1.简单
葡萄糖是哪类分子的例子?
- A单糖
- B多糖
- C脂质
- D蛋白质
2.简单
下列哪一种是真菌?
- A变形虫
- B酵母
- C流感病毒
- D大肠杆菌(Escherichia coli)
3.简单
Where in the cell does glycolysis take place?
- AIn the cytoplasm
- BIn the mitochondrial matrix
- CIn the chloroplast
- DIn the nucleus
4.中等
In disease spread, what is a vector?
- AAn organism that carries a pathogen between hosts
- BA blood test used to detect antibodies
- CA medicine that destroys a pathogen in the body
- DThe first person to catch a disease
5.中等
实验结果与假设的预测相符。最恰当的结论是什么?
- A再也不需要进一步的实验
- B该假设在所有情况下都被证明为真
- C该假设现在成了自然定律
- D假设得到支持,但没有被证明
6.中等
How can bacteria pass antibiotic-resistance genes directly to other bacteria?
- ABy mitosis, sharing copies of their chromosomes with neighbours
- BBy conjugation, transferring plasmids through a pilus
- CBy meiosis, forming gametes with new alleles
- DBy osmosis, moving genes in water
7.困难
一台光学显微镜的目镜为 10×,物镜为 40×。总放大倍数是多少?
- A4000×
- B400×
- C40×
- D50×
8.困难
A patient is given a large volume of hypotonic IV fluid too quickly. What is the most likely effect on the patient's cells?
- AWater moves out of the cells, and they shrink
- BSalt moves into the cells, and they burst
- CWater moves into the cells, and they swell
- DNothing changes, because cells are not affected by IV fluid
答案
- 1. A · 单糖
- 2. B · 酵母
- 3. A · In the cytoplasm
- 4. A · An organism that carries a pathogen between hosts
- 5. D · 假设得到支持,但没有被证明
- 6. B · By conjugation, transferring plasmids through a pilus
- 7. B · 400×
- 8. C · Water moves into the cells, and they swell
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