Biology for nursing entrance exams worksheet with answers

What are the monomers of nucleic acids such as DNA?

1. AGlycerol molecules
2. BAmino acids
3. CNucleotides
4. DGlucose molecules

What do receptor proteins in the cell membrane do?

1. AThey digest bacteria that enter the cell
2. BThey bind specific signal molecules, such as hormones
3. CThey make ATP for the cell
4. DThey store the cell's genetic code for making proteins

According to the cell theory, where do new cells come from?

1. AFrom cells that already exist
2. BFrom viruses that enter the body
3. CFrom non-living matter in the body
4. DFrom minerals in food

What is a chromosomal translocation?

1. AA piece of a chromosome is flipped around in place
2. BA piece of a chromosome is copied twice and stays in the same place
3. CA piece of one chromosome attaches to a non-matching chromosome
4. DOne DNA base is replaced by another base

What does the enzyme lipase break down?

1. AProteins into amino acids and peptides
2. BFats into fatty acids and glycerol
3. CDNA into nucleotides
4. DStarch into sugars

What happens to a protein when it is denatured?

1. AIt loses some of its amino acids but keeps its folded shape
2. BIt loses its 3D shape but keeps its amino acid sequence
3. CIt turns into a carbohydrate
4. DIt becomes more active than before

A student gives fertiliser to 2 tomato plants and none to 2 others. The fertilised plants grow taller. What is the main weakness of the conclusion that fertiliser increases growth?

1. AHeight cannot be measured accurately
2. BThe sample size is too small to rule out chance
3. CThere was no independent variable
4. DFertiliser should have been given to all four plants

A new infectious agent passes through filters that trap bacteria, does not grow on nutrient agar and multiplies only inside living cells. What is it most likely to be?

1. AA protozoan
2. BA bacterium
3. CA fungus
4. DA virus