护理入学考试生物练习卷（附答案）

What is a Punnett square used for?

1. APredicting the possible genotypes of offspring
2. BCounting the chromosomes in a cell
3. CMeasuring the size of a cell
4. DShowing the order of genes on a chromosome

What is the main material in the cell walls of fungi?

1. AChitin
2. BCollagen
3. CPeptidoglycan
4. DCellulose

What is cell differentiation?

1. AThe process by which DNA is copied
2. BThe process by which cells die on purpose
3. CThe process by which cells become specialised
4. DThe process by which a cell divides into two

Which sequence describes the usual flow of genetic information in a cell?

1. ADNA to protein to RNA
2. BProtein to RNA to DNA
3. CRNA to DNA to protein
4. DDNA to RNA to protein

什么是突变？

1. A组织中细胞数量的改变
2. B同源染色体的配对
3. C分裂前 DNA 的正常复制
4. DDNA 碱基序列的改变

Which body system works with the respiratory system to deliver oxygen to body cells?

1. AThe digestive system
2. BThe skeletal system
3. CThe circulatory system
4. DThe urinary system

A single-celled organism has a nucleus, no cell wall and swims using cilia. In which group is it best placed?

1. AFungi
2. BProtists
3. CPlants
4. DBacteria

HIV infects and destroys helper T cells. Why do people with untreated advanced HIV get infections that healthy people rarely get?

1. AHIV kills the normal flora of the skin and gut
2. BTheir immune response is too weak to control normally harmless microbes
3. CHelper T cells make the antibiotics that the body needs to fight infection
4. DThe virus turns harmless microbes into pathogens