1.やさしい
What does sterilisation mean?
- AKilling only the viruses on a surface
- BReducing the number of microbes on the skin before an injection
- CKilling or removing all microorganisms, including spores
- DWashing away visible dirt with water
2.やさしい
What is the main material in the cell walls of fungi?
- ACollagen
- BCellulose
- CChitin
- DPeptidoglycan
3.やさしい
Which enzyme adds new nucleotides to build a new DNA strand?
- ADNA polymerase
- BHelicase
- CRNA polymerase
- DPepsin
4.ふつう
Golden rice was genetically modified to make beta-carotene. What is the aim?
- ATo make the rice grow faster in cold climates
- BTo make the rice resistant to all insects
- CTo increase the protein content of the rice
- DTo help prevent vitamin A deficiency
5.ふつう
What is the role of ribosomal RNA (rRNA)?
- AIt brings single amino acids to the ribosome
- BIt carries the code from DNA to the ribosome
- CIt stores genetic information in the nucleus
- DIt forms part of the ribosome and helps join amino acids
6.ふつう
体細胞分裂のどの時期に、姉妹染色分体が反対の極へ引かれるか。
- A前期
- B後期
- C中期
- D間期
7.むずかしい
Starch and cellulose are both made of glucose. Why can humans digest starch but not cellulose?
- AStarch is a protein, and cellulose is a lipid
- BHumans lack an enzyme that breaks the bonds in cellulose
- CCellulose dissolves in water but starch does not
- DCellulose contains no glucose units at all, only fructose
8.むずかしい
During the Industrial Revolution, soot darkened tree trunks in parts of England, and dark peppered moths became more common than pale ones. What best explains this?
- ABirds found and ate fewer dark moths on the dark trunks
- BThe moths chose to become dark to hide
- CDark moths were produced by the polluted air
- DThe soot settled on the pale moths and slowly turned them dark
解答
- 1. C · Killing or removing all microorganisms, including spores
- 2. C · Chitin
- 3. A · DNA polymerase
- 4. D · To help prevent vitamin A deficiency
- 5. D · It forms part of the ribosome and helps join amino acids
- 6. B · 後期
- 7. B · Humans lack an enzyme that breaks the bonds in cellulose
- 8. A · Birds found and ate fewer dark moths on the dark trunks
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