Sample exam questions - using food and controlling growthFree response questions

Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice, structured, mathematical and practical questions.

Part ofBiology (Single Science)Using food and controlling growth

Free response questions

Free response questions will appear throughout both exam papers (Breadth and Depth), and at both Foundation tier and Higher tier.

These questions provide answer lines for you to write your answer, and may sometimes also provide a blank space for you to draw a diagram or show your working out.

The number of answer lines and the number of marks for the question are guides to the amount of detail to include in your answer. A question worth 1 mark with only one answer line probably only requires a one-sentence answer, or perhaps just a single word or phrase. For questions with more marks and more answer lines you will have to go into more detail or give specific data points, eg:

  • the number of deaths from cardiovascular disease increased [1 mark]
  • the number of deaths from cardiovascular disease increased by 50% [2 marks]

Free response questions often start with a command word such as 'describe' or 'explain'. It's important to understand the different types of answers required by 'describe' and 'explain'. As a rule of thumb:

  • describe what happens, when and where
  • explain how and why it happens ('it happens because…')

Other command words you might see include:

  • 'write down' (give a short answer, without explaining it)
  • 'suggest' (use your scientific knowledge and understanding to give a sensible answer in an unfamiliar context)
  • 'compare' (write about the similarities and differences between two things)
  • 'discuss' (write about the issues related to a topic, and talk about arguments for and against)

Sample question 1 - Foundation

Question

A cell is observed to divide once every hour, doubling the total number of cells.

A student estimates the number of cells after ten hours to be 1,024

Explain why this number is an estimate and is not an exact number of cells after ten hours. [2 marks]

OCR 21st Century, GCE Biology, Paper J257, 2016.

Sample question 2 - Foundation

Question

A newt is a type of amphibian

It can grow a new leg if one is damaged or bitten off by a predator.

What type of cell division does the newt use to grow a new leg? [1 mark]

OCR 21st Century, GCE Biology, Paper J257, 2016.

Sample question 3 - Foundation

Question

The skin contains stem cells. Stem cells are unspecialised cells.

How does this make them useful to scientists? [2 marks]

OCR 21st Century, GCE Biology, Paper J257, 2016.

Sample question 4 - Higher

Question

Stem cells can be obtained from embryos.

Why are some people against using embryos as a source of stem cells? [1 mark]

OCR 21st Century, GCE Biology, Paper J257 - Higher, 2016.

Sample question 5 - Higher

Question

A group of students decide to look at human red blood cells and human egg cells using a light microscope.

Name a structure that would be visible in the human egg cell but not in the human red blood cell. [1 mark]

OCR 21st Century, GCE Biology, Paper J257 - Higher, 2016.

Sample question 6 - Higher

Question

There are two types of cell division.

Human egg cells are produced by one type of cell division. The other type is used for growth of new cells.

Diagram showing the two types of cell division

Identify the two types of cell division (X and Y) shown in the diagram above. [2 marks]

OCR 21st Century, GCE Biology, Paper J257 - Higher, 2016.