Question

16 multiple choice 2 points
what is the most efficient way to store a large amount of energy long-term?
fat
protein
carbohydrates
atp

17 multiple choice 2 points
which of the following statements is true about the solubility of gases in liquid?
only vaporized gases exert partial pressure.
partial pressures of vaporized and dissolved gases will be equal at equilibrium.
the partial pressure of a gas will not affect the amount that goes into solution.
gas molecules never dissolve in a liquid.

18 multiple choice 2 points
_____ is a digestive process that describes a wave-like contraction that propels food through the digestive tract, while _____
intestines, primarily by back-and-forth movements.
segmentation, peristalsis
mastication, inspiration
peristalsis, segmentation

Explanation:

Analyze Question 16

• Lipids (fats) yield approximately \(9\text{ kcal/g}\), whereas carbohydrates and proteins yield approximately \(4\text{ kcal/g}\).
• Fats are hydrophobic and stored without water, making them the most efficient long-term energy storage.

Analyze Question 17

• Henry's Law states that at equilibrium, the partial pressure of a gas in the vapor phase is equal to the partial pressure (or tension) of the dissolved gas in the liquid phase.
• Therefore, the partial pressures of vaporized and dissolved gases will be equal at equilibrium.

Analyze Question 18

• Peristalsis is the wave-like muscular contraction that propels food forward through the digestive tract.
• Segmentation involves localized, back-and-forth contractions that mix food in the intestines.

Answer:

Question 16

• fat (Correct answer)
• protein
• carbohydrates
• ATP

Question 17

• Only vaporized gases exert partial pressure.
• Partial pressures of vaporized and dissolved gases will be equal at equilibrium. (Correct answer)
• The partial pressure of a gas will not affect the amount that goes into solution.
• Gas molecules never dissolve in a liquid.

Question 18

• Segmentation, peristalsis
• Mastication, inspiration
• Peristalsis, segmentation (Correct answer)