Question 1

Which subatomic particle is different in isotopes of the same element?

Accepted Answer

Neutron

Question 2

What type of bond is formed between two hydrogen atoms in a water molecule?

Accepted Answer

Covalent bond

Question 3

Which of the following best describes the function of enzymes in a chemical reaction?

Accepted Answer

They decrease the activation energy required for the reaction.

Question 4

Refer to the first image. What does the distance labeled 'A' represent in the context of enzyme-catalyzed reactions?

Accepted Answer

The activation energy without an enzyme ($E_a$)

Question 5

Which of the following is an example of an inorganic compound?

Accepted Answer

Water

Question 6

What is the major difference between an inorganic and an organic compound?

Accepted Answer

Organic compounds contain carbon, inorganic compounds do not.

Question 7

Which of the following best describes the pH of blood?

Accepted Answer

Slightly basic, around 7.4

Question 8

Using the pH scale shown in the second image, which substance has a greater concentration of hydrogen ions: wine or baking soda?

Accepted Answer

Wine

Question 9

Which macromolecule is composed of nucleotide monomers?

Accepted Answer

Nucleic acid

Question 10

What are the three components of a nucleotide?

Accepted Answer

Phosphate group, pentose sugar, nitrogenous base

Question 11

Which nucleic acid carries our genetic information?

Accepted Answer

DNA

Question 12

Which nucleic acid is used to produce proteins?

Accepted Answer

RNA

Question 13

Which nucleic acid forms high-energy bonds?

Accepted Answer

ATP

Question 14

Which of the following is NOT a property of water?

Accepted Answer

Forms ionic bonds within molecules

Question 15

What is the difference between a monomer and a polymer?

Accepted Answer

A monomer is a single molecule, a polymer is a chain of monomers.

Question 16

Which type of bond is formed between monomers to produce a protein polymer?

Accepted Answer

Peptide bond

Question 17

Hemoglobin is an example of which protein structure?

Accepted Answer

Quaternary

Question 18

Which of the following is NOT a type of chemical bond?

Accepted Answer

Metallic bond

Question 19

Which of the following is a real-life example of a catabolic reaction?

Accepted Answer

Digestion of starch into glucose

Question 20

Which of the following is NOT a type of fat?

Accepted Answer

Cellulose

Chapter 2: Cell Chemistry & Cell Components – Key Study Notes

Study Guide - Practice Questions