1.쉬움
What do centrioles do in an animal cell?
- AThey make lipids for the cell membrane
- BThey store the cell's digestive enzymes until they are needed
- CThey capture light for photosynthesis
- DThey help organise the spindle during cell division
2.쉬움
삼투는 선택적 투과성 막을 통한 어떤 물질의 확산인가요?
- A단백질
- B나트륨 이온
- C포도당
- D물
3.쉬움
What is a trait that is controlled by many genes called?
- AA recessive trait
- BA sex-linked trait
- CA polygenic trait
- DA codominant trait
4.보통
HIV is a retrovirus. What does its enzyme reverse transcriptase do?
- AIt makes DNA from the virus's RNA
- BIt breaks down the host's ribosomes
- CIt makes proteins from the virus's DNA
- DIt makes RNA from the host's DNA
5.보통
Why can DNA profiling (fingerprinting) identify individual people?
- AEvery person has a different number of chromosomes in their cells
- BEach person's genes code for different amino acids
- CRepeated non-coding DNA regions vary in length between people
- DDNA in blood differs from DNA in skin
6.보통
세포 주기에서 DNA는 언제 복제되나요?
- A체세포 분열의 중기에
- B세포질 분열 동안
- C간기의 S기에
- D감수 2분열에서만
7.어려움
Finches on the Galápagos Islands have different beak shapes on islands with different foods. What is the best explanation?
- AThe birds were all created with the same beak and it never changed
- BNatural selection favoured beaks suited to each food source
- CThe beaks changed because the birds chose to eat new food
- DEach bird changed its beak by using it more
8.어려움
A farmer's crops grow poorly in soil lacking nitrates. Why do plants need nitrogen?
- ATo build cellulose cell walls
- BTo absorb more carbon dioxide through the stomata
- CTo make glucose during photosynthesis
- DTo make amino acids, proteins and nucleic acids
정답표
- 1. D · They help organise the spindle during cell division
- 2. D · 물
- 3. C · A polygenic trait
- 4. A · It makes DNA from the virus's RNA
- 5. C · Repeated non-coding DNA regions vary in length between people
- 6. C · 간기의 S기에
- 7. B · Natural selection favoured beaks suited to each food source
- 8. D · To make amino acids, proteins and nucleic acids
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