1.やさしい
What does phloem carry in a plant?
- ASugars made in the leaves
- BChlorophyll to the stem
- CWater from the roots only
- DCarbon dioxide from the air
2.やさしい
Which group of biomolecules forms the basic bilayer of the cell membrane and also stores long-term energy?
- ACarbohydrates
- BNucleic acids
- CProteins
- DLipids
3.やさしい
What is a Punnett square used for?
- ACounting the chromosomes in a cell
- BMeasuring the size of a cell
- CShowing the order of genes on a chromosome
- DPredicting the possible genotypes of offspring
4.ふつう
コドンとは何か。
- Aタンパク質を指定する 1 つの塩基
- B体細胞分裂で紡錘糸が付着する染色体の部分
- C転写を開始させるタンパク質
- D1 つのアミノ酸を指定する、mRNAの 3 つの塩基の組
5.ふつう
In a food chain, which organisms are the producers?
- APlants and algae that make food by photosynthesis
- BAnimals that eat only plants, such as rabbits and deer
- CPredators at the top of the chain
- DFungi that break down dead material
6.ふつう
In gel electrophoresis, why does DNA move towards the positive electrode?
- ADNA has no charge and moves at random
- BDNA has a negative charge from its phosphate groups
- CDNA is pulled by gravity through the gel
- DDNA has a positive charge from the nitrogen bases it contains
7.むずかしい
DNA試料にアデニンが 30% 含まれている。塩基のうち、グアニンは何パーセントか。
- A30%
- B70%
- C20%
- D40%
8.むずかしい
In Tay-Sachs disease, a lysosomal enzyme does not work. What happens inside the affected nerve cells?
- AThe cells can no longer make ATP in their mitochondria
- BThe undigested substance builds up inside lysosomes
- CThe ribosomes stop making proteins
- DThe DNA cannot be copied before division
解答
- 1. A · Sugars made in the leaves
- 2. D · Lipids
- 3. D · Predicting the possible genotypes of offspring
- 4. D · 1 つのアミノ酸を指定する、mRNAの 3 つの塩基の組
- 5. A · Plants and algae that make food by photosynthesis
- 6. B · DNA has a negative charge from its phosphate groups
- 7. C · 20%
- 8. B · The undigested substance builds up inside lysosomes
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