1.简单
对照组的目的是什么?
- A接受所检验处理的最大可能剂量
- B使实验更快结束
- C为与处理组比较提供基线
- D取代提出假设的需要
2.简单
What is a tissue?
- AA structure inside a cell
- BSeveral organs that work together
- CA group of similar cells that work together
- DA single cell that has one special job in the body
3.简单
What does sterilisation mean?
- AWashing away visible dirt with water
- BKilling or removing all microorganisms, including spores
- CReducing the number of microbes on the skin before an injection
- DKilling only the viruses on a surface
4.中等
剧烈运动时,肌肉细胞缺氧。它们改由葡萄糖产生什么?
- A乳酸(乳酸盐)和少量 ATP
- B糖原和水
- C大量 ATP 和氧气
- D酒精和二氧化碳
5.中等
When plotting the results of an experiment, which variable usually goes on the y-axis?
- AThe dependent variable
- BThe controlled variable
- CThe time the experiment started
- DThe independent variable
6.中等
Why must human gametes be haploid?
- ASo that the gametes can divide quickly by mitosis
- BSo that the zygote has twice the normal number of chromosomes
- CSo that the zygote has the normal number of 46 chromosomes
- DSo that the gametes can make more proteins
7.困难
A new infectious agent passes through filters that trap bacteria, does not grow on nutrient agar and multiplies only inside living cells. What is it most likely to be?
- AA protozoan
- BA fungus
- CA bacterium
- DA virus
8.困难
A man with an X-linked recessive disorder (XʰY) has children with a woman who has two normal alleles (XᴴXᴴ). What is expected among their children?
- AAll daughters are carriers, and no sons are affected
- BHalf of the sons and half of the daughters are affected
- CAll daughters are affected, and all sons are carriers
- DAll sons are affected, and no daughters are carriers
答案
- 1. C · 为与处理组比较提供基线
- 2. C · A group of similar cells that work together
- 3. B · Killing or removing all microorganisms, including spores
- 4. A · 乳酸(乳酸盐)和少量 ATP
- 5. A · The dependent variable
- 6. C · So that the zygote has the normal number of 46 chromosomes
- 7. D · A virus
- 8. A · All daughters are carriers, and no sons are affected
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