Biology for nursing entrance exams worksheet with answers

What is a haploid cell?

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

In an experiment, what is the dependent variable?

1. AThe factor that is measured to see the effect
2. BThe hypothesis being tested
3. CAny factor that is kept constant
4. DThe factor the researcher deliberately changes

What is a decomposer?

1. AAn animal that eats only plants
2. BAn organism that makes food from sunlight
3. CAn animal that hunts other animals
4. DAn organism that breaks down dead material

Which type of graph is best for comparing the number of patients with each ABO blood type?

1. AA scatter plot
2. BA line graph
3. CA histogram
4. DA bar graph

A red blood cell is placed in a very salty (hypertonic) solution. What happens?

1. AWater enters the cell and it bursts
2. BWater leaves the cell and it shrinks
3. CNothing changes because salt cannot cross
4. DSalt enters the cell and it swells

What happens in a dehydration synthesis reaction?

1. AWater is removed from the cell by osmosis
2. BTwo monomers join and a water molecule is released
3. CA polymer is split by adding a water molecule
4. DA cell dries out and dies

A patient breathes very slowly, so carbon dioxide builds up in the blood. What happens to the blood pH, and why?

1. AIt falls, because CO₂ forms carbonic acid in the blood
2. BIt rises, because CO₂ is a base
3. CIt rises, because CO₂ removes hydrogen ions
4. DIt stays the same, because CO₂ does not dissolve in blood

Both parents have blood type O. Which blood type can their children have?

1. AType A or type O
2. BAny of the four types
3. CType AB only
4. DOnly type O