Biology for nursing entrance exams worksheet with answers

Which gas do plants take in from the air for photosynthesis?

1. AOxygen
2. BHydrogen
3. CCarbon dioxide
4. DNitrogen

Which element is found in all organic molecules?

1. ACarbon
2. BSulfur
3. CNitrogen
4. DPhosphorus

What is transpiration?

1. AThe movement of sugars through the phloem to the roots
2. BThe taking in of CO₂ for photosynthesis
3. CThe growth of roots towards water
4. DThe loss of water vapour from the leaves of a plant

What does it mean that a person's blood is Rh negative?

1. ATheir red cells carry extra RhD antigen
2. BTheir red cells lack the RhD antigen
3. CTheir plasma has no antibodies at all
4. DTheir red cells lack the A and B antigens

What is a random sample?

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

Red-green colour blindness is X-linked recessive. A colour-blind woman (XᵇXᵇ) has children with a man with normal colour vision (XᴮY). What fraction of their sons is expected to be colour-blind?

1. AAll
2. BOne half
3. CNone
4. DOne quarter

In a trial, 20% of patients improve on a new drug and 18% improve on a placebo. What is the best conclusion?

1. AThe drug works well, because 20% of patients improved
2. BThe placebo was harmful to the patients
3. CThe drug adds little benefit beyond the placebo
4. DThe drug is ten times better than the placebo

Why is ATP described as an energy carrier rather than a long-term energy store?

1. AATP contains no energy in its bonds, so it cannot be stored
2. BCells hold only a little and constantly recycle it from ADP
3. CATP can be made only in plants
4. DATP is stored in large amounts in fat tissue