Year 7 Cells
Cells Knowledge Grid
L.O.
What are animal and
plant cells like?
State what cells are
Label diagrams of animal
and plant cells
Describe what the
different parts of cells do
State what a
microscope is and why
it is used
List some examples of
specialised cells
Label a diagram of a
microscope with all the
parts
Describe what specialised
cells are
Describe the functions of
the parts of a microscope
What are multicellular
organisms?
State what unicellular
and multicellular
organisms are
Describe what cells,
tissues, organs and organ
systems are
What are microbes?
State what microbes
are
Name different types of
microbe
What are aseptic
techniques and why do
we use them?
What causes disease and
how can protect
ourselves?
How do substances
move in and out of cells?
State what septic
techniques are
Describe how septic
techniques are useful
Give named examples of
cells, tissues, organs and
organ systems in an
organism
Describe the main
features of different
types of microbe
Use antiseptic techniques
to collect reliable data
State how disease can
spread
Describe how harmful
microbes that cause
disease get inside us
Describe what is meant
by the word ‘diffusion’
What are microscopes?
What are specialised
cells?
State which
substances move in to
and out of cells
1
Explain what the
functions of specialised
cells are
Explain how and why
microbes can make us ill
Explain how and why
diffusion happens
Explain how animal cells
are different to plant
cells
Prepare a specimen slide
and observe cells under
a microscope
Explain how a range of
specialised cells are
adapted for their
function
Explain what the
different levels of
organisation in an
organism are
Explain how microbes
can enter the body
Interpret evidence to
compare bacteria grown
in different places
Explain what vaccination
is and how it prevents
disease
Explain why diffusion is
important in making sure
plants get the right
amount of water
Year 7 Cells
Word
Meaning
Adapted
When something has special features that allow it to carry out its
function.
Biopsy
When a small piece of tissue is taken from the body
and looked at in detail, to check for certain diseases or problems.
Brain
Organ that controls what the body does.
Breathing system
Cell
Cell division
Cell surface membrane
Organ system that takes in oxygen and gets rid of carbon
dioxide from our bodies.
The basic unit that living things are made of.
When a cell splits in two. New cells are made using cell division.
Controls what goes into and out of a cell.
Cellulose
A strong plant material used to make cell walls.
Cell wall
Tough wall around plant cells. Helps to support the cell.
Chlorophyll
Green substance found inside chloroplasts
Chloroplast
Green disc containing chlorophyll. Found in plant cells. Where
the plant makes food using photosynthesis.
Cilia
Small hairs on the surface of some cells.
Ciliated epithelial cell
Cell with cilia found in the lungs.
Circulatory system
Organ system that carries oxygen and food around the body.
Coarse focusing wheel
Wheel on a microscope that moves parts of the microscope a
large amount to get the image into focus.
Coverslip
Thin piece of glass used to hold a specimen in place on a slide.
Cytoplasm
Watery jelly inside a cell where the cell’s activities happen.
Digestive system
Excrete
Organ system that breaks down our food.
Getting rid of waste materials from the body.
Excretory system
Organ system that cleans the blood.
Eyepiece lens
Part of the microscope you look down.
Focus
Fine focusing wheel
Make an image clear and sharp.
Wheel on a microscope that moves parts of the microscope a
small amount to get the image into focus
Flower
Part of a plant used for reproduction.
Foodpipe
Organ in the shape of a tube that takes food from your mouth to
your stomach. Also called ‘gullet’.
Function
Job.
Year 7 Cells
Word
Meaning
Gullet
More scientific name for ‘foodpipe’.
Heart
Organ that pumps blood.
Intestines
The small intestine and large intestine together.
Kidneys
Organs used to clean the blood and make urine.
Large intestine
Organ that removes water from unwanted food.
Leaf
Plant organ used to make food by photosynthesis.
Liver
Organ used to make and destroy substances in our bodies.
Lungs
Organs used to take oxygen out of the air and put waste carbon
dioxide into the air.
Magnify
To make something look bigger.
Nerve cell
Cell that carries signals around the body. Also called a
‘neuron’.
Nervous system
Nucleus
Organ system that carries signals around the body.
The ‘control centre’ of a cell.
Objective lens
Part of the microscope that is closest to what you are looking at.
Organ
A large part of a plant or animal that does a very important job.
It is made from different tissues.
Organ system
Collection of organs working together to do a very important
job.
Palisade cell
Cell that contains many chloroplasts and is found in leaves.
Photosynthesis
Root
Process that plants use to make their own food. It needs light to
work.
Plant organ used to take water out of the soil.
Root hair cell
Cell found in roots. It has a large surface area to help the cell
absorb water quickly.
Root hair tissue
Found in roots. Takes in water from the soil.
Skin
Organ used for protection and feeling.
Slide
Glass sheet that a specimen is put on.
