Biology for nursing entrance exams worksheet with answers

What is a haploid cell?

1. AA cell with no nucleus
2. BA cell with an extra chromosome
3. CA cell with one set of chromosomes
4. DA cell with two sets of chromosomes

Which characteristic is shared by all living things?

1. AThey have a backbone and a brain
2. BThey make their own food by photosynthesis
3. CThey respond to changes in their environment
4. DThey are made of many cells

In genetics, what is a carrier?

1. AA person who has a dominant disorder
2. BA person with two recessive alleles who has the disorder
3. CA person who has lost both alleles for the gene, so shows no trait
4. DA person with one recessive allele for a disorder but no symptoms

A study finds a positive correlation between hours of exercise and lung capacity. What does this mean?

1. AThere is no link between the two variables
2. BAs exercise increases, lung capacity tends to decrease
3. CAs exercise increases, lung capacity tends to increase
4. DExercise has been proven to cause higher lung capacity

What is an inversion mutation?

1. AA segment of a chromosome is lost completely
2. BA whole extra chromosome is added to the cell
3. CA segment of a chromosome moves to a different, non-matching chromosome
4. DA chromosome segment breaks off and is reattached the wrong way round

During hard exercise, muscle cells run short of oxygen. What do they produce from glucose instead?

1. AGlycogen and water
2. BLactic acid (lactate) and a small amount of ATP
3. CLarge amounts of ATP and oxygen
4. DAlcohol and carbon dioxide

Liver cells take in cholesterol-carrying LDL particles only after the particles bind to specific proteins on the cell surface. Which process is this?

1. AReceptor-mediated endocytosis
2. BPinocytosis of extracellular fluid
3. CExocytosis
4. DSimple diffusion

A karyotype shows 45 chromosomes, with a single X chromosome and no Y. Which condition is this?

1. ATurner syndrome
2. BKlinefelter syndrome
3. CA typical male karyotype
4. DDown syndrome