1.쉬움
Which protein gives strength to skin, tendons and bone?
- ACollagen
- BAmylase
- CMyosin
- DHaemoglobin
2.쉬움
What is a trait that is controlled by many genes called?
- AA polygenic trait
- BA codominant trait
- CA sex-linked trait
- DA recessive trait
3.쉬움
What is the pH of pure water at 25 °C?
- A1
- B7
- C14
- D0
4.보통
Why does ice float on liquid water?
- AIce molecules are lighter than liquid water molecules
- BIce contains more air than liquid water
- CIce is denser than liquid water
- DHydrogen bonds hold ice in an open, less dense structure
5.보통
Why is water good at dissolving salts and sugars?
- AIts molecules are nonpolar
- BIt contains carbon atoms
- CIts molecules are polar
- DIt has a very low boiling point
6.보통
Red-green colour blindness is X-linked recessive. A colour-blind woman (XᵇXᵇ) has children with a man with normal colour vision (XᴮY). What fraction of their sons is expected to be colour-blind?
- AAll
- BOne quarter
- COne half
- DNone
7.어려움
세포 수준에서 암의 근본 원인은 무엇인가요?
- A세포가 미토콘드리아를 모두 잃는 것
- B세포가 완전히 분열을 멈추고 죽는 것
- C세포 주기 유전자의 돌연변이로 통제되지 않는 분열이 일어나는 것
- D세균이 핵에 들어와 세포 자신의 DNA를 자기 것으로 바꾸는 것
8.어려움
Starch and cellulose are both made of glucose. Why can humans digest starch but not cellulose?
- ACellulose contains no glucose units at all, only fructose
- BStarch is a protein, and cellulose is a lipid
- CHumans lack an enzyme that breaks the bonds in cellulose
- DCellulose dissolves in water but starch does not
정답표
- 1. A · Collagen
- 2. A · A polygenic trait
- 3. B · 7
- 4. D · Hydrogen bonds hold ice in an open, less dense structure
- 5. C · Its molecules are polar
- 6. A · All
- 7. C · 세포 주기 유전자의 돌연변이로 통제되지 않는 분열이 일어나는 것
- 8. C · Humans lack an enzyme that breaks the bonds in cellulose
자세한 단계별 풀이: examproblems.com에서 이 주제를 연습하세요.