Question 1

Which of the following best describes the process shown in the first image (Dehydration synthesis)?

Accepted Answer

A reaction where two monomers are joined together by removing a molecule of water.

Question 2

In the hydrolysis reaction shown in the second image, what is the role of water?

Accepted Answer

Water is added to break a polymer into two smaller molecules.

Question 3

Referencing the third image, which statement is true about redox reactions?

Accepted Answer

The reducing agent loses electrons and is oxidized.

Question 4

Based on the exchange reaction diagram, which of the following best represents an exchange reaction?

Accepted Answer

$$AB + CD \rightarrow AD + CB$$

Question 5

In the chemical equation $$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O$$, what does the subscript '12' in $$C_6H_{12}O_6$ represent?

Accepted Answer

The number of hydrogen atoms in one glucose molecule.

Question 6

According to the pH scale image, which of the following substances is most alkaline?

Accepted Answer

Soap

Question 7

The image of a water droplet on a coin demonstrates which property of water?

Accepted Answer

Water's surface tension due to cohesion

Question 8

Which part of the phospholipid bilayer shown in the image is hydrophobic?

Accepted Answer

The fatty acid tails

Question 9

In the DNA structure image, which bases are paired together?

Accepted Answer

Adenine with thymine, guanine with cytosine

Question 10

Which of the following foods shown in the image is primarily composed of polysaccharides?

Accepted Answer

Bread

Question 11

Which amino acid shown in the hydrophobic/polar chart is classified as hydrophobic?

Accepted Answer

Leucine

Question 12

Which protein structure is characterized by multiple polypeptide chains forming a functional unit, as shown in the protein structure image?

Accepted Answer

Quaternary structure

Question 13

Which part of the phospholipid molecule is responsible for its solubility in water?

Accepted Answer

Hydrophilic head

Question 14

What is the basic structure of a triglyceride as shown in the image?

Accepted Answer

Glycerol and three fatty acid chains

Question 15

Which molecule shown in the steroid structure image is responsible for secondary sexual characteristics?

Accepted Answer

Testosterone

Question 16

According to the genetic code chart, which codon codes for methionine (Met)?

Accepted Answer

AUG

Question 17

Which nitrogenous base is found in RNA but not in DNA, as shown in the nucleic acid structure image?

Accepted Answer

Uracil

Question 18

Which feature distinguishes DNA from RNA as shown in the DNA vs. RNA image?

Accepted Answer

DNA is double-stranded and contains deoxyribose

Question 19

What happens when ATP loses a phosphate group, as shown in the ATP image?

Accepted Answer

Energy is released for cell metabolism

Chapter 3

Study Guide - Practice Questions