Question 1

Which of the following elements is NOT part of the CHNOPS mnemonic for the six most common elements in living things?

Accepted Answer

Calcium

Question 2

Which statement best describes an organic compound according to biological definitions?

Accepted Answer

It must contain at least one carbon-hydrogen bond and be made by a cell.

Question 3

Why is carbon considered the 'building block of life'?

Accepted Answer

It can form up to four covalent bonds, allowing for a variety of stable compounds.

Question 4

Which of the following is NOT a way that carbon skeletons can vary?

Accepted Answer

Type of ionic charge

Question 5

Which type of isomer has the same molecular formula but differs in the spatial arrangement around a double bond?

Accepted Answer

Cis-trans (geometric) isomers

Question 6

A molecule with the formula $$C_5H_{12}$$ can exist as pentane or 2-methylbutane. What type of isomers are these?

Accepted Answer

Structural isomers

Question 7

Which statement about ATP (adenosine triphosphate) is correct?

Accepted Answer

ATP stores energy in its covalently bonded phosphate groups, which is released when ATP is hydrolyzed to ADP and $$P_i.$$

Question 8

Which of the following is a correct general formula for carbohydrates?

Accepted Answer

$$C_nH_{2n}O_n$$

Question 9

Which of the following is a polysaccharide used for energy storage in animals?

Accepted Answer

Glycogen

Question 10

Which macromolecule is NOT made from monomers?

Accepted Answer

Lipids

Question 11

What type of bond joins two monosaccharides to form a disaccharide?

Accepted Answer

Glycosidic bond

Question 12

Which of the following is a function of proteins in living organisms?

Accepted Answer

Catalyzing biochemical reactions

Question 13

Which of the following correctly matches a polymer with its monomer?

Accepted Answer

Polypeptide — Amino acid

Question 14

Which of the following is NOT a function of nucleic acids?

Accepted Answer

Catalyzing chemical reactions

Question 15

Which of the following is a correct description of a polymer?

Accepted Answer

A substance that has a molecular structure consisting of many similar units bonded together.

Question 16

Which process joins monomers together to form polymers?

Accepted Answer

Polymerization

Question 17

Which of the following is a correct example of a disaccharide?

Accepted Answer

Sucrose

Question 18

Which of the following statements about enantiomers is correct?

Accepted Answer

They are mirror images of each other and cannot be superimposed.

Question 19

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

Accepted Answer

ATP + $$H_2O \rightarrow$$ ADP + $$P_i + $$energy

Question 20

Which of the following is a function of lipids in living organisms?

Accepted Answer

Repelling water and forming cell membranes

Carbon and the Chemistry of Life: Structure, Isomerism, and Macromolecules

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