AQA GCSE · Combined Science: Trilogy 8464

Cell biology: Practice Questions

4 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Cell biology.

9 questions26 marksFree, no account

Question 1

1 mark

A stem cell is an undifferentiated cell of an organism. Which statement correctly identifies the differentiation capabilities of stem cells found in adult bone marrow compared to those found in human embryos?

Question 2

1 mark

A typical human cell nucleus has a diameter of approximately \( 6 \times 10^{-6} \text{ m} \). A bacterial cell has a diameter of approximately \( 1 \times 10^{-6} \text{ m} \). Based on these orders of magnitude, how many times larger is the nucleus than the bacterial cell?

Question 3

1 mark

In therapeutic cloning, an embryo is produced with the same genes as the patient. What is the primary medical advantage of using stem cells derived from this specific process?

Question 4

1 mark

What is a defining characteristic of embryonic stem cells that differentiates them from adult bone marrow stem cells in terms of their therapeutic potential?

Question 5

2 marks

State the specific role of ribosomes in a cell and identify which type of microscope would be required to see them in detail.

Write your answer out first, then check it against the worked solution.

Question 6

3 marks

A student uses a microscope to observe a bacterial cell and an animal cell. Describe two structural differences the student would observe between the genetic material of the prokaryotic bacterial cell and the eukaryotic animal cell.

Write your answer out first, then check it against the worked solution.

Question 7

6 marks

Explain the three stages of the cell cycle that result in the production of two genetically identical daughter cells.

Write your answer out first, then check it against the worked solution.

Question 8

6 marks

A student uses a microscope to observe a selection of cells. Two of the cells are shown to have specific features: Cell A has a single DNA loop and small rings of DNA called plasmids, while Cell B has its genetic material enclosed within a nucleus.

(a) Name the two broad types of cells represented by Cell A and Cell B. (2)

(b) Identify two sub-cellular structures that would be found in both Cell A and Cell B. (2)

(c) Cell B is an animal cell. Name one additional sub-cellular structure that would be found if Cell B were a plant cell, and state its function. (2)

Write your answer out first, then check it against the worked solution.

Question 9

5 marks

Stem cells are undifferentiated cells capable of giving rise to more cells of the same type and certain other types of cells through differentiation.

(a) Describe the primary difference between the function of stem cells found in human embryos compared to those found in adult bone marrow.

(b) Therapeutic cloning is a medical process where an embryo is produced with the same genes as the patient. Explain how this process can be used to treat medical conditions and why it is advantageous for the patient’s recovery.

(c) The use of stem cells in medicine is a controversial subject. State one potential clinical risk and one ethical objection that people may have regarding embryonic stem cell research.

Write your answer out first, then check it against the worked solution.

* The content provided by thinka is generated by AI and may not always be accurate or up-to-date. Please use it as a supplementary resource and verify with official materials.

You've seen the model answer. Now get yours marked.

This page can show you how a good answer looks. It cannot tell you what your answer was missing. thinka marks your written work against the real mark scheme in about 15 seconds.

Get My Answers Marked Back to the notes

Want more questions like these? Get a fresh set on this topic, graded as you go.