Biology for nursing entrance exams worksheet with answers

Free printable Biology for nursing entrance exams worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy

In an experiment, what is the independent variable?

  1. AThe factor that is measured as the result
  2. BThe factor the researcher deliberately changes
  3. CThe factor kept the same in every group
  4. DThe group that receives no treatment
2.Easy

What are restriction enzymes?

  1. AEnzymes that cut DNA at specific base sequences
  2. BEnzymes that join amino acids into proteins
  3. CEnzymes that copy RNA into DNA
  4. DEnzymes that digest fats in the intestine
3.Easy

Which organelle breaks down fatty acids and hydrogen peroxide?

  1. APeroxisome
  2. BRibosome
  3. CChloroplast
  4. DCentriole
4.Medium

Why can DNA profiling (fingerprinting) identify individual people?

  1. ARepeated non-coding DNA regions vary in length between people
  2. BDNA in blood differs from DNA in skin
  3. CEach person's genes code for different amino acids
  4. DEvery person has a different number of chromosomes in their cells
5.Medium

The sodium-potassium pump moves ions across the cell membrane. What does one cycle of the pump do?

  1. AMoves Na⁺ in and K⁺ out, without using ATP
  2. BMoves 3 K⁺ out and 2 Na⁺ in, using ATP
  3. CMoves 2 Na⁺ out and 3 K⁺ in, using ATP
  4. DMoves 3 Na⁺ out and 2 K⁺ in, using ATP
6.Medium

Nerve cells release chemical messengers (neurotransmitters) stored in vesicles. By which process are they released?

  1. AExocytosis
  2. BPhagocytosis
  3. CEndocytosis
  4. DOsmosis
7.Hard

A plant is kept in the dark to use up its starch. One leaf is then sealed in a bag with a chemical that absorbs CO₂, and the plant is placed in light. Later, that leaf has no starch, but the other leaves do. What does this show?

  1. ACarbon dioxide is needed for photosynthesis
  2. BLight is needed for photosynthesis
  3. CChlorophyll is needed for photosynthesis
  4. DOxygen is needed for photosynthesis
8.Hard

A point mutation changes a codon in the middle of a gene into a stop codon. What is the most likely effect?

  1. AA shortened protein that usually does not work
  2. BA protein that is longer than normal
  3. CA protein with one different amino acid
  4. DNo change, because stop codons are ignored

Answer key

  1. 1. B · The factor the researcher deliberately changes
  2. 2. A · Enzymes that cut DNA at specific base sequences
  3. 3. A · Peroxisome
  4. 4. A · Repeated non-coding DNA regions vary in length between people
  5. 5. D · Moves 3 Na⁺ out and 2 K⁺ in, using ATP
  6. 6. A · Exocytosis
  7. 7. A · Carbon dioxide is needed for photosynthesis
  8. 8. A · A shortened protein that usually does not work

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