepted Answer

Phospholipids

Question 7

What is the result of denaturation of a protein?

Accepted Answer

Loss of secondary, tertiary, or quaternary structure

Question 8

Which process describes the conversion of DNA to mRNA in cells?

Accepted Answer

Transcription

Question 9

A triglyceride undergoes hydrolysis. What are the products?

Accepted Answer

Fatty acids and glycerol

Question 10

Which of the following is a weak base that contains a nitrogen atom and is soluble in water up to 6 carbon atoms?

Accepted Answer

Amine

Question 11

Which carbohydrate is stored in animals and serves as an energy reserve?

Accepted Answer

Glycogen

Question 12

What is the main function of enzymes in biological systems?

Accepted Answer

They catalyze biochemical reactions.

Question 13

Which structural feature allows cis-trans isomerism in organic compounds?

Accepted Answer

Presence of a double bond

Question 14

Which compound is formed when an ester undergoes hydrolysis with a strong base?

Accepted Answer

Carboxylate salt

Question 15

What is the complementary base pair for adenine in DNA?

Accepted Answer

Thymine

Question 16

Which process is used to convert unsaturated fats to saturated fats?

Accepted Answer

Hydrogenation

Question 17

Which structure is responsible for the genetic code in cells?

Accepted Answer

Double helix of DNA

Question 18

Which reaction occurs when a carboxylic acid reacts with an alcohol?

Accepted Answer

Formation of an ester and water

Question 19

Which type of mutation can lead to a genetic disease by changing a single base in DNA?

Accepted Answer

Point mutation

Question 20

Which compound is formed when a secondary alcohol is oxidized?

Accepted Answer

Ketone

Comprehensive Review of Organic and Biological Chemistry (Chapters 11–17)

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