1.ง่าย
กลูโคสเป็นตัวอย่างของโมเลกุลชนิดใด
- Aพอลิแซ็กคาไรด์
- Bมอนอแซ็กคาไรด์
- Cลิพิด
- Dโปรตีน
2.ง่าย
Which piece of equipment gives the most precise measurement of a liquid volume?
- AA beaker
- BA Petri dish
- CA test tube
- DA graduated cylinder
3.ง่าย
Which of these diseases is caused by a virus?
- AAthlete's foot
- BInfluenza
- CMalaria
- DTuberculosis
4.ปานกลาง
What is a random sample?
- AA group chosen because they are likely to support the hypothesis
- BA group chosen by the researcher because they are easy to reach and willing
- CA group where everyone in the population has an equal chance of being chosen
- DA group made only of people who volunteer to take part
5.ปานกลาง
อะไรทำให้เอนโดพลาสมิกเรติคิวลัมแบบขรุขระดู "ขรุขระ"
- Aคลอโรพลาสต์ภายในเยื่อ
- Bไลโซโซมที่ติดอยู่ด้านนอก
- Cหยดไขมันที่สะสมบนผิว
- Dไรโบโซมที่เกาะอยู่บนผิว
6.ปานกลาง
There are 64 possible codons but only about 20 amino acids. What does this tell you about the genetic code?
- AOnly 20 of the codons are ever used
- BEach codon codes for more than one amino acid at the same time
- CEach amino acid has exactly three codons
- DMost amino acids are coded for by more than one codon
7.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?
- AHybrid vigour from crossbreeding
- BArtificial selection by humans
- CHomeostasis in both populations
- DSpeciation after geographic isolation
8.ยาก
Finches on the Galápagos Islands have different beak shapes on islands with different foods. What is the best explanation?
- AThe birds were all created with the same beak and it never changed
- BNatural selection favoured beaks suited to each food source
- CEach bird changed its beak by using it more
- DThe beaks changed because the birds chose to eat new food
เฉลย
- 1. B · มอนอแซ็กคาไรด์
- 2. D · A graduated cylinder
- 3. B · Influenza
- 4. C · A group where everyone in the population has an equal chance of being chosen
- 5. D · ไรโบโซมที่เกาะอยู่บนผิว
- 6. D · Most amino acids are coded for by more than one codon
- 7. D · Speciation after geographic isolation
- 8. B · Natural selection favoured beaks suited to each food source
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