1.やさしい
What is the active site of an enzyme?
- AThe product formed by the reaction
- BThe gene that codes for the enzyme
- CThe part of the cell where the enzyme is made
- DThe region where the substrate binds
2.やさしい
In science, what is an observation?
- AInformation gathered with the senses or instruments
- BA guess about why something happens
- CA rule that explains all known facts
- DA conclusion drawn before any data are collected
3.やさしい
What are cilia?
- AShort hair-like projections that beat in waves
- BSmall round sacs that hold digestive enzymes
- CFolds of the inner mitochondrial membrane that make ATP
- DOpenings in the nuclear envelope
4.ふつう
What do nitrogen-fixing bacteria do?
- AThey convert nitrogen gas into compounds that plants can use
- BThey release nitrogen gas from dead organisms into the air
- CThey break down proteins into glucose
- DThey turn carbon dioxide into sugar
5.ふつう
好気呼吸の生成物は何か。
- A二酸化炭素、水、ATP
- B乳酸と酸素
- Cグルコースと酸素
- Dデンプンと水
6.ふつう
グラム染色で、グラム陽性菌が紫に染まるのはなぜか。
- A厚いペプチドグリカンの細胞壁が紫の色素を保持するから
- B薄い細胞壁が、脂質に富む外膜で覆われているから
- C細胞壁がまったくないから
- Dクロロフィルをもつから
7.むずかしい
After a meal, blood glucose rises. Which response brings it back to normal?
- AThe liver stops storing glycogen and releases more glucose
- BThe kidneys release insulin into the urine
- CThe pancreas releases insulin, and cells take up glucose
- DThe pancreas releases glucagon, and the liver releases glucose
8.むずかしい
減数分裂のとき、1 対の染色体が分離しなかった。何が起こりうるか。
- A親細胞と遺伝的に同一の配偶子ができる
- BDNAをまったく含まない配偶子ができる
- C染色体が 1 本多い、または 1 本足りない配偶子ができる
- D各染色体の遺伝子がちょうど 2 倍になった配偶子ができる
解答
- 1. D · The region where the substrate binds
- 2. A · Information gathered with the senses or instruments
- 3. A · Short hair-like projections that beat in waves
- 4. A · They convert nitrogen gas into compounds that plants can use
- 5. A · 二酸化炭素、水、ATP
- 6. A · 厚いペプチドグリカンの細胞壁が紫の色素を保持するから
- 7. C · The pancreas releases insulin, and cells take up glucose
- 8. C · 染色体が 1 本多い、または 1 本足りない配偶子ができる
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