1.쉬움
What is a pathogen?
- AA microorganism or agent that causes disease
- BA harmless microbe living on the skin
- CA medicine that kills bacteria
- DA cell of the immune system that fights infection
2.쉬움
What is natural selection?
- AAnimals choosing which mates they like best, so traits change at random
- BHumans breeding plants for useful traits
- CIndividuals with helpful traits survive and reproduce more
- DOrganisms changing their genes when they need to
3.쉬움
What is a haploid cell?
- AA cell with one set of chromosomes
- BA cell with no nucleus
- CA cell with an extra chromosome
- DA cell with two sets of chromosomes
4.보통
Salivary amylase begins the digestion of which nutrient in the mouth?
- ACellulose
- BFat
- CStarch
- DProtein
5.보통
적혈구를 순수한 물에 넣었습니다. 가장 가능성 높은 결과는 무엇인가요?
- A쪼그라들고 주름진다
- B부풀어 오르고 터질 수 있다
- C크기가 그대로이다
- D두 개의 세포로 나뉜다
6.보통
What is a bacterial endospore?
- AA hair-like structure used to swim towards food
- BA small ring of DNA that carries antibiotic resistance genes
- CA reproductive cell that bacteria use to make new colonies quickly
- DA tough, dormant form that survives heat, drying and many disinfectants
7.어려움
AaBb 식물을 aabb 식물과 교배합니다. 두 유전자는 독립적으로 분리됩니다. 자손에서 기대되는 표현형 비는 얼마인가요?
- A9 : 3 : 3 : 1
- B3 : 1
- C1 : 1 : 1 : 1
- D1 : 2 : 1
8.어려움
Fresh liver is dropped into hydrogen peroxide and bubbles form quickly. Boiled liver gives no bubbles. What is the best conclusion?
- AThe bubbles are carbon dioxide from respiration
- BBoiled liver contains more hydrogen peroxide than fresh liver
- CLiver contains an enzyme that is destroyed by boiling
- DHydrogen peroxide is broken down only by heat
정답표
- 1. A · A microorganism or agent that causes disease
- 2. C · Individuals with helpful traits survive and reproduce more
- 3. A · A cell with one set of chromosomes
- 4. C · Starch
- 5. B · 부풀어 오르고 터질 수 있다
- 6. D · A tough, dormant form that survives heat, drying and many disinfectants
- 7. C · 1 : 1 : 1 : 1
- 8. C · Liver contains an enzyme that is destroyed by boiling
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