Biology for nursing entrance exams worksheet with answers

In the scientific name Homo sapiens, what does Homo name?

1. AThe genus
2. BThe family
3. CThe species
4. DThe kingdom

Which elements make up carbohydrates?

1. ACarbon, hydrogen and oxygen
2. BCarbon, nitrogen and sulfur
3. CCarbon, hydrogen and nitrogen
4. DHydrogen, oxygen and phosphorus

On which structures are proteins assembled from amino acids?

1. ALysosomes
2. BCentrioles
3. CRibosomes
4. DVacuoles

What is a bacterial endospore?

1. AA reproductive cell that bacteria use to make new colonies quickly
2. BA hair-like structure used to swim towards food
3. CA tough, dormant form that survives heat, drying and many disinfectants
4. DA small ring of DNA that carries antibiotic resistance genes

How does facilitated diffusion differ from active transport?

1. AIt moves only water and no other substances
2. BIt needs no energy and moves substances down their gradient
3. CIt needs ATP and moves substances against their gradient
4. DIt works without any membrane proteins

Why is a buffer system important in blood?

1. AIt raises the blood glucose level
2. BIt resists changes in pH
3. CIt makes the blood clot faster
4. DIt carries oxygen to the tissues

Why does the influenza vaccine need to be updated most years?

1. AThe vaccine damages the immune system after one year, so it must be repeated
2. BThe virus keeps changing its surface proteins through mutation
3. CInfluenza is caused by a different bacterium each year
4. DAntibodies cannot be made against viruses

The field of view of a microscope is 0.5 mm wide. About 10 cells fit across it in a line. What is the approximate width of one cell?

1. A500 µm
2. B5 µm
3. C0.5 µm
4. D50 µm