Cell organisation Flashcards
What is a tissue?
A group of cells working together.
What is an organ?
An organ is a group of tissues working together.
What is a multicellular organism?
It is when a group of organs work together.
How cells are organised?
Cells-tissues-organs-organ systems-organism
What is diffusion?
Its when a substance moves from a place of high concentration to a place of low concentration.
What is a high concentration area?
It is a when there are many particles in one place.
What is a low concentration area?
It is when there are not a lot of particles in one place.
Why do gases diffuse faster than liquids and solids?
Gas diffuses faster because gas particles have more energy. Solids diffuse very slowly because the the particles just vibrate.
Why does temperature affect how fast particles diffuse?
Particles diffuse faster when the temperature increases because the particles gain more energy so they move faster.
How does the size of the particle affect how fast particles diffuse?
The bigger the particle is the heavier the particle gets. When the particles are heavy they will need more energy to move faster.
