1.やさしい
In the scientific name Homo sapiens, what does Homo name?
- AThe kingdom
- BThe genus
- CThe species
- DThe family
2.やさしい
What is an antigen?
- AA molecule that the immune system sees as foreign
- BA drug that kills viruses
- CA protein that carries oxygen
- DA white blood cell that engulfs and digests bacteria
3.やさしい
What is a monomer?
- AA small unit that joins with others to form a polymer
- BAn enzyme that breaks down polymers
- CA molecule that contains no carbon
- DA very large molecule that is made of many smaller units
4.ふつう
ある生徒が、光の量がインゲンマメの成長に与える影響を調べている。制御変数にすべきものはどれか。
- A実験の結論
- B各植物が受け取る水の量
- C各植物が受け取る光の量
- D最後の植物の高さ
5.ふつう
When most people in a community are vaccinated, people who cannot be vaccinated are also protected. Why?
- AThe pathogen mutates into a harmless form
- BThe vaccine spreads from person to person
- CVaccinated people make antibodies for others
- DThe pathogen has too few hosts to spread easily
6.ふつう
What is a bacterial endospore?
- AA reproductive cell that bacteria use to make new colonies quickly
- BA tough, dormant form that survives heat, drying and many disinfectants
- CA small ring of DNA that carries antibiotic resistance genes
- DA hair-like structure used to swim towards food
7.むずかしい
In the Hershey–Chase experiment, viruses were labelled with radioactive phosphorus in their DNA or radioactive sulfur in their protein. Only the phosphorus entered the infected bacteria. What did this show?
- AProtein, not DNA, is the genetic material of the virus
- BViruses contain no DNA at all
- CDNA, not protein, is the genetic material of the virus
- DBacteria take up any radioactive substance
8.むずかしい
In Tay-Sachs disease, a lysosomal enzyme does not work. What happens inside the affected nerve cells?
- AThe DNA cannot be copied before division
- BThe cells can no longer make ATP in their mitochondria
- CThe undigested substance builds up inside lysosomes
- DThe ribosomes stop making proteins
解答
- 1. B · The genus
- 2. A · A molecule that the immune system sees as foreign
- 3. A · A small unit that joins with others to form a polymer
- 4. B · 各植物が受け取る水の量
- 5. D · The pathogen has too few hosts to spread easily
- 6. B · A tough, dormant form that survives heat, drying and many disinfectants
- 7. C · DNA, not protein, is the genetic material of the virus
- 8. C · The undigested substance builds up inside lysosomes
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