护理入学考试生物练习卷（附答案）

What is the active site of an enzyme?

1. AThe region where the substrate binds
2. BThe product formed by the reaction
3. CThe part of the cell where the enzyme is made
4. DThe gene that codes for the enzyme

What is peer review?

1. ARepeating your own experiment many times
2. BAsking patients for their opinion of a treatment
3. CExperts checking a study before it is published
4. DReading a textbook to learn a topic

溶酶体有什么作用？

1. A用氨基酸合成蛋白质
2. B储存细胞的遗传信息
3. C为细胞捕获光能
4. D消化废物和磨损的部件

What causes cohesion between water molecules?

1. AMagnetic forces between hydrogen atoms
2. BCovalent bonds between neighbouring molecules
3. CHydrogen bonds between neighbouring molecules
4. DIonic bonds between oxygen atoms

In a eukaryotic cell, where does transcription take place?

1. AIn the Golgi apparatus
2. BIn the lysosomes
3. CIn the nucleus
4. DOn ribosomes in the cytoplasm

酶是如何加快化学反应的？

1. A给产物增加能量
2. B提高细胞的温度
3. C降低活化能
4. D作为反应物被消耗

Some viruses are surrounded by a lipid envelope taken from the host cell's membrane. Why are these viruses usually inactivated easily by soap and alcohol?

1. ASoap and alcohol break up the lipid envelope
2. BSoap and alcohol dissolve the viral DNA directly
3. CEnveloped viruses have no proteins at all
4. DThe envelope is made of chitin, which soap digests

A plant that is AaBb is crossed with an AaBB plant. A and B are dominant, and the genes assort independently. What fraction of the offspring show both dominant traits?

1. A9/16
2. B1/2
3. C1/4
4. D3/4