Pearson Edexcel International GCSE in Biology · 4BI1 · Free · no account needed
Cloning Mammals — exam questions
10 original Incandio exam-style questions on Cloning Mammals, 27 marks, about 27 minutes of writing. Each one carries the command word, the tariff and the specification statement it assesses, exactly as a paper presents them. This is an original Incandio practice question, written to reflect the structure and demands of the qualification. It is not an official Pearson Edexcel past-paper question.
This is the practice set for Cloning Mammals — the lesson that teaches it. Read the lesson first if the idea is new; come here when you want to find out whether you can turn it into marks. Completely free, no account needed to read.
What these questions ask of you
7 command words run through this set, and on Pearson Edexcel International GCSE Biology each one means something precise. Answering the wrong command is the commonest way a candidate who understands the lesson still loses the mark.
- Which (1 mark)
- one option chosen from the set given
- State (1 mark)
- one precise fact, no justification
- Describe (2–4 marks)
- developed, linked statements of WHAT happens — no reason required, but detail is Misread as: giving one bare statement where the tariff asked for a developed account
- Explain (2–4 marks)
- a causal chain — WHY it happens, each link a separate marking point Misread as: describing what happens without giving the reason it happens
- Suggest (1–3 marks)
- a plausible answer applying taught biology to a situation not taught
- Give (1–2 marks)
- a short factual answer drawn from recall or from the data
- Evaluate (3–6 marks)
- evidence on both sides, then a judgement that follows from it
Assessed on Paper 1 (4BI1/1B) and Paper 2 (4BI1/2B), against AO1, AO2, AO3.
Where these sit in the specification
Pearson Edexcel International GCSE Biology (4BI1) — statements 5.19 · 5.20. Incandio is aligned to this specification; it is not published by, endorsed by or affiliated with Pearson, and it reproduces none of Pearson's wording.
The 10 questions
Answer them on paper, then open the lesson's exam practice to have them marked. The mark scheme, the accepted and rejected answers and the annotated model answer are in Incandio and are not printed here — an answer beside its question is not practice.
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Table 1 — the three sheep involved in one cloning experiment, and what each contributed. Sheep Breed Contribution P white-faced the udder cell whose nucleus was used Q black-faced the unfertilised egg cell R black-faced carried the embryo to birth (a)
(1)Give
Give the sheep in Table 1 that the cloned lamb is genetically identical to.
Table 1 — the three sheep involved in one cloning experiment, and what each contributed. Sheep Breed Contribution P white-faced the udder cell whose nucleus was used Q black-faced the unfertilised egg cell R black-faced carried the embryo to birth (b)
(3)Explain
Explain what the face colour of the cloned lamb would be, and why.
Table 1 — the three sheep involved in one cloning experiment, and what each contributed. Sheep Breed Contribution P white-faced the udder cell whose nucleus was used Q black-faced the unfertilised egg cell R black-faced carried the embryo to birth (c)
(2)Suggest
Suggest why the scientists deliberately used a white-faced sheep for P and black-faced sheep for Q and R.
Table 1 — the three sheep involved in one cloning experiment, and what each contributed. Sheep Breed Contribution P white-faced the udder cell whose nucleus was used Q black-faced the unfertilised egg cell R black-faced carried the embryo to birth (Total for Question 1 = 6 marks)
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(1)Which
Which is removed from the egg cell before nuclear transfer?
Structure A the cytoplasm B the nucleus C the cell membrane D the mitochondria (Total for Question 2 = 1 mark)
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(1)State
State which animal a cloned mammal is genetically identical to.
(Total for Question 3 = 1 mark)
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(4)Describe
Describe how a mammal is cloned by nuclear transfer.
Figure 1 — cloning a mammal by nuclear transfer. (Total for Question 4 = 4 marks)
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(3)Explain
Explain why a nucleus from an adult body cell can direct the development of a whole new animal.
(Total for Question 5 = 3 marks)
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(3)Explain
Explain why cloning is used to produce transgenic animals that make human proteins in their milk.
(Total for Question 6 = 3 marks)
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(3)Suggest
Suggest why a cloned animal is not always completely identical to the animal that supplied the nucleus.
(Total for Question 7 = 3 marks)
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(6)Evaluate
Evaluate the cloning of farm animals by nuclear transfer as a way of improving a herd.
(Total for Question 8 = 6 marks)
Have them marked, then defend the answer
Practice tells you the mark; teaching it back tells you whether you understand it. On Incandio a topic counts as mastered only once you have taught it and defended it.
- Mark these questions — 10 questions, marked on Incandio against the authored scheme, with the mistake you actually made named.
- Teach it — explain Cloning Mammals to Ember, an AI pupil who does not have it yet and asks the awkward question.
- Defend it — argue it against Ian Wilmut over three rounds, marked against descriptors you can read first.
Completely free. No subscriptions, no paywalls, no account needed to start.
Back to the lesson
- Cloning Mammals — How a lamb was built from an udder cell, what that proved about every cell in your body, and what such animals are now used for.
- All of Incandio Biology · Incandio Exam Practice