护理入学考试生物练习卷（附答案）

What is the main job of the cell wall in a plant cell?

1. ATo control which genes are switched on in the nucleus
2. BTo make proteins for the cell
3. CTo release energy from glucose
4. DTo support the cell and stop it from bursting

What is an organism's genome?

1. AThe proteins made by one cell
2. BThe traits that can be seen
3. CA single gene on one chromosome
4. DAll of its genetic material

Which elements make up carbohydrates?

1. ACarbon, nitrogen and sulfur
2. BHydrogen, oxygen and phosphorus
3. CCarbon, hydrogen and nitrogen
4. DCarbon, hydrogen and oxygen

什么是密码子？

1. A染色体上在有丝分裂时纺锤丝附着的部分
2. B启动转录的蛋白质
3. C编码一种氨基酸的三个 mRNA 碱基
4. D编码一种蛋白质的单个碱基

In a pedigree, a trait appears in every generation, and every affected child has at least one affected parent. Which inheritance pattern is most likely?

1. AX-linked recessive
2. BAutosomal dominant
3. CA new mutation in each generation
4. DAutosomal recessive

是什么使粗面内质网看起来"粗糙"？

1. A融合在其外侧的溶酶体
2. B其膜内的叶绿体
3. C储存在其表面的脂肪滴
4. D附着在其表面的核糖体

Two parents who both have a genetic condition have a child who does not. Assuming a single gene, what inheritance pattern does this show?

1. AX-linked recessive, with the father as a carrier
2. BAutosomal dominant, with both parents heterozygous
3. CAutosomal recessive, with both parents homozygous
4. DAutosomal recessive, with both parents heterozygous

At dawn, a plant shows no overall uptake or release of oxygen or carbon dioxide. What is the best explanation?

1. AIt only respires at dawn
2. BIt has stopped both photosynthesis and respiration until it is light
3. CIts rate of photosynthesis equals its rate of respiration
4. DIts stomata are permanently closed at dawn