Question 1

Which property of carbon most directly allows it to form large, complex molecules essential for life?

Accepted Answer

Its capacity to form four covalent bonds with other atoms

Question 2

Which scientist's experiment helped disprove the vitalism theory by demonstrating that organic compounds could be synthesized from inorganic precursors?

Accepted Answer

Stanley Miller

Question 3

A molecule with the formula $$C_{6}H$$_{14}$$ is most likely a(n):

Accepted Answer

A hydrocarbon

Question 4

Which functional group is most likely to make a molecule hydrophilic?

Accepted Answer

Hydroxyl group ($$-OH)$$

Question 5

Which of the following best describes the difference between organic and inorganic compounds?

Accepted Answer

Organic compounds contain carbon atoms bonded to hydrogen, while inorganic compounds may lack this feature.

Question 6

Which of the following molecules is most likely to be hydrophobic?

Accepted Answer

Methane ($$CH_{4})$$

Question 7

A molecule contains both a carboxyl group ($$-COOH) $$and an amino group ($$-NH_{2}). $$What type of molecule is this most likely to be?

Accepted Answer

An amino acid

Question 8

Which of the following is a structural isomer?

Accepted Answer

Two molecules with the same molecular formula but different connectivity of atoms

Question 9

Which type of isomerism is responsible for the difference between cis- and trans-fatty acids?

Accepted Answer

Geometric isomerism

Question 10

A carbon atom bonded to four different groups is called:

Accepted Answer

An asymmetric carbon

Question 11

Enantiomers are important in pharmaceuticals because:

Accepted Answer

One enantiomer may be biologically active while the other is inactive or harmful

Question 12

Which functional group is most likely to act as an acid in aqueous solution?

Accepted Answer

Carboxyl group ($$-COOH)$$

Question 13

Which of the following best explains why hydrocarbons are generally insoluble in water?

Accepted Answer

Hydrocarbons lack polar functional groups that can form hydrogen bonds with water

Question 14

Which of the following molecules contains an asymmetric carbon?

Accepted Answer

Glyceraldehyde ($$C_{3}H$$_{6}$$O_{3}$)

Question 15

Which functional group is most likely to make a molecule basic?

Accepted Answer

Amino group ($$-NH_{2})$$

Question 16

Which of the following is a correct statement about the role of functional groups in organic molecules?

Accepted Answer

Functional groups determine the physical and chemical properties of organic molecules

Question 17

Which of the following best describes the difference between cis- and trans-isomers?

Accepted Answer

Cis-isomers have substituents on the same side of a double bond, trans-isomers have them on opposite sides

Question 18

Which of the following is a consequence of the presence of an asymmetric carbon in a molecule?

Accepted Answer

The molecule can exist as two enantiomers with different biological activities

Question 19

Which of the following best explains why the presence of a hydroxyl group ($$-OH) $$increases the solubility of a molecule in water?

Accepted Answer

The hydroxyl group can form hydrogen bonds with water molecules

Question 20

Which of the following is true about the concept of vitalism?

Accepted Answer

Vitalism states that organic compounds can only be produced by living organisms

Study Guide: Carbon and the Molecular Diversity of Life

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