1.やさしい
What is the main role of carbohydrates in the human diet?
- ATo build muscle tissue
- BTo provide a quick source of energy
- CTo form antibodies
- DTo carry the body's genetic information
2.やさしい
What does DNA replication produce?
- ATwo identical DNA molecules
- BA new protein
- CFour different DNA molecules
- DOne mRNA molecule
3.やさしい
表現型とは何か。
- A配偶子に含まれる染色体の数
- B遺伝子の塩基の並び順
- C生物がある遺伝子について持つ対立遺伝子の組
- D目の色のような、観察できる形質
4.ふつう
Which statement best describes biological evolution?
- AGrowth of an organism from a single zygote to a fully grown adult
- BMovement of animals to a new habitat each year
- CChange in the inherited traits of a population over generations
- DChange in the body of one organism during its lifetime
5.ふつう
赤緑色覚異常が女性より男性に多いのはなぜか。
- A男性はX染色体が 1 本なので、対立遺伝子が 1 つあれば十分だから
- B女性は父親からその対立遺伝子を受け継げないから
- Cその対立遺伝子はY染色体上にあるから
- Dその対立遺伝子は男性では優性、女性では劣性だから
6.ふつう
How can bacteria pass antibiotic-resistance genes directly to other bacteria?
- ABy osmosis, moving genes in water
- BBy meiosis, forming gametes with new alleles
- CBy mitosis, sharing copies of their chromosomes with neighbours
- DBy conjugation, transferring plasmids through a pilus
7.むずかしい
A karyotype shows 45 chromosomes, with a single X chromosome and no Y. Which condition is this?
- AKlinefelter syndrome
- BDown syndrome
- CTurner syndrome
- DA typical male karyotype
8.むずかしい
Why do cells get far more ATP from glucose when oxygen is present than when it is absent?
- AWithout oxygen, glucose cannot enter the cell or be broken down at all
- BWithout oxygen the Krebs cycle runs faster but makes less ATP
- COxygen itself is converted into ATP in the mitochondria
- DWithout oxygen only glycolysis runs, giving a net of 2 ATP per glucose
解答
- 1. B · To provide a quick source of energy
- 2. A · Two identical DNA molecules
- 3. D · 目の色のような、観察できる形質
- 4. C · Change in the inherited traits of a population over generations
- 5. A · 男性はX染色体が 1 本なので、対立遺伝子が 1 つあれば十分だから
- 6. D · By conjugation, transferring plasmids through a pilus
- 7. C · Turner syndrome
- 8. D · Without oxygen only glycolysis runs, giving a net of 2 ATP per glucose
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