1.やさしい
What does it mean that a cell membrane is selectively permeable?
- AIt lets some substances cross but not others
- BIt lets only water molecules cross
- CIt lets no substance cross at all
- DIt lets every substance cross freely in both directions
2.やさしい
科学的方法において、仮説とは何か。
- A行った測定値の一覧
- B正しいと証明された結論
- C多くの実験によって裏付けられた広範な説明
- D検証できる説明または予測
3.やさしい
In genetics, what is a carrier?
- AA person with one recessive allele for a disorder but no symptoms
- BA person with two recessive alleles who has the disorder
- CA person who has a dominant disorder
- DA person who has lost both alleles for the gene, so shows no trait
4.ふつう
Which of these is part of the body's innate (non-specific) defence?
- AT cells that recognise one virus
- BAntibodies made after vaccination
- CThe skin and stomach acid
- DMemory B cells from an earlier infection
5.ふつう
How do embryonic stem cells differ from most adult stem cells?
- AThey are found only in plants, while adult stem cells are found in animals
- BThey can no longer divide, while adult stem cells divide quickly
- CThey are haploid, while adult stem cells are diploid
- DThey can become almost any cell type, while adult stem cells are more limited
6.ふつう
The genetic code is described as nearly universal. What does this mean?
- AAll organisms have the same number of chromosomes in their cells
- BEvery cell in the body makes the same proteins
- CThe same codons mean the same amino acids in nearly all organisms
- DAll organisms have exactly the same genes
7.むずかしい
体細胞分裂と減数分裂を正しく比べているのはどれか。
- Aどちらも、生殖のために親細胞の半分の染色体数の配偶子をつくる
- B体細胞分裂は分裂が 2 回あり、同一の 4 つの細胞ができる
- C減数分裂は分裂が 2 回あり、遺伝的に異なる 4 つの半数体細胞ができる
- D減数分裂は、親と同一の 2 つの細胞をつくる
8.むずかしい
Why do phospholipids arrange themselves into a double layer in water?
- AThey are fully soluble in water
- BTheir heads are hydrophilic and their tails are hydrophobic
- CTheir heads are hydrophobic and their tails are hydrophilic
- DThey carry a strong positive charge on both ends
解答
- 1. A · It lets some substances cross but not others
- 2. D · 検証できる説明または予測
- 3. A · A person with one recessive allele for a disorder but no symptoms
- 4. C · The skin and stomach acid
- 5. D · They can become almost any cell type, while adult stem cells are more limited
- 6. C · The same codons mean the same amino acids in nearly all organisms
- 7. C · 減数分裂は分裂が 2 回あり、遺伝的に異なる 4 つの半数体細胞ができる
- 8. B · Their heads are hydrophilic and their tails are hydrophobic
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