Living Things And Cells Third Year Revision Flashcards
A plant is a living organism which makes its own food.
They are often called what?
Producers
When an animal relies on plants or other animals for its food.
They are often called what?
Consumers
What are animals with a backbone called?
Vertebrates
What are animals with no backbone called?
Invertebrates
What are the 7 characteristics of living things
Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition
Eyepiece Lens
You look through this to see the object magnified.
Focus knob
This brings objects into focus by lowering or raising the stage.
Objective lens
Three different lenses give different magnifying power
Stage
This is where the object is placed
Light source
Can either be a light or a mirror reflecting sunligh
What are cells?
• The unit of every living thing is called a cell
• Animal cells and plant cells are differen
Nucleus
Nucleus: Controls the Cell
Nucleus
Nucleus: Controls the Cell
Cytoplasm
Fluid in which minerals and salts are dissolved
Cell membrane
Thin layer that controls what enters and leaves the cell.
Vacuole
Vacuole: A space to store food for the cell
Cell Wall
Cell Wall: Provides a tough outer layer for protection.
How are living things organised
• Cells reproduce several times.
• A group of cells which does the same job is called tissue.
• An organ is a group of tissue that work together to do a job.
• A system is a group of organs that work together
Length or distance (larger)
Meter stick
Time
Pendulum
Volume
Graduated cylinder
Temperature
Thermometer
Mass
Weighing scales
