Q: Which of the following equations best represents the process by which chemical energy from food is converted to ATP in animals?

$$\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{ATP}$$

Question 1

Which of the following is NOT a requirement for an animal’s diet to be considered adequate?

Accepted Answer

It must contain only plant-based sources of nutrients.

Question 2

A diet lacking in which mineral would most likely result in impaired bone growth and loss of bone mass?

Accepted Answer

Calcium

Question 3

Which vitamin is required for the production of connective tissue and its deficiency leads to scurvy?

Accepted Answer

Ascorbic acid (Vitamin C)

Question 4

Why are only some amino acids considered 'essential' in animal diets?

Accepted Answer

Animals can synthesize some amino acids, but must obtain others from their diet.

Question 5

Which of the following best explains why vitamins are required in very small amounts?

Accepted Answer

Vitamins act as coenzymes and cofactors, and are not consumed in the reactions they facilitate.

Question 6

A vegetarian diet can provide all essential amino acids by:

Accepted Answer

Eating a varied diet of plant proteins that complement each other.

Question 7

Which essential fatty acid is required by mammals and is typically obtained from seeds, grains, and vegetables?

Accepted Answer

Linoleic acid

Question 8

A child who switches from breast milk to a diet consisting mainly of rice is at risk for which nutritional deficiency?

Accepted Answer

Protein deficiency due to lack of essential amino acids

Question 9

Which mineral is incorporated into hemoglobin and is essential for oxygen transport in the blood?

Accepted Answer

Iron

Question 10

If an animal is eating ample food but shows signs of malnutrition, what is the most logical first step for a researcher to determine the cause?

Accepted Answer

Analyze the diet for missing essential nutrients.

Question 11

Which vitamin is required for blood clotting and is produced by colon bacteria?

Accepted Answer

Vitamin K

Question 12

A deficiency in which mineral can lead to goiter (enlarged thyroid gland)?

Accepted Answer

Iodine

Question 13

Which of the following equations best represents the process by which chemical energy from food is converted to ATP in animals?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O} + 	ext{ATP}$$

Question 14

Which scenario best illustrates opportunistic feeding in animals?

Accepted Answer

A deer eating insects and bird eggs when plants are scarce.

Question 15

Which of the following is a plausible explanation for why the frequency of neural tube defects was higher in the experimental group of the Smithells study compared to the general population after folic acid supplementation became standard?

Accepted Answer

The experimental group consisted of individuals with a history of neural tube defects, increasing their baseline risk.

Question 16

Which of the following symptoms would most likely result from a deficiency in vitamin A?

Accepted Answer

Blindness and skin disorders

Question 17

A juvenile chamois is observed licking salts from rocks in its alpine habitat. What is the most likely reason for this behavior?

Accepted Answer

To obtain essential minerals lacking in its plant-based diet.

Question 18

Which of the following statements about fat-soluble vitamins is TRUE?

Accepted Answer

Excesses are stored in body fat and can accumulate to toxic levels.

Question 19

Which mineral is important for maintaining osmotic balance and nerve function, and is often consumed in excess in the United States?

Accepted Answer

Sodium

Question 20

Which vitamin is converted in the body to FAD, a coenzyme used in cellular respiration?

Accepted Answer

Vitamin B2 (riboflavin)

Animal Nutrition: Essential Nutrients and Dietary Requirements

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