1.やさしい
What does DNA replication produce?
- AA new protein
- BOne mRNA molecule
- CFour different DNA molecules
- DTwo identical DNA molecules
2.やさしい
What is the main material in the cell walls of fungi?
- APeptidoglycan
- BChitin
- CCollagen
- DCellulose
3.やさしい
What does the polymerase chain reaction (PCR) do?
- AIt turns RNA into protein
- BIt makes many copies of a piece of DNA
- CIt cuts DNA at specific sequences
- DIt separates proteins by their charge
4.ふつう
In a eukaryotic cell, where does transcription take place?
- AIn the lysosomes
- BIn the Golgi apparatus
- COn ribosomes in the cytoplasm
- DIn the nucleus
5.ふつう
相同染色体どうしの乗換えが起こるのはいつか。
- A減数分裂の第一分裂前期
- B体細胞分裂の後期
- C減数分裂の第二分裂終期
- D間期のS期
6.ふつう
細菌は通常どのように増殖するか。
- A二分裂による
- Bウイルスを出芽させることによる
- C減数分裂による
- D種子をつくることによる
7.むずかしい
Cells lining the small intestine have tiny finger-like folds of membrane called microvilli. What does this tell you about their job?
- AThey protect the gut from bacteria by producing mucus
- BThey move food along by beating like cilia
- CThey absorb substances, so they need a large surface area
- DThey make digestive enzymes in large amounts
8.むずかしい
A cell is 0.00002 m wide. Which value is equal to this width?
- A200 µm
- B0.2 mm
- C20 µm
- D2 µm
解答
- 1. D · Two identical DNA molecules
- 2. B · Chitin
- 3. B · It makes many copies of a piece of DNA
- 4. D · In the nucleus
- 5. A · 減数分裂の第一分裂前期
- 6. A · 二分裂による
- 7. C · They absorb substances, so they need a large surface area
- 8. C · 20 µm
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