1.쉬움
사람의 일반적인 체세포에는 염색체가 몇 개 있나요?
- A23개
- B46개
- C92개
- D44개
2.쉬움
How many micrometres (µm) are in one millimetre?
- A100
- B1000
- C10
- D1 000 000
3.쉬움
Which bonds hold the two strands of a DNA double helix together?
- AIonic bonds between the phosphates
- BPeptide bonds between the sugars
- CDisulfide bonds between the bases
- DHydrogen bonds between the bases
4.보통
Why must human gametes be haploid?
- ASo that the zygote has twice the normal number of chromosomes
- BSo that the gametes can make more proteins
- CSo that the zygote has the normal number of 46 chromosomes
- DSo that the gametes can divide quickly by mitosis
5.보통
A protein is made to be secreted out of the cell. What path does it follow?
- ASmooth ER, then mitochondrion, then vesicle, then cell membrane
- BRough ER, then Golgi apparatus, then vesicle, then cell membrane
- CNucleus, then lysosome, then Golgi apparatus, then cell membrane
- DGolgi apparatus, then rough ER, then nucleus, then cell membrane
6.보통
Where does the Krebs (citric acid) cycle take place in a eukaryotic cell?
- AIn the nucleus
- BOn the rough endoplasmic reticulum
- CIn the cytoplasm
- DIn the mitochondrial matrix
7.어려움
A man with an X-linked recessive disorder (XʰY) has children with a woman who has two normal alleles (XᴴXᴴ). What is expected among their children?
- AAll daughters are affected, and all sons are carriers
- BAll sons are affected, and no daughters are carriers
- CHalf of the sons and half of the daughters are affected
- DAll daughters are carriers, and no sons are affected
8.어려움
유전자의 시작 부분 근처에 염기가 하나 더 삽입되었습니다. 이것이 단백질에 큰 영향을 주는 경우가 많은 이유는 무엇인가요?
- A유전자가 다른 염색체로 바뀌기 때문이다
- B단백질의 아미노산이 하나만 바뀌기 때문이다
- C암호가 중복되어 있어 영향이 없기 때문이다
- D이후 모든 코돈의 해독틀이 밀리기 때문이다
정답표
- 1. B · 46개
- 2. B · 1000
- 3. D · Hydrogen bonds between the bases
- 4. C · So that the zygote has the normal number of 46 chromosomes
- 5. B · Rough ER, then Golgi apparatus, then vesicle, then cell membrane
- 6. D · In the mitochondrial matrix
- 7. D · All daughters are carriers, and no sons are affected
- 8. D · 이후 모든 코돈의 해독틀이 밀리기 때문이다
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