1.쉬움
What are the building blocks (monomers) of proteins?
- ANucleotides
- BAmino acids
- CSimple sugars
- DFatty acids
2.쉬움
For a given substance, in which state do its particles move fastest?
- ASolid
- BLiquid
- CThey move at the same speed in all states
- DGas
3.쉬움
What do the letters STP stand for in gas chemistry?
- AStandard time and pressure
- BSpecific temperature and particles
- CStable temperature point
- DStandard temperature and pressure
4.보통
How is 0.00045 written in scientific notation?
- A4.5 × 10⁴
- B4.5 × 10⁻⁵
- C4.5 × 10⁻³
- D4.5 × 10⁻⁴
5.보통
칼슘(Ca²⁺)과 염소(Cl⁻)로 만들어지는 화합물은 무엇인가요?
- ACaCl
- BCa₂Cl₃
- CCa₂Cl
- DCaCl₂
6.보통
Which bond joins amino acids together in a protein?
- AA glycosidic bond
- BA peptide bond
- CA hydrogen bond
- DAn ionic bond
7.어려움
풍선에 300 K에서 기체 2.0 L가 들어 있습니다. 압력이 일정할 때 450 K로 가열합니다. 새 부피는 얼마인가요?
- A4.5 L
- B2.0 L
- C3.0 L
- D1.3 L
8.어려움
A mixture contains sand, salt and water. Which sequence separates all three?
- AUse a magnet to remove the salt, then filter the sand
- BFilter to remove the sand, then distil the filtrate to collect water and leave salt
- CDistil first to remove the sand, then filter out the salt
- DEvaporate all the water first, then filter the salt away from the dry sand
정답표
- 1. B · Amino acids
- 2. D · Gas
- 3. D · Standard temperature and pressure
- 4. D · 4.5 × 10⁻⁴
- 5. D · CaCl₂
- 6. B · A peptide bond
- 7. C · 3.0 L
- 8. B · Filter to remove the sand, then distil the filtrate to collect water and leave salt
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