解答つき看護学校入学試験のための生物ワークシート

典型的なヒトの体細胞には、染色体がいくつあるか。

1. A23
2. B92
3. C44
4. D46

What are the bacteria called that normally live on the skin and in the gut without causing disease?

1. APathogens
2. BVectors
3. CPrions
4. DNormal flora

How many strands does an RNA molecule usually have?

1. AThree
2. BFour
3. CTwo
4. DOne

Why do root hair cells have long, thin extensions?

1. ATo carry out photosynthesis underground
2. BTo store starch for the winter
3. CTo anchor the plant firmly against strong winds and rain
4. DTo increase the surface area for absorbing water

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy mitosis, sharing copies of their chromosomes with neighbours
2. BBy meiosis, forming gametes with new alleles
3. CBy conjugation, transferring plasmids through a pilus
4. DBy osmosis, moving genes in water

What does it mean that a person's blood is Rh negative?

1. ATheir plasma has no antibodies at all
2. BTheir red cells lack the A and B antigens
3. CTheir red cells carry extra RhD antigen
4. DTheir red cells lack the RhD antigen

Why does cooking oil not mix with water?

1. AOil is denser than water and sinks
2. BWater molecules are nonpolar and avoid each other
3. COil molecules are polar and repel the charged ends of water molecules
4. DOil molecules are nonpolar and cannot form hydrogen bonds with water

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。

1. A子は、父親のY染色体からのみその形質を受け継いだ
2. B形質は優性で、片方の親がホモ接合である
3. C形質は優性で、両親とも発症している
4. D形質は劣性で、両親とも保因者である