1.やさしい
What is an organism's genotype?
- AThe traits that can be seen or measured
- BThe environment in which it lives
- CThe alleles it carries for a trait
- DThe number of cells in its body
2.やさしい
What is activation energy?
- AThe heat released when a reaction finishes
- BThe energy stored in a molecule of ATP
- CThe energy needed to start a chemical reaction
- DThe energy plants take in from sunlight
3.やさしい
In biology, what is a clone?
- AA genetically identical copy of an organism, cell or gene
- BAn offspring of two different parents
- CA cell with an extra chromosome
- DAn organism that carries genes from two different species
4.ふつう
ほとんどの酵素は、非常に高い温度でなぜはたらかなくなるか。
- A酵素が変性し、活性部位の形が変わるから
- B基質が別の酵素に変わるから
- C熱で酵素がたちまちアミノ酸に分かれるから
- D酵素の動きが遅すぎて基質に出会えないから
5.ふつう
A thermometer gives readings of 36.1, 36.1 and 36.2 °C for a water bath that is really at 37.0 °C. How are these readings best described?
- ANeither accurate nor precise
- BPrecise but not accurate
- CBoth accurate and precise
- DAccurate but not precise
6.ふつう
「2倍体」とはどういう意味か。
- A細胞に核がない
- B細胞が 1 組の染色体をもつ
- C細胞が 2 組の染色体をもつ
- D細胞が 1 回しか分裂できない
7.むずかしい
膵臓の細胞は、大量の消化酵素をつくって分泌する。特に発達していると考えられる細胞小器官はどれか。
- A葉緑体と細胞壁
- B粗面小胞体とゴルジ体
- Cリソソームと細胞壁
- D滑面小胞体、葉緑体、大きな液胞
8.むずかしい
A pesticide that is not broken down is sprayed on crops. Later, hawks at the top of the food chain have much higher levels of it than the insects. Why?
- AThe pesticide is broken down faster in insects than in plants
- BEach predator eats many prey, so the pesticide builds up at each level
- CHawks eat the crops directly, so they take in the most pesticide of all
- DHawks make the pesticide in their own bodies
解答
- 1. C · The alleles it carries for a trait
- 2. C · The energy needed to start a chemical reaction
- 3. A · A genetically identical copy of an organism, cell or gene
- 4. A · 酵素が変性し、活性部位の形が変わるから
- 5. B · Precise but not accurate
- 6. C · 細胞が 2 組の染色体をもつ
- 7. B · 粗面小胞体とゴルジ体
- 8. B · Each predator eats many prey, so the pesticide builds up at each level
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