Q: Oxidative stress is caused by an imbalance between free radicals and antioxidants. Which equation best represents this relationship?

$$\text{Oxidative Stress} = \text{Free Radicals} - \text{Antioxidants}$$

Question 1

Which of the following best describes the role of antioxidants in the body?

Accepted Answer

They protect our bodies from oxidative stress by neutralizing free radicals.

Question 2

Which food group is most likely to provide a high amount of phytochemicals?

Accepted Answer

Fruits, vegetables, and unrefined grains

Question 3

A student wants to increase their intake of phytochemicals. Which of the following strategies would be most effective?

Accepted Answer

Eating a wide variety of fruits, vegetables, and unrefined grains

Question 4

Which statement is TRUE regarding antioxidants and phytochemicals?

Accepted Answer

Phytochemicals are non-nutrient plant substances with health benefits.

Question 5

Oxidative stress is caused by an imbalance between free radicals and antioxidants. Which equation best represents this relationship?

Accepted Answer

$$	ext{Oxidative Stress} = 	ext{Free Radicals} - 	ext{Antioxidants}$$

Question 6

Which of the following is a correct example of a phytochemical-rich food?

Accepted Answer

Broccoli

Question 7

If a person consumes a diet lacking in fruits and vegetables, which health risk increases due to reduced antioxidant intake?

Accepted Answer

Increased risk of oxidative stress-related diseases

Question 8

Which statement best explains why phytochemicals are considered beneficial for health?

Accepted Answer

They are non-nutrient plant substances that may reduce disease risk.

Question 9

A person wants to reduce their oxidative stress. Which dietary change would be most effective?

Accepted Answer

Increase intake of fruits, vegetables, and unrefined grains

Question 10

Which of the following is NOT a source of antioxidants?

Accepted Answer

Processed meats

Question 11

If $$	ext{Antioxidant Intake} = 5$$ servings/day and $$	ext{Free Radical Exposure} = 8$$ units/day, what is the net oxidative stress?

Accepted Answer

$$5 - 8 = -3 ($$Net oxidative stress: 3 units)

Question 12

Which of the following statements is FALSE regarding phytochemicals?

Accepted Answer

Phytochemicals are only found in animal-based foods.

Question 13

A person switches from a diet high in processed foods to one rich in fruits, vegetables, and unrefined grains. What is the most likely effect on their antioxidant and phytochemical intake?

Accepted Answer

Both antioxidant and phytochemical intake will increase.

Question 14

Which of the following best describes the relationship between antioxidants and phytochemicals?

Accepted Answer

Some phytochemicals act as antioxidants, but not all antioxidants are phytochemicals.

Question 15

Which of the following would NOT significantly increase your intake of phytochemicals?

Accepted Answer

Eating mostly processed foods

Question 16

Which of the following is a correct statement about antioxidants?

Accepted Answer

Antioxidants help protect the body from oxidative stress.

Question 17

A person is exposed to high levels of free radicals due to pollution and poor diet. Which dietary change would best help reduce oxidative stress?

Accepted Answer

Increase intake of antioxidant-rich foods such as fruits and vegetables

Question 18

Which of the following is a plausible misconception about phytochemicals?

Accepted Answer

Phytochemicals are essential nutrients required for survival.

Question 19

If a person's diet consists mainly of animal-based foods, which nutrient group are they most likely missing?

Accepted Answer

Phytochemicals

Question 20

Which of the following is the best example of a real-life application of antioxidants?

Accepted Answer

Using vitamin C from oranges to help reduce cellular damage from pollution

Antioxidants and Phytochemicals: Protecting the Body from Oxidative Stress

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