1.やさしい
Which protein gives strength to skin, tendons and bone?
- ACollagen
- BAmylase
- CHaemoglobin
- DMyosin
2.やさしい
Which organelle makes lipids and helps break down drugs and toxins in liver cells?
- ACentriole
- BRough endoplasmic reticulum
- CNucleolus
- DSmooth endoplasmic reticulum
3.やさしい
How does a vaccine protect a person?
- AIt replaces the person's white blood cells with stronger ones
- BIt blocks the pathogen from entering the nose
- CIt kills all bacteria in the body straight away
- DIt trains the immune system with a harmless form of a pathogen
4.ふつう
What is the difference between an epidemic and a pandemic?
- AAn epidemic affects the whole world at once
- BA pandemic spreads across many countries or continents
- CAn epidemic is caused only by bacteria
- DA pandemic affects only one town
5.ふつう
What happens when a ribosome reaches a stop codon on the mRNA?
- ATranslation ends and the protein is released
- BThe ribosome goes back to the start codon
- CA special amino acid is added to end the chain
- DThe mRNA is copied back into DNA
6.ふつう
Which body system works with the respiratory system to deliver oxygen to body cells?
- AThe skeletal system
- BThe circulatory system
- CThe digestive system
- DThe urinary system
7.むずかしい
A point mutation changes a codon in the middle of a gene into a stop codon. What is the most likely effect?
- AA protein that is longer than normal
- BA shortened protein that usually does not work
- CA protein with one different amino acid
- DNo change, because stop codons are ignored
8.むずかしい
病気のない両親から、その病気をもつ子が生まれた。単一の遺伝子と仮定すると、最も可能性の高い説明はどれか。
- A形質は優性で、両親とも発症している
- B子は、父親のY染色体からのみその形質を受け継いだ
- C形質は劣性で、両親とも保因者である
- D形質は優性で、片方の親がホモ接合である
解答
- 1. A · Collagen
- 2. D · Smooth endoplasmic reticulum
- 3. D · It trains the immune system with a harmless form of a pathogen
- 4. B · A pandemic spreads across many countries or continents
- 5. A · Translation ends and the protein is released
- 6. B · The circulatory system
- 7. B · A shortened protein that usually does not work
- 8. C · 形質は劣性で、両親とも保因者である
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