1.쉬움
What is a monomer?
- AA small unit that joins with others to form a polymer
- BA very large molecule that is made of many smaller units
- CA molecule that contains no carbon
- DAn enzyme that breaks down polymers
2.쉬움
What are stomata?
- ASmall pores in leaves that allow gas exchange
- BTubes that carry water up the stem
- CHairs on roots that absorb minerals
- DGreen structures in the leaf that store starch
3.쉬움
Which gas do plants take in from the air for photosynthesis?
- AOxygen
- BCarbon dioxide
- CHydrogen
- DNitrogen
4.보통
Why can an electron microscope show more detail than a light microscope?
- AElectrons have a much shorter wavelength than light
- BElectron microscopes use stronger glass lenses
- CElectrons are brighter than light
- DElectron microscopes use living cells only
5.보통
What is meant by independent assortment in meiosis?
- ADNA is copied separately in each chromosome
- BSister chromatids stay joined until the end of meiosis, so all gametes are identical
- CAll chromosomes from the mother go into the same gamete
- DHomologous pairs line up randomly, so gametes get different mixes of chromosomes
6.보통
In which phase of mitosis do the chromosomes condense and the nuclear envelope break down?
- AMetaphase
- BTelophase
- CProphase
- DAnaphase
7.어려움
AaBb 식물을 aabb 식물과 교배합니다. 두 유전자는 독립적으로 분리됩니다. 자손에서 기대되는 표현형 비는 얼마인가요?
- A3 : 1
- B1 : 1 : 1 : 1
- C9 : 3 : 3 : 1
- D1 : 2 : 1
8.어려움
세균 한 마리가 20분마다 분열합니다. 죽는 것이 없다면 2시간 후에는 세균이 몇 마리가 되나요?
- A64마리
- B128마리
- C12마리
- D32마리
정답표
- 1. A · A small unit that joins with others to form a polymer
- 2. A · Small pores in leaves that allow gas exchange
- 3. B · Carbon dioxide
- 4. A · Electrons have a much shorter wavelength than light
- 5. D · Homologous pairs line up randomly, so gametes get different mixes of chromosomes
- 6. C · Prophase
- 7. B · 1 : 1 : 1 : 1
- 8. A · 64마리
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