Small intestine
Specimen
Organ used to break up and absorb food.
What you look at down a microscope.
Stage
Part of a microscope. You put slides on it.
Stain
Dye used to colour parts of a cell to make them easier to see.
Year 7 Cells
Word
Meaning
Stem
Plant organ used to take water to the leaves and to support the
leaves.
Stomach
Organ used to break up food.
Tissue
A group of the same cells all doing the same job. Organs are
made of different tissues.
Trachea
More scientific name for ‘windpipe’.
Transplant
Putting a new organ into someone.
Vacuole
Storage space in plant cells. Contains cell sap.
Water transport system
Collection of plant organs working together to carry water up a
plant.
Windpipe
Organ in the shape of a tube that takes air to and from your
lungs. Also called ‘trachea’.
Xylem cell
Cell used to form tubes of xylem tissue which carry water.
Year 7 Cells
KNOWLEDGE ORGANISERS
Your knowledge organiser is designed to help you learn a range of knowledge and help you to be prepared
for your lessons at Ivanhoe.
When using your Knowledge Organiser remember: Look / cover / write / check / correct
Question
Animal and Plant Cells
Label this animal cell:
FOLD V HERE
Label this plant cell:
A
B
C
D
E
Answer
X: Cell membrane
Y: Cytoplasm
Z: Nucleus
A: Cell membrane
B: Cytoplasm
C: Nucleus
D: Chloroplast
E: Vacuole
F: Cell wall
F
What is the function of the cell membrane?
What is the function of the cytoplasm?
What is the function of the nucleus?
What is the function of the chloroplast?
What is the function of the vacuole?
What is the function of the cell wall?
Specialised cells
What is a specialised cell?
How is a nerve cell specialised for sending
messages around the body?
Controls what goes into and out of the cell
Where chemical reactions take place
Controls the cell,
Contains genetic material (DNA)
Photosynthesis (plant cell only)
Stores cell sap
Keeps the plant firm (plant cell only)
Provides support (plant cell only)
A cell whose shape and structure allow it to
perform a particular function
• Long and thin
• Has connections at each end
Year 7 Cells
Question
How is a red blood cell specialised
for transporting oxygen?
FOLD V HERE
Answer
•
•
No nucleus (to carry more oxygen)
Disk-like shape (increase surface area)
How is a sperm cell specialised
for fertilising an egg cell?
•
•
•
How is a leaf cell specialised
for photosynthesis?
•
•
Streamlined head
Long tail
Head of the sperm contains a chemical to
break down the jelly coat of an egg cell
Long and thin (large surface area)
Contains lots of chloroplasts
How is a root hair cell specialised
for absorbing water and nutrients?
•
•
Large surface area
No chloroplasts
Movement of Substances
What is diffusion?
Why do plants wilt?
Multicellular organisms
What is a multicellular organism?
What is a tissue?
What is an organ?
What is an organ system?
Unicellular Organisms and Microbes
What is a unicellular organism?
What are bacteria?
What are viruses?
What does ‘vaccination’ mean?
The movement of liquid or gas particles from an
area of high concentration to an area of low
concentration
• When plants do not have enough water
• The vacuole shrinks
• Plant becomes less rigid
An organism (living thing) that is made up of more
than one cell
A group of the same type of cells working together
to do a job
A group of tissues working together to do a job
A group of organs working together to do a job
An organism (living thing) made of only one cell
Single-celled organisms that do not have a nucleus
• Not technically a living organism
• Genetic material with a protein coating
that can invade living cells and reproduce
by taking over the cells they get in to
Injection of a killed or inactive microbe in order to
prepare the immune system to fight harmful
microbes which prevents disease
Year 7 Cells
Cells 1: Observing cells
1 Give a reason why cells cannot be seen using just your eyes.
[1 mark]
_________________________________________________________________________
2 Draw one line from each unit to the correct name.
[3 marks]
Unit
Name
mm
Centimetres
cm
Micrometres
µm
Millimetres
3 Figure 1 shows a drawing of some cells.
Figure 1
How do you know the drawing is bigger than the size of the actual cells?
_________________________________________________________________________
_________________________________________________________________________
[1 mark]
Year 7 Cells
4 Figure 2 shows a piece of lab equipment.
[5 marks]
Figure 2
(a) Name this equipment.
_____________________________
(b) Label Figure 2 using the following words.
Focusing wheel
Light source
Eyepiece lens
(c) The equipment shown in Figure 2 has three objective lenses.
×4
×10
×40
Which of these lenses has the greatest magnification?
______________________________________
(d) Give a reason why the total magnification of this equipment is greater than your
answer to part (c).
_________________________________________________________________________
Total marks ______ /10
Year 7 Cells
Cells 2: Animal cells
1 Complete the following sentences.
[2 marks]
All living things are made of simple building blocks called _________.
