1.やさしい
What does xylem carry in a plant?
- ASeeds from the flowers to the soil
- BSugars from the leaves to the roots
- COxygen from the leaves to the roots
- DWater and minerals from the roots upward
2.やさしい
Which sugar is found in DNA?
- AFructose
- BDeoxyribose
- CGlucose
- DRibose
3.やさしい
Which molecules, made by immune cells, bind to specific antigens?
- AEnzymes
- BPhospholipids
- CHormones
- DAntibodies
4.ふつう
Where does the Krebs (citric acid) cycle take place in a eukaryotic cell?
- AOn the rough endoplasmic reticulum
- BIn the cytoplasm
- CIn the nucleus
- DIn the mitochondrial matrix
5.ふつう
During which division of meiosis do homologous chromosomes separate?
- ABoth meiosis I and meiosis II
- BMeiosis II
- CMeiosis I
- DNeither, because they separate in mitosis
6.ふつう
Which process removes carbon dioxide from the atmosphere?
- ABurning fossil fuels
- BPhotosynthesis
- CCellular respiration
- DDecomposition
7.むずかしい
Why can standard DNA profiling not tell identical twins apart?
- AIdentical twins have no non-coding DNA
- BIdentical twins come from one zygote and have the same DNA
- COnly one twin inherits the father's DNA
- DTwins always share the same fingerprints on their hands
8.むずかしい
ペプシンは、pHが約 2 の胃ではたらく。pHが約 8 の小腸では、その活性はどうなるか。
- ApHは酵素に影響しないため、変わらない
- B酵素はアルカリ性の条件を好むため、上昇する
- C脂肪を消化する別の酵素に変わる
- D最適pHから大きく離れるため、低下する
解答
- 1. D · Water and minerals from the roots upward
- 2. B · Deoxyribose
- 3. D · Antibodies
- 4. D · In the mitochondrial matrix
- 5. C · Meiosis I
- 6. B · Photosynthesis
- 7. B · Identical twins come from one zygote and have the same DNA
- 8. D · 最適pHから大きく離れるため、低下する
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