Biology for nursing entrance exams worksheet with answers

What is a stem cell?

1. AA plant cell found only in the stem
2. BA fully specialised cell that can no longer divide or change its type
3. CAn unspecialised cell that can divide and become other cell types
4. DA cell that carries oxygen in the blood

What does xylem carry in a plant?

1. AOxygen from the leaves to the roots
2. BSugars from the leaves to the roots
3. CWater and minerals from the roots upward
4. DSeeds from the flowers to the soil

What are the bacteria called that normally live on the skin and in the gut without causing disease?

1. ANormal flora
2. BPrions
3. CVectors
4. DPathogens

A plant with genotype Aa is crossed with an aa plant. What fraction of the offspring is expected to show the recessive trait?

1. A3/4
2. B1/4
3. C1/2
4. DNone of them

A protein is made to be secreted out of the cell. What path does it follow?

1. ANucleus, then lysosome, then Golgi apparatus, then cell membrane
2. BGolgi apparatus, then rough ER, then nucleus, then cell membrane
3. CRough ER, then Golgi apparatus, then vesicle, then cell membrane
4. DSmooth ER, then mitochondrion, then vesicle, then cell membrane

Which body system works with the respiratory system to deliver oxygen to body cells?

1. AThe digestive system
2. BThe urinary system
3. CThe skeletal system
4. DThe circulatory system

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

Volunteers drink 0, 100 or 200 mg of caffeine, and their heart rate is measured after 30 minutes. What is the dependent variable?

1. AThe heart rate after 30 minutes
2. BThe 30-minute waiting time
3. CThe volunteers themselves
4. DThe dose of caffeine