Question 1

Which property of carbon allows it to form a wide variety of molecules essential for life?

Accepted Answer

Its ability to form up to four covalent bonds with other atoms

Question 2

Why are carbon-based molecules considered the foundation of organic chemistry?

Accepted Answer

Because carbon can bond with many elements and form chains and rings of various lengths

Question 3

Which of the following best describes a polymer?

Accepted Answer

A large molecule made up of repeating subunits called monomers

Question 4

Given the structure of benzene ($$C_6H_6$$), which feature is most significant in its stability?

Accepted Answer

The presence of alternating single and double bonds in a ring

Question 5

Which of the following is NOT a common element that carbon bonds with in living organisms?

Accepted Answer

Helium

Question 6

A student is analyzing a molecule with the formula $$C_6H_{12}O_6$. Which class of macromolecule is this most likely to be?

Accepted Answer

Carbohydrate

Question 7

Which of the following statements about macromolecules is correct?

Accepted Answer

Carbohydrates are polymers of simple sugars (monosaccharides)

Question 8

If a carbon atom forms a double bond with another carbon atom, how many additional single bonds can each carbon atom form?

Accepted Answer

Two

Question 9

Which of the following best explains why carbon can form such a diversity of organic molecules?

Accepted Answer

Carbon atoms can form single, double, and triple covalent bonds

Question 10

A molecule is described as a chain of nucleotides. Which type of macromolecule is this?

Accepted Answer

Nucleic acid

Question 11

Which of the following is a correct example of a monomer-polymer relationship?

Accepted Answer

Amino acid : Protein

Question 12

Which property of carbon is most responsible for the complexity of organic molecules?

Accepted Answer

Its ability to form four covalent bonds

Question 13

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

Accepted Answer

A polymer is made up of many monomers bonded together

Question 14

Which of the following is a real-world example of a carbon-based molecule with a ring structure?

Accepted Answer

Benzene

Question 15

If a molecule contains only carbon, hydrogen, and oxygen in a 1:2:1 ratio, which type of macromolecule is it most likely to be?

Accepted Answer

Carbohydrate

Question 16

Which of the following statements about organic molecules is correct?

Accepted Answer

All organic molecules contain carbon

Question 17

A scientist discovers a molecule with a long chain of carbon atoms, each bonded to hydrogen atoms, and very few oxygen atoms. This molecule is most likely a:

Accepted Answer

Lipid

Question 18

Which of the following best explains why living organisms depend on carbon-based molecules?

Accepted Answer

Carbon can form stable, diverse structures necessary for complex biological functions

Question 19

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

Accepted Answer

Producing light energy

Question 20

Which of the following best describes the structure of a typical carbohydrate molecule?

Accepted Answer

A ring or chain of carbon atoms bonded to hydrogen and oxygen in a 1:2:1 ratio

The Chemistry of Carbon: Structure and Importance in Biology

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