1.やさしい
What does DNA replication produce?
- AFour different DNA molecules
- BA new protein
- COne mRNA molecule
- DTwo identical DNA molecules
2.やさしい
In which stage of the cell cycle does a cell spend most of its time?
- AMetaphase
- BInterphase
- CProphase
- DAnaphase
3.やさしい
タンパク質の構成単位(単量体)は何か。
- Aアミノ酸
- B単糖
- Cヌクレオチド
- D脂肪酸
4.ふつう
What does Mendel's law of segregation state?
- AThe two alleles of a gene separate so each gamete gets only one
- BGenes on different chromosomes are always inherited together
- CDominant alleles are more common in a population than recessive ones
- DEach gamete receives both alleles of every gene
5.ふつう
What do the spindle fibres do during cell division?
- AThey copy the DNA of each chromosome before the cell divides
- BThey digest the old cell membrane
- CThey make the new nuclear envelope
- DThey attach to chromosomes and move them to the poles
6.ふつう
What is the role of oxygen in aerobic respiration?
- AIt breaks pyruvate into lactic acid
- BIt is built into glucose molecules
- CIt is split to release the energy needed for glycolysis
- DIt accepts electrons at the end of the transport chain
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?
- AViruses contain no DNA at all
- BProtein, not DNA, is the genetic material of the virus
- CDNA, not protein, is the genetic material of the virus
- DBacteria take up any radioactive substance
8.むずかしい
At 100× total magnification, the field of view of a microscope is 2 mm wide. What is its width at 400×?
- A8 mm
- B2 mm
- C0.5 mm
- D0.2 mm
解答
- 1. D · Two identical DNA molecules
- 2. B · Interphase
- 3. A · アミノ酸
- 4. A · The two alleles of a gene separate so each gamete gets only one
- 5. D · They attach to chromosomes and move them to the poles
- 6. D · It accepts electrons at the end of the transport chain
- 7. C · DNA, not protein, is the genetic material of the virus
- 8. C · 0.5 mm
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