护理入学考试生物练习卷（附答案）

光合作用发生在哪种细胞器中？

1. A高尔基体
2. B叶绿体
3. C细胞核
4. D线粒体

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

1. AGlycogen
2. BStarch
3. CCellulose
4. DChitin

What is a monosaccharide?

1. AA single sugar unit, such as glucose
2. BA chain of many amino acids
3. CTwo sugars joined together, such as sucrose
4. DA fat made of glycerol and fatty acids

Which stage of aerobic respiration produces the most ATP?

1. AThe electron transport chain
2. BFermentation
3. CGlycolysis in the cytoplasm
4. DThe Krebs cycle in the matrix

When most people in a community are vaccinated, people who cannot be vaccinated are also protected. Why?

1. AVaccinated people make antibodies for others
2. BThe vaccine spreads from person to person
3. CThe pathogen has too few hosts to spread easily
4. DThe pathogen mutates into a harmless form

What happens in the lytic cycle of a virus?

1. AThe host cell makes antibodies against the virus
2. BThe viral DNA joins the host DNA and stays inactive for a long time
3. CThe virus makes many copies in the host cell, which then bursts
4. DThe virus divides by binary fission outside the cell

A green plant is kept in a sealed jar in complete darkness for a day. What happens to the carbon dioxide level in the jar?

1. AIt stays the same, because plants do not respire
2. BIt rises, because the plant respires but cannot photosynthesise
3. CIt falls, because the plant keeps photosynthesising
4. DIt falls, because plants take in more CO₂ when they respire in the dark

A study finds that coffee drinkers have more lung cancer. Later it is found that coffee drinkers in the study also smoked more. What is smoking in this study?

1. AA placebo
2. BA confounding variable
3. CThe dependent variable
4. DThe control group