1.쉬움
In an enzyme reaction, what is the substrate?
- AThe gene that codes for the enzyme
- BThe part of the enzyme that changes shape
- CThe product released at the end
- DThe substance that the enzyme acts on
2.쉬움
What is the main job of the nucleolus?
- AIt stores water and salts for the nucleus
- BIt releases energy from glucose for the nucleus
- CIt digests worn-out parts of the cell
- DIt makes ribosomal RNA and builds ribosome parts
3.쉬움
광합성으로 만들어지는 물질은 무엇인가요?
- A젖산과 ATP
- B포도당과 산소
- C단백질과 질소
- D이산화 탄소와 물
4.보통
In disease spread, what is a vector?
- AThe first person to catch a disease
- BA blood test used to detect antibodies
- CAn organism that carries a pathogen between hosts
- DA medicine that destroys a pathogen in the body
5.보통
거친면 소포체가 "거칠게" 보이는 이유는 무엇인가요?
- A표면에 지방 방울이 저장되어 있기 때문이다
- B표면에 리보솜이 붙어 있기 때문이다
- C바깥쪽에 리소좀이 융합되어 있기 때문이다
- D막 안에 엽록체가 있기 때문이다
6.보통
Lactose (milk sugar) is a disaccharide. Which two monosaccharides is it made of?
- AFructose and galactose
- BGlucose and glucose
- CGlucose and fructose
- DGlucose and galactose
7.어려움
Why do phospholipids arrange themselves into a double layer in water?
- AThey are fully soluble in water
- BTheir heads are hydrophobic and their tails are hydrophilic
- CThey carry a strong positive charge on both ends
- DTheir heads are hydrophilic and their tails are hydrophobic
8.어려움
A farmer's crops grow poorly in soil lacking nitrates. Why do plants need nitrogen?
- ATo absorb more carbon dioxide through the stomata
- BTo make amino acids, proteins and nucleic acids
- CTo make glucose during photosynthesis
- DTo build cellulose cell walls
정답표
- 1. D · The substance that the enzyme acts on
- 2. D · It makes ribosomal RNA and builds ribosome parts
- 3. B · 포도당과 산소
- 4. C · An organism that carries a pathogen between hosts
- 5. B · 표면에 리보솜이 붙어 있기 때문이다
- 6. D · Glucose and galactose
- 7. D · Their heads are hydrophilic and their tails are hydrophobic
- 8. B · To make amino acids, proteins and nucleic acids
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