Thursday SAT question

When you loose water, your blood becomes more concentrated. Think about how you make a powered drink, such as lemonade. If you use the same amount of powdered drink in 1 liter of water as you do in 2 liters of water, the drinks will taste different. The lemonade made with 1 liter of water will be stronger because it is more concentrated. Losing water through sweating causes potassium and sodium to be more concentrated in the blood. The kidneys force the extra potassium out of the blood stream into the nephrons. From the nephrons, the potassium is eliminated from the body in the urine.

1. The word more concentrated in the kidney refer to

a. the same amount of water with different amounts of material dissolved in it

b. small amounts of material dissolved in samll amounts of water

c. large amounts of material dissolved in large amounts of water

d. a given amount of material dissolved in a smaller amount of water

2. Which of the following statements is a fact from the passage?

a. blood contains both potassium and sodium

b. losing too much sodium is dangerous

c. potassium and sodium can be replaced by drinking an excecise drink

d. rears contain sodium

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