Biology for nursing entrance exams worksheet with answers

What is apoptosis?

1. ADivision of the cytoplasm
2. BProgrammed cell death
3. CUncontrolled cell division
4. DFusion of two gametes

What is a monosaccharide?

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

How many chromosomes are there in a typical human body cell?

1. A23
2. B44
3. C46
4. D92

What is a random sample?

1. AA group chosen because they are likely to support the hypothesis
2. BA group where everyone in the population has an equal chance of being chosen
3. CA group chosen by the researcher because they are easy to reach and willing
4. DA group made only of people who volunteer to take part

What do starch, glycogen and cellulose have in common?

1. AThey are lipids that store energy
2. BThey are proteins made of amino acids
3. CThey are polysaccharides made of glucose units
4. DThey are nucleic acids that store hereditary information

Which statement about Archaea is correct?

1. AThey are eukaryotes that have a nucleus and membrane-bound organelles
2. BThey are prokaryotes, and many live in extreme environments
3. CThey are a type of virus
4. DThey are multicellular plants

Why are modified viruses often used to deliver genes in gene therapy?

1. AViruses are larger than human cells, so they can carry many genes
2. BViruses naturally insert their genetic material into host cells
3. CViruses can reproduce without a host cell
4. DViruses produce antibodies that fix faulty genes

The rate of an enzyme reaction rises as substrate is added but then levels off, even when more substrate is added. Why?

1. AThe enzyme has been denatured
2. BAll the active sites are occupied
3. CThe products have turned back into substrate
4. DThe substrate has become an inhibitor