Question

1. Which of the following statements is true?

Multiple Choice

• Human cells maintain proper hydration primarily by controlling ions in fluid compartments.

• Humans rely primarily on panting to dissipate excess body heat.

• Most people can tolerate hyperthermia.

• Iron ions are crucial for maintaining cellular fluid balance.

2. Which of the following statements is true?

Multiple Choice

• Drinking lite beer or wine after exercising is an effective way to replace body fluids quickly.

• Most healthy young people can use thirst as a guide to knowing when to drink water.

• Older adults can sense thirst more effectively than young adults.

• While engaging in physical activities, healthy people should consume plenty of water frequently because they are not likely to develop water intoxication.

3. Which of the following statements is true?

Multiple Choice

• Fat cells produce leptin, a hormone that can reduce hunger.

• People with "thrifty" metabolisms burn more fat per hour than other people.

• Ghrelin is an enzyme that breaks down fat in the stomach.

• Satiety is the feeling that drives a person to consume food.

Answer 1

1. ANSWER: Human cells maintain proper hydration primarily by controlling ions in fluid compartments.

Reason: Hydration can be maintained in human body by the movement of ions in the fluid compartments.

2. ANSWER: While engaging in physical activities, drinking plenty of water will not cause water intoxication.

Reason: During physical exercise, body water is lost in the form of sweat which results in dehydration. Hence dronking plenty of water can restore the lost ions in the body.

3. ANSWER: Leptin is a hormone secreted by adipose tissue, reduces hunger.

Reason: Leptin decreases appetite and gherlin increases appetite.