These building blocks are so small that they can only be seen using a ____________________.
2 Figure 1 shows an animal cell.
[2 marks]
Figure 1
Label the following cell parts in the boxes
on Figure 1.
Nucleus
Cytoplasm
Cell Membrane
3 Draw one line to match each cell part to its function.
[3 marks]
Cell part
Function
Nucleus
Where most cell reactions
happen
Cytoplasm
Where energy is released from
food molecules
Mitochondria
Contains DNA, which controls
the cell’s activities
4 State the function of the cell membrane.
_________________________________________________________________________
_________________________________________________________________________
[1 mark]
Year 7 Cells
5 Name two cell parts that animal cells do not contain.
[2 marks]
1. ______________________________________________________________________
2. ______________________________________________________________________
Total marks ______ /10
Year 7 Cells
Cells 3: Plant cells
1 State why plant cells can only be seen under a microscope.
[1 mark]
_________________________________________________________________________
2 Figure 1 shows a plant cell.
[3 marks]
Label the following cell parts in the boxes on Figure 1.
Nucleus
•
Chloroplasts
•
Cell wall
•
Vacuole
Figure 1
3 Different cell parts have different functions.
[3 marks]
Draw one line from each cell part to the correct function.
Cell part
Function
Chloroplasts
Contains cell sap to
maintain pressure in the cell
Cell wall
Where photosynthesis
happens
Vacuole
Provides support and
structure to the cell
4 State the purpose of the mitochondria.
_________________________________________________________________________
[1 mark]
Year 7 Cells
5 Give two differences in structure between animal cells and plant cells.
[2 marks]
1. ______________________________________________________________________
2. ______________________________________________________________________
Total marks ______ /10
Year 7 Cells
Cells 4: Diffusion in cells
1 Diffusion is important in getting substances into and out of cells.
[2 marks]
(a) Give one example of a substance that diffuses into animal cells.
_________________________________________________________________________
(b) Give one example of a substance that diffuses out of animal cells.
_________________________________________________________________________
2 Complete the following sentences by selecting from the words below.
dissolved
equal
high
low
membrane
[5 marks]
wall
Diffusion from one cell to another occurs when the two cells have a difference in
concentration of _____________ substances. Substances can diffuse across
the cell _____________.
The overall direction of diffusion is from a cell with a ___________ concentration of
particles to a cell with a ___________ concentration of particles. Diffusion continues
until the concentration of particles in both cells is _______________.
3 Carbon dioxide can diffuse into and out of plant cells.
[3 marks]
Complete the following sentences.
Carbon dioxide diffuses into a plant cell when there is ___________ carbon dioxide
outside the cell than there is inside.
Carbon dioxide diffuses out of a plant cell when there is ___________ carbon dioxide
outside the cell than there is inside.
Carbon dioxide is more likely to diffuse into a plant cell in the daytime than the night time,
because ___________ only happens in the daytime.
Total marks ______ /10
Year 7 Cells
Cells 5: Unicellular organisms
1 Figure 1 shows an amoeba. Amoeba is an example of a unicellular organism.
(a) Define unicellular.
[4 marks]
Figure 1
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________
(b) Label the following cell parts in the
boxes in Figure 1.
Nucleus
Cytoplasm
Cell membrane
2 Unicellular organisms take in nutrients from their environment.
[2 marks]
Describe how the nutrients enter the cell.
_________________________________________________________________________
_________________________________________________________________________
3 Some unicellular organisms have adaptations to their structure. What is an adaptation?
[2 marks]
_________________________________________________________________________
_________________________________________________________________________
4 The paramecium in Figure 2 is a unicellular organism.
Figure 2
There are hair-like structures called cilia on the
cell’s outer surface.
State the function of the cilia.
_________________________________________________________________________
_________________________________________________________________________
[1 mark]
Year 7 Cells
5 Give one other example of an adaptation in cell shape of a unicellular organism.
[1 mark]
_________________________________________________________________________
_________________________________________________________________________
Total marks ______ /10
Year 7 Cells
Cells 6: Cells, tissues and organs
1 Some organisms have more than one cell.
[4 marks]
Write the following structures in order of size from smallest to largest.
cells
organ
organism
organ system
tissue
______________ ______________ ______________ ______________ ______________
smallest
largest
2 Give the name for organisms that have more than one cell.
[1 mark]
_________________________________________________________________________
3 Draw one line to match each structure to the correct definition.
[3 marks]
Structure
Definition
Organ
A group of cells working
together to do the same job
System
A group of different organs
working together to do the
same job
Tissue
A group of different tissues
working together to do the
same job
4 State whether the following are cells, organs or tissues.
(a) Eye
__________________________
(b) Sperm
__________________________
[2 marks]
Total marks ______ /10