护理入学考试生物练习卷（附答案）

蛋白质的构成单元（单体）是什么？

1. A核苷酸
2. B单糖
3. C脂肪酸
4. D氨基酸

What does it mean that a cell membrane is selectively permeable?

1. AIt lets some substances cross but not others
2. BIt lets no substance cross at all
3. CIt lets every substance cross freely in both directions
4. DIt lets only water molecules cross

What is the single most important way to prevent the spread of infection in hospitals?

1. AGiving every patient antibiotics
2. BWearing a hair net
3. COpening the windows
4. DHand hygiene

Why is water good at dissolving salts and sugars?

1. AIt has a very low boiling point
2. BIts molecules are polar
3. CIt contains carbon atoms
4. DIts molecules are nonpolar

Why is a buffer system important in blood?

1. AIt makes the blood clot faster
2. BIt resists changes in pH
3. CIt carries oxygen to the tissues
4. DIt raises the blood glucose level

What does it mean that a person's blood is Rh negative?

1. ATheir red cells lack the RhD antigen
2. BTheir red cells lack the A and B antigens
3. CTheir plasma has no antibodies at all
4. DTheir red cells carry extra RhD antigen

The lion is Panthera leo, the tiger is Panthera tigris and the house cat is Felis catus. Which two are most closely related?

1. AThe lion and the tiger
2. BThe lion and the house cat
3. CThe tiger and the house cat
4. DAll three are equally related

A patient with type A blood is given type B red blood cells by mistake. What is the cause of the reaction that follows?

1. AAnti-A antibodies on the donor cells attack the patient's plasma
2. BThe donor's B antigens destroy the patient's white blood cells
3. CThe patient's A antigens dissolve the donor's haemoglobin
4. DAnti-B antibodies in the patient's plasma attack the donor cells