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Unit 2 - Cell Structure
Animal cells never have cell walls.

Unit 2 - Cell Structure

This GCSE Biology quiz tests your knowledge of cell structure, from organelles like the nucleus and mitochondria to ribosomes where proteins are made.

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(quiz starts below)

Fascinating Fact:

Ribosomes are very small structures in the cytoplasm where protein synthesis takes place using instructions from the genes.

In GCSE Biology, cell structure is studied to understand how organelles work together. You compare animal and plant cells, link structures to their functions, and see how cells support life processes.

  • Cell: The basic structural and functional unit of all living organisms.
  • Organelle: A specialised structure within a cell that carries out a particular function, such as the nucleus or mitochondria.
  • Ribosome: A tiny structure in the cytoplasm where proteins are built using instructions from the cell’s DNA.
What is meant by cell structure in GCSE Biology?

Cell structure refers to the parts of a cell, such as the nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes, and how these organelles work together.

What are the main differences between plant and animal cells?

Both plant and animal cells have a nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes. Plant cells also have a cell wall, chloroplasts, and a large permanent vacuole.

What is the function of mitochondria and ribosomes in a cell?

Mitochondria are the sites of aerobic respiration and release energy for the cell. Ribosomes are the sites of protein synthesis, where amino acids are joined to make proteins.

To see a larger image, click on the picture.
1 .
Plant cells are shown in this picture. What are the pale blue structures?
Photograph courtesy of Kristian Peters at Wikimedia Commons
Cell membranes
Cytoplasm
Cell walls
Chloroplasts
All plant cells have cell walls as well as cell membranes
2 .
At fertilisation, a sperm cell fuses with an egg cell. Which of these structures is never found in sperm or egg cells?
Photograph courtesy of Wikimedia Commons
Cytoplasm
Mitochondria
Ribosomes
Vacuole
These are a feature of plant cells - although they do occasionally occur in animal cells
3 .
All cells, including the bacteria shown here, contain ribosomes. What is the function of ribosomes?
Provide energy from respiration
Protein synthesis
Photosynthesis
Control activities of the cell
Many of the chemical reactions in a cell involve the creation of proteins
4 .
This is a diagram of an animal cell. Which of the following is not found in an animal cell?
Nucleus
Mitochondria
Cell wall
Cytoplasm
Cell walls are formed from cellulose and give plant cells both strength and shape
5 .
This is an image of a nucleus. What is the name of the chemical found inside the nucleus which contains the genetic code?
RNA
TRA
ZRA
DNA
DNA stands for Deoxyribo Nucleic Acid
6 .
This plant cell is packed with structures which make sugars by the process of photosynthesis. What are they called?
Photograph courtesy of Martin Bahmann at Wikimedia Commons
Chloroplasts
Chloroform
Chloride
Chloroblasts
They use light energy to combine water and carbon dioxide, forming glucose
7 .
Which of these structures are located in all plant and animal cells and contain DNA?
Vacuoles
Chloroplasts
Ribosomes
Chromosomes
Chromosomes can be seen most clearly during cell division
8 .
Chlostridium botulinum are dangerous and produce a toxin which can be fatal. Which type of cell are they?
Yeast
Bacteria
Animal
Plant
The waste products from bacteria can be toxic
9 .
This is Spirogyra which is a type of alga found in ponds. What are the green structures within the cytoplasm?
Photograph courtesy of Frederic.marbach at Wikimedia Commons
Nucleus
Mitochondria
Chloroplasts
Ribosomes
Spirogyra is therefore a producer - it manufactures its own food
10 .
This is a picture of animal cells. Mitochondria are found in all plant and animal cells. What do mitochondria provide?
Energy
Life
Food
Water
Mitochondria provide energy so that the cell can do useful work
You can find more about this topic by visiting BBC Bitesize - Cell structure

Author:  Donna Davidson (GCSE Biology Teacher & Examiner, Quiz Writer)

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