1.ง่าย
เครื่องมือใดใช้ดูเซลล์แต่ละเซลล์
- Aเครื่องสเปกโทรมิเตอร์วัดเสียง
- Bกล้องโทรทรรศน์
- Cกล้องจุลทรรศน์
- Dเทอร์มอมิเตอร์
2.ง่าย
Which definition of a species is most often used for animals?
- AAll the animals that eat the same food
- BA group that can interbreed and have fertile offspring
- CAll of the different organisms that live together in one area
- DAny organisms that look alike
3.ง่าย
What are the three parts of a nucleotide?
- AAn amino group, a sugar and a fatty acid
- BA glycerol, a phosphate and a fatty acid
- CA carboxyl group, a base and a lipid
- DA phosphate, a sugar and a nitrogen base
4.ปานกลาง
เซลล์เม็ดเลือดแดงถูกวางในน้ำบริสุทธิ์ มีแนวโน้มจะเกิดอะไรขึ้นมากที่สุด
- Aบวมและอาจแตก
- Bหดตัวและย่น
- Cคงขนาดเดิม
- Dแบ่งตัวเป็นสองเซลล์
5.ปานกลาง
A protein is made to be secreted out of the cell. What path does it follow?
- AGolgi apparatus, then rough ER, then nucleus, then cell membrane
- BSmooth ER, then mitochondrion, then vesicle, then cell membrane
- CNucleus, then lysosome, then Golgi apparatus, then cell membrane
- DRough ER, then Golgi apparatus, then vesicle, then cell membrane
6.ปานกลาง
How do embryonic stem cells differ from most adult stem cells?
- AThey can become almost any cell type, while adult stem cells are more limited
- BThey can no longer divide, while adult stem cells divide quickly
- CThey are haploid, while adult stem cells are diploid
- DThey are found only in plants, while adult stem cells are found in animals
7.ยาก
A man with an X-linked recessive disorder (XʰY) has children with a woman who has two normal alleles (XᴴXᴴ). What is expected among their children?
- AAll daughters are affected, and all sons are carriers
- BAll daughters are carriers, and no sons are affected
- CAll sons are affected, and no daughters are carriers
- DHalf of the sons and half of the daughters are affected
8.ยาก
Why are organ transplant patients usually given drugs that suppress the immune system?
- ATheir immune system would recognise the donor cells as foreign
- BThe donor organ contains bacteria that must be killed
- CThe drugs help the new organ to grow larger
- DThe drugs change the donor organ's DNA so that it matches the patient
เฉลย
- 1. C · กล้องจุลทรรศน์
- 2. B · A group that can interbreed and have fertile offspring
- 3. D · A phosphate, a sugar and a nitrogen base
- 4. A · บวมและอาจแตก
- 5. D · Rough ER, then Golgi apparatus, then vesicle, then cell membrane
- 6. A · They can become almost any cell type, while adult stem cells are more limited
- 7. B · All daughters are carriers, and no sons are affected
- 8. A · Their immune system would recognise the donor cells as foreign
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