1.ง่าย
โปรตีนถูกประกอบขึ้นจากกรดอะมิโนที่โครงสร้างใด
- Aไรโบโซม
- Bแวคิวโอล
- Cเซนทริโอล
- Dไลโซโซม
2.ง่าย
What is an allele?
- AA different version of the same gene
- BA protein made from a gene
- CA section of DNA between genes
- DA pair of matching chromosomes from each parent
3.ง่าย
สารใดเป็นผลผลิตของการสังเคราะห์ด้วยแสง
- Aกลูโคสและออกซิเจน
- Bโปรตีนและไนโตรเจน
- Cคาร์บอนไดออกไซด์และน้ำ
- Dกรดแลกติกและ ATP
4.ปานกลาง
Why can DNA profiling (fingerprinting) identify individual people?
- AEach person's genes code for different amino acids
- BDNA in blood differs from DNA in skin
- CEvery person has a different number of chromosomes in their cells
- DRepeated non-coding DNA regions vary in length between people
5.ปานกลาง
A woman with blood type O has a child with a man of type AB. Which blood types can their children have?
- AO only
- BA or B
- CA, B, AB or O
- DO or AB
6.ปานกลาง
A solution of pH 4 is compared with a solution of pH 6. How many times more hydrogen ions does the pH 4 solution have?
- A2 times
- B10 times
- C100 times
- D20 times
7.ยาก
One sample of an enzyme is boiled and then cooled to 37 °C. Another is kept at 4 °C and then warmed to 37 °C. Which sample will work at 37 °C?
- ANeither sample will work
- BOnly the sample that was boiled
- CBoth samples will work equally well
- DOnly the sample that was kept at 4 °C
8.ยาก
Two populations of one species live on separate islands for many thousands of years. When brought together, they can no longer interbreed. What has happened?
- AHomeostasis in both populations
- BHybrid vigour from crossbreeding
- CArtificial selection by humans
- DSpeciation after geographic isolation
เฉลย
- 1. A · ไรโบโซม
- 2. A · A different version of the same gene
- 3. A · กลูโคสและออกซิเจน
- 4. D · Repeated non-coding DNA regions vary in length between people
- 5. B · A or B
- 6. C · 100 times
- 7. D · Only the sample that was kept at 4 °C
- 8. D · Speciation after geographic isolation
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