护理入学考试生物练习卷（附答案）

在 DNA 中，腺嘌呤总是与哪种碱基配对？

1. A胸腺嘧啶
2. B胞嘧啶
3. C鸟嘌呤
4. D尿嘧啶

What does sterilisation mean?

1. AKilling only the viruses on a surface
2. BKilling or removing all microorganisms, including spores
3. CReducing the number of microbes on the skin before an injection
4. DWashing away visible dirt with water

What are the three domains of life?

1. ABacteria, Archaea and Eukarya
2. BBacteria, viruses and protists
3. CPlants, animals and fungi
4. DProkaryotes, plants and animals

有氧细胞呼吸的产物是什么？

1. A乳酸和氧气
2. B葡萄糖和氧气
3. C二氧化碳、水和 ATP
4. D淀粉和水

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor marrow contains antibiotics that kill cancer
2. BThe transplant replaces the patient's bones
3. CThe donor red cells divide to make more red cells
4. DThe donor stem cells produce new, healthy blood cells

Why does each type of virus infect only certain kinds of cells?

1. AIt can only enter cells that have no nucleus
2. BIt must find cells with the same DNA as its own
3. CIt must attach to specific receptor proteins on the cell surface
4. DIt can only enter cells that are dividing by meiosis at that time

Fertiliser washes from farmland into a lake. Algae grow rapidly, then die, and later many fish die. What is the main cause of the fish deaths?

1. AThe algae release carbon dioxide that poisons fish
2. BThe fish eat too many algae and become ill
3. CBacteria decomposing the dead algae use up the oxygen
4. DThe fertiliser is directly poisonous to fish

Plants in waterlogged soil take up fewer mineral ions, even when the ions are plentiful. What is the best explanation?

1. AWater dilutes the ions so much that roots cannot detect them
2. BRoot cells lack oxygen, so less ATP is made for active transport
3. CMineral ions only enter by osmosis, and osmosis stops in wet soil
4. DWaterlogged roots carry out more photosynthesis