Question

1. Homeostasis is involved with maintenance of
A. body temperature
B. blood pressure
C. salt concentration
D. all of the above

2. Metabolic water
A. is the water created during oxidation of food
B. is the free water found in even dry seeds
C. is the water lost during digestion of food
D. none of the above

3. Evaporative cooling depends on
A. cool water condensing on the skin's surface
B. high external temperature at 100 percent humidity
C. breaking hydrogen bonds
D. slow moving water leaving the skin's surface

4. One liter of air at internal body temperature (38 Degrees C) and 100 percent relative humidity contains about
A. 96 mg of water
B. 54 mg of water
C. 46 mg of water
D. 23 mg of water

5. One liter of air at room temperature (25 degrees C) and 100 percent relative humidity contains about
A. 96 mg of water
B. 54 mg of water
C. 46 mg of water
D. 23 mg of water

Answer 1

Answer 1- D) all of the above.

Reason- Homeostasis is a state of body with internal, physical, and chemical environment maintained at equilibrium inside the body. Such processes include maintaining body temperature, fluid balance, etc.

Answer 2- A) is the water created during oxidation of food

Reason- it refers to the water produced through the process of metabolism inside a living organism. It occurs by the oxidation of energy-source substances in the food.

Answer 3- B) high external temperature at 100 percent humidity.

Reason- The cooling effect of evaporation requires the very large surface area and depends upon the ambient temperature and relative humidity.

Answer 4- D) 23 mg of water

Answer 5- D) 23 mg of water

Reason- when the temperature is 25°C and the relative humidity is 100% , then it contains 22 grams of water,