Question 1

Which property of carbon allows it to form such a diverse set of organic molecules?

Accepted Answer

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

Question 2

Which of the following functional groups is always polar and acts as a base?

Accepted Answer

Amino group

Question 3

Hydrocarbons are molecules consisting entirely of carbon and hydrogen. Are hydrocarbons hydrophobic or hydrophilic?

Accepted Answer

Hydrophobic, because they are nonpolar and do not interact with water

Question 4

Which of the following is a correct balanced equation for the dehydration synthesis of two glucose molecules ($$C_6H_{12}O_6$) to form maltose (C$$_{12}$$H_{22}O$$_{11}$)?

Accepted Answer

$$C_6H_{12}O_6$ + C_6H_{12}O_6$ \rightarrow C$$_{12}$$H_{22}O$$_{11} + H_2O$

Question 5

Which functional group is found in nucleic acids and is characterized by a phosphorus atom bonded to four oxygen atoms?

Accepted Answer

Phosphate group

Question 6

What type of reaction breaks polymers into monomers by adding water?

Accepted Answer

Hydrolysis

Question 7

Which of the following best describes a macromolecule?

Accepted Answer

A large molecule made up of repeating subunits called monomers

Question 8

Which of the following is NOT a class of biological macromolecule?

Accepted Answer

Steroids

Question 9

Which type of covalent bond joins amino acids together in a protein?

Accepted Answer

Peptide bond

Question 10

Which functional group is massive, negatively charged, and found in ATP?

Accepted Answer

Phosphate group

Question 11

Which of the following statements about polymers and monomers is correct?

Accepted Answer

Monomers are joined together by dehydration synthesis to form polymers

Question 12

Which functional group acts as an acid by donating a proton ($$H^+) to $$solution?

Accepted Answer

Carboxyl group ($$-COOH)$$

Question 13

Which of the following is a correct description of a hydrolysis reaction?

Accepted Answer

A reaction that adds water to break a polymer into monomers

Question 14

Which of the following is a correct statement about the structure of ATP?

Accepted Answer

ATP contains three phosphate groups attached to a ribose sugar and adenine base

Question 15

Which of the following best explains why carbon can form the backbone of so many different organic molecules?

Accepted Answer

Carbon can form four covalent bonds with a variety of atoms

Question 16

Which of the following functional groups is hydrophobic and nonpolar?

Accepted Answer

Methyl group ($$-CH_3$)

Question 17

Which type of covalent bond connects nucleotides in a DNA strand?

Accepted Answer

Phosphodiester bond

Question 18

Which of the following is a real-life example of a hydrolysis reaction in the human body?

Accepted Answer

Digestion of starch into glucose molecules

Question 19

Which of the following statements about functional groups is correct?

Accepted Answer

Functional groups determine the chemical reactivity and polarity of organic molecules

Question 20

Which class of biological macromolecule is NOT a polymer?

Accepted Answer

Lipids

Lecture 5

Study Guide - Practice Questions

Study Guide - Flashcards