Question 1

Which of the following best describes an organic compound?

Accepted Answer

A compound that contains carbon atoms bonded to hydrogen and often other elements.

Question 2

Carbon's ability to form large, complex, and diverse molecules is primarily due to which property?

Accepted Answer

Its electron configuration allows it to form four covalent bonds with other atoms.

Question 3

Which of the following is NOT a reason why hydrocarbons are hydrophobic?

Accepted Answer

Hydrocarbons have polar functional groups that readily form hydrogen bonds with water.

Question 4

Which of the following is a correct structural formula for a methyl group?

Accepted Answer

$\mathrm{CH_3}$

Question 5

A molecule with the formula $\mathrm{C_2H_4}$ can exist as which type of isomer?

Accepted Answer

Cis-trans isomers

Question 6

Which functional group is most likely to act as a base by accepting a proton ($\mathrm{H^+}$) in aqueous solution?

Accepted Answer

Amino group

Question 7

Which of the following best explains why carbon skeletons can vary in length, branching, and ring formation?

Accepted Answer

Carbon can form single, double, or triple covalent bonds with other carbons.

Question 8

Which functional group is found in ATP and is key to energy transfer in cells?

Accepted Answer

Phosphate group

Question 9

Which of the following pairs of molecules are enantiomers?

Accepted Answer

Two molecules that are mirror images of each other and not superimposable.

Question 10

A hydrocarbon chain with a carboxyl group attached is most likely to be found in which type of biological molecule?

Accepted Answer

Fatty acid

Question 11

Which of the following functional groups is most likely to increase the solubility of an organic molecule in water?

Accepted Answer

Hydroxyl group

Question 12

Which of the following statements about isomers is correct?

Accepted Answer

Cis-trans isomers differ in the spatial arrangement of atoms around a double bond.

Question 13

Which functional group is present in both amino acids and is responsible for their acidic properties?

Accepted Answer

Carboxyl group

Question 14

A molecule with the formula $\mathrm{C_6H_{12}O_6}$ contains which functional group that makes it a sugar?

Accepted Answer

Carbonyl group

Question 15

Which of the following best describes the chemical property of a sulfhydryl group?

Accepted Answer

It can form disulfide bridges, stabilizing protein structure.

Question 16

Which of the following is a correct representation of a carboxyl group?

Accepted Answer

$\mathrm{-COOH}$

Question 17

Which functional group is most likely to be found in DNA and RNA molecules?

Accepted Answer

Phosphate group

Question 18

Which of the following statements about organic molecules is correct?

Accepted Answer

Organic molecules can contain a variety of functional groups that determine their chemical properties.

Question 19

A patient is found to have a genetic disorder affecting the formation of disulfide bridges in proteins. Which functional group is most likely involved?

Accepted Answer

Sulfhydryl group

Question 20

Which of the following is a property of the phosphate group that is important in biological molecules?

Accepted Answer

It carries a negative charge and can participate in energy transfer.

Chapter 4: Carbon and the Molecular Diversity of Life – Study Notes

Study Guide - Practice Questions

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