1.쉬움
What does it mean that a cell membrane is selectively permeable?
- AIt lets only water molecules cross
- BIt lets every substance cross freely in both directions
- CIt lets no substance cross at all
- DIt lets some substances cross but not others
2.쉬움
세포의 크기를 나타낼 때 가장 흔히 쓰는 단위는 무엇인가요?
- A마이크로미터
- B미터(m)
- C킬로미터(km)
- D리터(L)
3.쉬움
포도당은 어떤 종류의 분자에 해당하나요?
- A다당류
- B단당류
- C지질
- D단백질
4.보통
녹말, 글리코젠, 셀룰로스의 공통점은 무엇인가요?
- A아미노산으로 이루어진 단백질이다
- B에너지를 저장하는 지질이다
- C유전 정보를 저장하는 핵산이다
- D포도당 단위로 이루어진 다당류이다
5.보통
Many vitamins act as coenzymes. What does this mean?
- AThey help enzymes carry out their reactions
- BThey replace enzymes that have been denatured
- CThey are digested to release large amounts of energy
- DThey are built into the cell membrane
6.보통
A study finds a positive correlation between hours of exercise and lung capacity. What does this mean?
- AAs exercise increases, lung capacity tends to increase
- BThere is no link between the two variables
- CAs exercise increases, lung capacity tends to decrease
- DExercise has been proven to cause higher lung capacity
7.어려움
Home pregnancy tests use antibodies that bind the hormone hCG. Why do they react with hCG and not with other proteins in urine?
- AUrine contains no other proteins at all
- BAntibodies bind every protein but change colour only with hCG
- CThe hormone hCG is a type of antibody itself
- DEach antibody binds a specific antigen shape
8.어려움
HIV infects and destroys helper T cells. Why do people with untreated advanced HIV get infections that healthy people rarely get?
- ATheir immune response is too weak to control normally harmless microbes
- BHelper T cells make the antibiotics that the body needs to fight infection
- CHIV kills the normal flora of the skin and gut
- DThe virus turns harmless microbes into pathogens
정답표
- 1. D · It lets some substances cross but not others
- 2. A · 마이크로미터
- 3. B · 단당류
- 4. D · 포도당 단위로 이루어진 다당류이다
- 5. A · They help enzymes carry out their reactions
- 6. A · As exercise increases, lung capacity tends to increase
- 7. D · Each antibody binds a specific antigen shape
- 8. A · Their immune response is too weak to control normally harmless microbes
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