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

Question 1

Which of the following carbohydrates is NOT digestible by humans due to the lack of necessary enzymes in the gut?

Accepted Answer

Cellulose

Question 2

A patient is diagnosed with kwashiorkor. Which dietary deficiency is most likely responsible for this condition?

Accepted Answer

Protein

Question 3

Which of the following statements about lipids is CORRECT?

Accepted Answer

Lipids are composed of glycerol joined to three fatty acids.

Question 4

Which mineral is essential for the transport of oxygen in the blood, and what is its role?

Accepted Answer

Iron; forms part of haemoglobin in red blood cells

Question 5

Which equation best represents the oxidation of glucose to release energy in cells?

Accepted Answer

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

Question 6

Which of the following is the main storage carbohydrate in animal cells?

Accepted Answer

Glycogen

Question 7

A person consumes a diet high in saturated fats and cholesterol. Which health risk is most directly associated with this dietary pattern?

Accepted Answer

Cardiovascular disease

Question 8

Which of the following best describes the structure of a protein molecule?

Accepted Answer

A chain of amino acids arranged in a specific order and folded into a particular shape

Question 9

Which food is most likely to provide a high amount of dietary fiber?

Accepted Answer

Whole grain bread

Question 10

Which of the following is a polymer made from a single type of molecular building block?

Accepted Answer

Starch

Question 11

A student claims that all carbohydrates in the human diet come from sugars. Which statement best corrects this misconception?

Accepted Answer

Most dietary carbohydrates come from starch, not sugars.

Question 12

Which mineral is most important for the formation of bones and teeth?

Accepted Answer

Calcium

Question 13

Which of the following is a disaccharide commonly found in table sugar?

Accepted Answer

Sucrose

Question 14

Which of the following foods is most likely to be a good source of iron?

Accepted Answer

Red meat

Question 15

Which of the following statements about amino acids is TRUE?

Accepted Answer

Proteins are made from 20 different amino acids.

Question 16

Which of the following is a correct statement about the role of cellulose in the human diet?

Accepted Answer

Cellulose provides dietary fiber, aiding digestion.

Question 17

Which of the following is a correct chemical formula for glucose?

Accepted Answer

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

Question 18

Which of the following is a real-life consequence of protein deficiency in the diet?

Accepted Answer

Development of kwashiorkor

Question 19

Which of the following statements about minerals is CORRECT?

Accepted Answer

Minerals such as calcium and iron are essential for bone formation and oxygen transport.

Question 20

A person is advised to increase their intake of phosphorus. Which of the following is a major role of phosphorus in the body?

Accepted Answer

Part of DNA and ATP molecules

Biological Molecules: Carbohydrates, Lipids, Proteins, and Minerals

Study Guide - Practice Questions