Biology for nursing entrance exams worksheet with answers

What is a pathogen?

1. AA cell of the immune system that fights infection
2. BA harmless microbe living on the skin
3. CA medicine that kills bacteria
4. DA microorganism or agent that causes disease

Which of these is a fungus?

1. AEscherichia coli
2. BYeast
3. CInfluenza virus
4. DAmoeba

Where in the cell does glycolysis take place?

1. AIn the nucleus
2. BIn the chloroplast
3. CIn the cytoplasm
4. DIn the mitochondrial matrix

A student switches a light microscope from low power to high power. What happens to the field of view?

1. AIt gets smaller and usually darker
2. BIt gets larger but less detailed
3. CIt gets larger and brighter
4. DIt stays the same size but gets brighter

Drugs against fungal infections often cause more side effects than drugs against bacteria. Why?

1. AFungal cells are eukaryotic, like human cells
2. BFungi have no cell membrane for drugs to act on
3. CFungi reproduce only by binary fission
4. DFungi are much smaller than bacteria

Where does translation take place?

1. AIn the lysosomes
2. BIn the cell wall
3. CInside the nucleus
4. DAt the ribosomes

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

1. AThe virus turns harmless microbes into pathogens
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. DHIV kills the normal flora of the skin and gut

Griffith injected mice with heat-killed harmful bacteria mixed with live harmless bacteria. The mice died, and live harmful bacteria were found in them. What did this show?

1. ABacteria can be killed by the immune system of mice
2. BA substance from the dead bacteria changed the harmless ones
3. CHeat makes harmless bacteria become harmful when they are injected
4. DThe mice were killed by the dead bacteria alone