Question 1

Which of the following best describes the difference between saturated and unsaturated hydrocarbons?

Accepted Answer

Saturated hydrocarbons contain only single bonds between carbon atoms, while unsaturated hydrocarbons contain at least one double or triple bond.

Question 2

Which of the following is the correct IUPAC name for the compound with the formula $$\mathrm{CH_3CH_2CH_2OH}$$?

Accepted Answer

Propanol

Question 3

A patient is diagnosed with lactose intolerance. Which disaccharide can they not properly digest, and which enzyme is deficient?

Accepted Answer

Lactose; lactase

Question 4

Which of the following statements about enzymes is CORRECT?

Accepted Answer

Enzymes lower the activation energy of a reaction, increasing the reaction rate.

Question 5

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

Accepted Answer

Unsaturated fatty acids have kinks in their hydrocarbon chains due to double bonds, preventing tight packing.

Question 6

Which of the following is a correct product of the oxidation of a primary alcohol?

Accepted Answer

An aldehyde

Question 7

A solution contains a carbohydrate that gives a positive Benedict's test. Which of the following is most likely present?

Accepted Answer

Glucose

Question 8

Which of the following best describes the tertiary structure of a protein?

Accepted Answer

The overall three-dimensional shape of a single polypeptide chain, stabilized by interactions between side chains.

Question 9

Which of the following statements about DNA and RNA is TRUE?

Accepted Answer

DNA contains deoxyribose, while RNA contains ribose.

Question 10

Which of the following is the correct product when an aldehyde is reduced?

Accepted Answer

A primary alcohol

Question 11

A triglyceride is formed by the reaction of which of the following?

Accepted Answer

Glycerol and three fatty acids

Question 12

Which of the following best describes the function of the lipid bilayer in cell membranes?

Accepted Answer

It acts as a selective barrier, allowing certain molecules to pass while blocking others.

Question 13

Which of the following is a correct statement about stereoisomers?

Accepted Answer

Stereoisomers have the same molecular formula and connectivity but differ in the spatial arrangement of atoms.

Question 14

Which of the following is a correct description of a peptide bond?

Accepted Answer

A covalent bond formed between the carboxyl group of one amino acid and the amino group of another.

Question 15

Which of the following best explains why cellulose cannot be digested by humans?

Accepted Answer

Humans lack the enzyme to hydrolyze the $$\beta-1$$,4-glycosidic bonds in cellulose.

Question 16

Which of the following is a correct statement about the hydrolysis of an ester?

Accepted Answer

It produces a carboxylic acid and an alcohol.

Question 17

Which of the following best describes the role of tRNA in protein synthesis?

Accepted Answer

It brings amino acids to the ribosome during translation.

Question 18

Which of the following is a correct statement about passive transport across cell membranes?

Accepted Answer

It does not require energy and moves substances down their concentration gradient.

Question 19

Which of the following is the correct product when a carboxylic acid reacts with an alcohol in the presence of an acid catalyst?

Accepted Answer

An ester and water

Question 20

Which of the following best describes the difference between amylose and amylopectin?

Accepted Answer

Amylose is a linear polymer of glucose, while amylopectin is branched.

CHEM 1152 Survey of Chemistry II: Syllabus and Study Guide

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