Q: The ATP diagram shows energy released when a phosphate group is removed. Which equation best represents this reaction?

$$ATP \rightarrow ADP + P_i + \text{energy}$$

Question 1

Which of the following best describes the process shown in the first image labeled 'Dehydration synthesis'?

Accepted Answer

A reaction where water is removed to combine two molecules into a larger molecule.

Question 2

In the hydrolysis reaction shown in the second image, which of the following statements is correct?

Accepted Answer

Hydrolysis is an exergonic reaction that releases energy.

Question 3

Referencing the third image, which statement correctly describes a redox reaction?

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 + BC

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

In the phospholipid bilayer image, what is the primary function of the hydrophilic head?

Accepted Answer

To interact with water and stabilize the membrane surface

Question 9

Which type of chemical bond is responsible for the complementary base pairing in DNA, as shown in the image?

Accepted Answer

Hydrogen bonds

Question 10

The foods shown in the image are rich in which type of organic molecule, and what is their primary function?

Accepted Answer

Carbohydrates; immediate energy source

Question 11

Based on the amino acid chart, which of the following amino acids is classified as hydrophobic?

Accepted Answer

Leucine

Question 12

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

Accepted Answer

Quaternary structure

Question 13

The phospholipid diagram shows a molecule with a hydrophilic head and hydrophobic tails. What is the significance of this arrangement in biological membranes?

Accepted Answer

It creates a barrier that separates intracellular and extracellular environments.

Question 14

The triglyceride structure consists of glycerol and three fatty acids. Which function is primarily associated with triglycerides in the body?

Accepted Answer

Energy storage

Question 15

Steroid molecules, as shown in the image, share which structural feature?

Accepted Answer

A backbone of four fused rings

Question 16

Using the codon chart, which codon codes for the amino acid methionine (Met)?

Accepted Answer

AUG

Question 17

In the nucleotide structure diagram, which component forms the backbone of nucleic acids?

Accepted Answer

Sugar-phosphate groups

Question 18

Which base pairing is unique to DNA and not found in RNA, as shown in the DNA vs. RNA image?

Accepted Answer

Adenine-Thymine

Question 19

The ATP diagram shows energy released when a phosphate group is removed. Which equation best represents this reaction?

Accepted Answer

$$ATP ightarrow ADP + P_i + 	ext{energy}$$

CHAPTER 2

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