解答つき看護学校入学試験のための生物ワークシート

Which sugar is found in DNA?

1. AFructose
2. BGlucose
3. CRibose
4. DDeoxyribose

What does phloem carry in a plant?

1. AWater from the roots only
2. BChlorophyll to the stem
3. CSugars made in the leaves
4. DCarbon dioxide from the air

Which definition of a species is most often used for animals?

1. AA group that can interbreed and have fertile offspring
2. BAll the animals that eat the same food
3. CAny organisms that look alike
4. DAll of the different organisms that live together in one area

A greenhouse is warm and brightly lit, but the air has very little carbon dioxide. What is most likely limiting the rate of photosynthesis?

1. AThe number of stomata
2. BThe temperature
3. CThe light intensity in the greenhouse
4. DThe carbon dioxide concentration

Why are G–C base pairs held together more strongly than A–T pairs?

1. AG–C pairs form three hydrogen bonds, and A–T pairs form two
2. BG–C pairs are joined by strong covalent bonds instead of hydrogen bonds
3. CA–T pairs are found only in RNA
4. DG and C are both purines, so they fit more tightly

ヘテロ接合の親どうし（Aa × Aa）を交配した。期待される遺伝子型の比はどれか。

1. A1 AA : 2 Aa : 1 aa
2. B1 AA : 1 aa
3. C2 AA : 1 Aa : 1 aa
4. D3 AA : 1 aa

A dihybrid cross gives offspring in a ratio of about 9 : 3 : 3 : 1. What does this suggest?

1. ABoth parents are homozygous dominant for both genes
2. BThe two genes are tightly linked on the same chromosome
3. CBoth parents are heterozygous for two genes that assort independently
4. DOne parent is AaBb and the other is homozygous aabb

遺伝子の始まり付近に塩基が 1 つ余分に挿入された。これが通常、タンパク質に大きな影響を与えるのはなぜか。

1. A暗号は重複しているので、影響はないから
2. B以降のすべてのコドンの読み枠がずれるから
3. C遺伝子が別の染色体になってしまうから
4. Dタンパク質のアミノ酸が 1 つ変わるだけだから