1.ง่าย
What does sterilisation mean?
- AReducing the number of microbes on the skin before an injection
- BKilling or removing all microorganisms, including spores
- CWashing away visible dirt with water
- DKilling only the viruses on a surface
2.ง่าย
In which form do animals store glucose in the liver and muscles?
- AGlycogen
- BCellulose
- CStarch
- DChitin
3.ง่าย
Which protein carries oxygen in red blood cells?
- AHaemoglobin
- BInsulin
- CCollagen
- DKeratin
4.ปานกลาง
เหตุใดอุณหภูมิที่สูงมากจึงทำให้เอนไซม์ส่วนใหญ่หยุดทำงาน
- Aสารตั้งต้นกลายเป็นเอนไซม์ชนิดอื่น
- Bเอนไซม์เสียสภาพ: บริเวณเร่งเปลี่ยนรูปร่าง
- Cความร้อนทำให้เอนไซม์แตกเป็นกรดอะมิโนทันที
- Dเอนไซม์เคลื่อนที่ช้าเกินไปจนพบสารตั้งต้นไม่ได้
5.ปานกลาง
A bone marrow transplant can treat some blood cancers. Why does it work?
- AThe donor marrow contains antibiotics that kill cancer
- BThe donor stem cells produce new, healthy blood cells
- CThe donor red cells divide to make more red cells
- DThe transplant replaces the patient's bones
6.ปานกลาง
By which process does oxygen enter a cell and carbon dioxide leave it?
- AFacilitated diffusion through glucose carriers
- BEndocytosis in small vesicles
- CActive transport by membrane pumps
- DSimple diffusion through the lipid bilayer
7.ยาก
Why are organ transplant patients usually given drugs that suppress the immune system?
- AThe donor organ contains bacteria that must be killed
- BTheir immune system would recognise the donor cells as foreign
- CThe drugs help the new organ to grow larger
- DThe drugs change the donor organ's DNA so that it matches the patient
8.ยาก
Redi placed meat in open jars and in jars covered with gauze. Maggots appeared only on meat that flies could reach. What did this show?
- AFlies form from rotting meat, and then they lay eggs on fresh meat
- BMaggots come from eggs laid by flies, not from the meat itself
- CGauze produces chemicals that stop meat from rotting
- DMeat turns into maggots when exposed to air
เฉลย
- 1. B · Killing or removing all microorganisms, including spores
- 2. A · Glycogen
- 3. A · Haemoglobin
- 4. B · เอนไซม์เสียสภาพ: บริเวณเร่งเปลี่ยนรูปร่าง
- 5. B · The donor stem cells produce new, healthy blood cells
- 6. D · Simple diffusion through the lipid bilayer
- 7. B · Their immune system would recognise the donor cells as foreign
- 8. B · Maggots come from eggs laid by flies, not from the meat itself
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