1.やさしい
What does sterilisation mean?
- AKilling only the viruses on a surface
- BReducing the number of microbes on the skin before an injection
- CKilling or removing all microorganisms, including spores
- DWashing away visible dirt with water
2.やさしい
Which organelle makes lipids and helps break down drugs and toxins in liver cells?
- ASmooth endoplasmic reticulum
- BCentriole
- CNucleolus
- DRough endoplasmic reticulum
3.やさしい
What is the main role of the cytoskeleton?
- AIt gives the cell its shape and helps it move
- BIt stores the genetic code of the cell
- CIt joins amino acids into proteins
- DIt controls which substances enter the cell
4.ふつう
What happens to an enzyme after it has catalysed a reaction?
- AIt becomes part of the product and leaves with it
- BIt is broken down into amino acids
- CIt changes into the substrate
- DIt is released unchanged and can be used again
5.ふつう
Researchers randomly assign patients to receive either a new wound dressing or the standard dressing and compare healing times. What type of study is this?
- AAn observational study
- BA case report
- CA controlled experiment
- DA survey
6.ふつう
What is a chromosomal translocation?
- AA piece of a chromosome is flipped around in place
- BOne DNA base is replaced by another base
- CA piece of a chromosome is copied twice and stays in the same place
- DA piece of one chromosome attaches to a non-matching chromosome
7.むずかしい
A linear DNA molecule is fully cut by a restriction enzyme, giving fragments of 500, 300 and 200 base pairs. How long was the original molecule?
- A300 base pairs
- B500 base pairs
- C1500 base pairs
- D1000 base pairs
8.むずかしい
膵臓の細胞は、大量の消化酵素をつくって分泌する。特に発達していると考えられる細胞小器官はどれか。
- Aリソソームと細胞壁
- B滑面小胞体、葉緑体、大きな液胞
- C葉緑体と細胞壁
- D粗面小胞体とゴルジ体
解答
- 1. C · Killing or removing all microorganisms, including spores
- 2. A · Smooth endoplasmic reticulum
- 3. A · It gives the cell its shape and helps it move
- 4. D · It is released unchanged and can be used again
- 5. C · A controlled experiment
- 6. D · A piece of one chromosome attaches to a non-matching chromosome
- 7. D · 1000 base pairs
- 8. D · 粗面小胞体とゴルジ体
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