Q: Which of the following equations correctly represents the process of photosynthesis, which produces carbohydrates in plants?

$$6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{light energy} \rightarrow \mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$}$$

Question 1

Which of the following chemical formulas represents a carbohydrate?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$}$$

Question 2

Carbohydrates always contain which three elements?

Accepted Answer

Oxygen, hydrogen, carbon

Question 3

Which of the following foods would provide the fewest carbohydrates per gram?

Accepted Answer

Wild-caught salmon

Question 4

Why are whole fruit sources considered more healthful sources of carbohydrates compared to sweet products?

Accepted Answer

Whole fruits provide fiber, vitamins, and minerals along with carbohydrates.

Question 5

Which process in plants is responsible for the production of carbohydrates?

Accepted Answer

Photosynthesis

Question 6

A student claims that all carbohydrates are equally nutritious. Based on the study materials, which statement best evaluates this claim?

Accepted Answer

Carbohydrates from whole foods are generally more healthful than those from sweet products.

Question 7

Which of the following is NOT a source of carbohydrates?

Accepted Answer

Eggs

Question 8

Which molecule is the most biologically relevant sugar in human nutrition?

Accepted Answer

Glucose

Question 9

Carbohydrates are primarily used by the body for which purpose?

Accepted Answer

Providing energy

Question 10

Which of the following best describes the general chemical structure of carbohydrates?

Accepted Answer

They are composed of carbon, hydrogen, and oxygen in a ratio of 1:2:1.

Question 11

A person eats a meal containing starch. Which process must occur for the body to use the energy from this carbohydrate?

Accepted Answer

Starch must be broken down into glucose molecules.

Question 12

Which of the following is a polysaccharide found in plants that serves as an energy storage molecule?

Accepted Answer

Starch

Question 13

Which of the following statements about fiber is correct?

Accepted Answer

Fiber is a carbohydrate that is not digested but provides health benefits.

Question 14

If a food contains only protein and fat, but no carbohydrates, which of the following is most likely true?

Accepted Answer

It will not provide glucose for immediate energy.

Question 15

Which of the following is a monosaccharide?

Accepted Answer

Glucose

Question 16

A food label lists the following ingredients: whole grain wheat, sugar, milk powder, and vegetable oil. Which ingredient is the primary source of complex carbohydrates?

Accepted Answer

Whole grain wheat

Question 17

Which of the following equations correctly represents the process of photosynthesis, which produces carbohydrates in plants?

Accepted Answer

$$6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{light energy} ightarrow \mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$}$$

Question 18

Which of the following best explains why carbohydrates are considered a primary source of energy for most organisms?

Accepted Answer

Carbohydrates are easily broken down into glucose, which is used in cellular respiration.

Question 19

A patient is advised to increase their fiber intake. Which food group should they focus on to meet this recommendation?

Accepted Answer

Fruits and vegetables

Introduction to Carbohydrates: Structure, Sources, and Healthful Choices

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