护理入学考试生物练习卷（附答案）

What is a zygote?

1. AThe diploid cell formed when a sperm fertilises an egg
2. BAn unfertilised egg cell
3. CA body cell that has just completed its first round of mitosis
4. DA haploid cell made by meiosis

What is a monosaccharide?

1. AA fat made of glycerol and fatty acids
2. BA chain of many amino acids
3. CA single sugar unit, such as glucose
4. DTwo sugars joined together, such as sucrose

What is the main job of the nucleolus?

1. AIt releases energy from glucose for the nucleus
2. BIt makes ribosomal RNA and builds ribosome parts
3. CIt stores water and salts for the nucleus
4. DIt digests worn-out parts of the cell

What do the spindle fibres do during cell division?

1. AThey attach to chromosomes and move them to the poles
2. BThey copy the DNA of each chromosome before the cell divides
3. CThey digest the old cell membrane
4. DThey make the new nuclear envelope

Why do many plants close their stomata on hot, dry days?

1. ATo speed up photosynthesis
2. BTo reduce water loss
3. CTo take in more carbon dioxide
4. DTo release more oxygen

什么决定蛋白质的形状和功能？

1. A其氨基酸的序列
2. B细胞中葡萄糖的量
3. C膜中脂肪酸的顺序
4. D其所携带的磷酸基团的数量

One sample of an enzyme is boiled and then cooled to 37 °C. Another is kept at 4 °C and then warmed to 37 °C. Which sample will work at 37 °C?

1. AOnly the sample that was boiled
2. BNeither sample will work
3. CBoth samples will work equally well
4. DOnly the sample that was kept at 4 °C

In uncontrolled diabetes, glucose appears in the urine and the person passes large volumes of urine. What is the best explanation?

1. AInsulin makes the kidneys filter more blood
2. BGlucose in the kidney filtrate holds water by osmosis
3. CGlucose is broken down into water in the bladder
4. DGlucose makes the kidneys absorb more water