1.쉬움
What does sterilisation mean?
- AKilling only the viruses on a surface
- BWashing away visible dirt with water
- CReducing the number of microbes on the skin before an injection
- DKilling or removing all microorganisms, including spores
2.쉬움
What is a neuron?
- AA muscle cell that contracts
- BA nerve cell that carries electrical signals
- CA bone cell that stores calcium
- DA blood cell that carries oxygen around the body
3.쉬움
What is an allele?
- AA pair of matching chromosomes from each parent
- BA different version of the same gene
- CA protein made from a gene
- DA section of DNA between genes
4.보통
Why do the palisade cells near the top surface of a leaf contain many chloroplasts?
- AThey protect the leaf from insects and strong winds
- BThey carry sugars from the leaves down to the roots
- CThey store most of the plant's water for dry periods
- DThey get the most light and do most of the photosynthesis
5.보통
과학자들이 실험을 반복하거나 많은 대상을 사용하는 이유는 무엇인가요?
- A매번 독립변인을 바꾸기 위해
- B대조군이 필요 없게 하기 위해
- C가설이 참임을 확실히 증명하기 위해
- D우연이 결과에 미치는 영향을 줄이기 위해
6.보통
세포 주기에서 DNA는 언제 복제되나요?
- A간기의 S기에
- B세포질 분열 동안
- C감수 2분열에서만
- D체세포 분열의 중기에
7.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 build cellulose cell walls
- DTo make glucose during photosynthesis
8.어려움
세균 한 마리가 20분마다 분열합니다. 죽는 것이 없다면 2시간 후에는 세균이 몇 마리가 되나요?
- A64마리
- B32마리
- C12마리
- D128마리
정답표
- 1. D · Killing or removing all microorganisms, including spores
- 2. B · A nerve cell that carries electrical signals
- 3. B · A different version of the same gene
- 4. D · They get the most light and do most of the photosynthesis
- 5. D · 우연이 결과에 미치는 영향을 줄이기 위해
- 6. A · 간기의 S기에
- 7. B · To make amino acids, proteins and nucleic acids
- 8. A · 64마리
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