Who Am I ?

1
Who Am I ?
2
Learning Outcomes What will I learn today?

• I will learn-
• What words scientists use to describe living
  things.
• What animal cells are like
• What plant cells are like
• What the differences are between plant and animal
  cells

3
How can you tell if something is living?

• Working in pairs, write down five ways you might
  tell if something is alive.
• Come together with another pair and compare your
  lists.
• Report back which ideas were the same and which
  ideas were different.

4
Seven Characteristics of Life

• Movement

• Respiration

• Sensitivity

• Nutrition

• Excretion

• Reproduction

• Growth

5

• We can remember this as-
• MRS NERG

Movement
Respiration
Sensitivity
Nutrition
Excretion
Reproduction
Growth
6
In order to be classed as alive, an object must
do all seven of these things.
Eg. Is this object living? Remember to think
about all seven characteristics!
7
Plant and animal Cells
In pairs look at the diagrams of the plant and
the animal cell. Do you notice any differences?
Be prepared to describe them to the class!
8
The Animal Cell
Cell Membrane
Cytoplasm
Nucleus
9
The Plant Cell
Cell Membrane
Cytoplasm
Permanent Vacuole
Nucleus
Chloroplast
Cell Wall
10
Differences between plants and animal cells
Copy and complete the table below
Part of cell Found in animal cell Found in plant cell
Cell nucleus ? ?
Cell membrane

11
Review Can I-

• List the seven characteristics of living things?
• Label an animal cell?
• Label a plant cell?
• Describe the differences between plant and animal
  cells?

12
Learning Outcomes What will I learn today?

• I will learn-
• How to use a microscope.
• How to prepare onion cells for viewing under a
  microscope
• Work out magnification
• Find out about the size of cells

13
The Microscope
A microscope is used to make things look bigger.
14
The Microscope
Eye piece
Lens
Focus Knob
Stage
Mirror/Lamp
15
Magnification
Magnification eye piece magnification x lens
magnification
16
Making an Onion Slide
17
How big are cells?

• http//www.cellsalive.com/howbig.htm

18
Review Can I-

• Label a diagram of a microscope?
• Make a slide of onion cells?
• Use a microscope to look at cells?
• Work out the magnification of the microscope?
• Appreciate how small cells really are?

19
Learning Outcomes What will I learn today?

• I will learn-
• That cells do different jobs
• Cells are the right shape for their jobs
• The names of different cells
• That cells can work together to build organisms

20
Special Cells for Special Jobs

• Some cells have special jobs to do and they have
  special features which help them to do this.
• We say they are specialised.

Use the following web site to complete the your
worksheet- BBC - Schools - KS3 Bitesize -
Science - Biology - Cells
21
Cells work as part of a team

• Few cells work by themselves.
• Similar ones come together to do a particular
  job. They form a tissue e.g. muscle cells form
  muscle tissue

22

• Different tissues come together to form organs.
• Name the organs below-

23

• Organs work together in organ systems, e.g.

Circulatory system
Respiratory system
24
Examples

• circulatory system
• respiratory system
• digestive system
• nervous system
• reproductive system
• excretory system

25
Review Can I?

• Name some specialised plant and animal cells?
• Describe what makes these cells good at their
  jobs?
• Explain what a tissue is and give an example?
• Give an example of an organ and organ system?

26
Review

• Summarise what you have learned in this topic in
  one of the following ways-
• Mind map
• Table
• List of key words