护理入学考试生物练习卷（附答案）

In which form do animals store glucose in the liver and muscles?

1. AChitin
2. BStarch
3. CCellulose
4. DGlycogen

DNA 分子是什么形状？

1. A平面环
2. B双螺旋
3. C单条直链
4. D三螺旋

What do bacteria use flagella for?

1. AMaking proteins from amino acids
2. BCopying their DNA
3. CMoving from place to place
4. DStoring food

How does facilitated diffusion differ from active transport?

1. AIt needs ATP and moves substances against their gradient
2. BIt works without any membrane proteins
3. CIt needs no energy and moves substances down their gradient
4. DIt moves only water and no other substances

Which DNA bases are purines?

1. AAdenine and guanine
2. BAdenine and thymine
3. CCytosine and guanine
4. DCytosine and thymine

正常的人类卵细胞含有多少条染色体？

1. A23
2. B22
3. C46
4. D92

A nurse notices that patients who used a new mouthwash had few mouth infections. No other patients were studied. What is most needed before concluding that the mouthwash works?

1. AA survey asking patients if they liked it
2. BA larger bottle of the same mouthwash for each patient
3. CA comparable group that does not use the mouthwash
4. DA longer explanation in the report

An inhibitor binds to an enzyme away from the active site and changes the enzyme's shape. Adding more substrate does not restore the rate. What type of inhibition is this?

1. ADenaturation by heat
2. BNoncompetitive inhibition
3. CCompetitive inhibition
4. DSubstrate saturation