1.やさしい
What is an organism's genotype?
- AThe traits that can be seen or measured
- BThe alleles it carries for a trait
- CThe number of cells in its body
- DThe environment in which it lives
2.やさしい
Which type of microscope is needed to see a virus?
- AA magnifying glass
- BAn electron microscope
- CA dissecting microscope
- DA light microscope
3.やさしい
In science, what is an observation?
- AA rule that explains all known facts
- BInformation gathered with the senses or instruments
- CA conclusion drawn before any data are collected
- DA guess about why something happens
4.ふつう
In which phase of mitosis do the chromosomes condense and the nuclear envelope break down?
- AMetaphase
- BAnaphase
- CTelophase
- DProphase
5.ふつう
How do embryonic stem cells differ from most adult stem cells?
- AThey are haploid, while adult stem cells are diploid
- BThey can become almost any cell type, while adult stem cells are more limited
- CThey can no longer divide, while adult stem cells divide quickly
- DThey are found only in plants, while adult stem cells are found in animals
6.ふつう
What are introns?
- ACodons that tell the ribosome to stop translation
- BNon-coding sections removed from pre-mRNA before translation
- CCoding sections joined together to form the mature mRNA
- DShort pieces of DNA made on the lagging strand
7.むずかしい
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
- CThe beaks changed because the birds chose to eat new food
- DEach bird changed its beak by using it more
8.むずかしい
A large molecule contains carbon, hydrogen, oxygen, nitrogen and phosphorus. Its monomers each have a sugar and a base. What type of molecule is it?
- AA protein
- BA lipid
- CA carbohydrate
- DA nucleic acid
解答
- 1. B · The alleles it carries for a trait
- 2. B · An electron microscope
- 3. B · Information gathered with the senses or instruments
- 4. D · Prophase
- 5. B · They can become almost any cell type, while adult stem cells are more limited
- 6. B · Non-coding sections removed from pre-mRNA before translation
- 7. B · Natural selection favoured beaks suited to each food source
- 8. D · A nucleic acid
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