What do most human and animal cells contain?
A nucleus, cytoplasm, cell membrane, mitochondria and ribosomes
What is the job of the nucleus?
Control the activities of the cell
What is the job of the cytoplasm?
It is where most of the chemical reactions take place
What is the job of the cell membrane?
Controls the passage of substances into and out of the cell
What is the job of the mitochondria?
Where most energy is released in respiration
What is the job of the ribosomes?
Where protein synthesis occurs
What do plant cells contain that human cells do not?
Cell wall, chloroplasts and a permanent vacuole
What is the job of the cell wall?
Strengthen the cell
What is the cell wall made out of?
What is the job of the chloroplasts?
Absorb light energy to make food
What is the permanent vacuole filled with?
What does a bacterial cell consist of?
Cytoplasm and a membrane surrounded by a cell wall
Where is the genetic material in a bacterial cell?
Floating in the cytoplasm, not in a nucleus
What does the nucleus contain?
What is yeast?
A single celled organism
What do yeast cells consist of?
A nucleus, cytoplasm and a membrane surrounded by a cell wall
What can cells be to carry out particular functions?
How can dissolved substances move in and out of cells?
What is diffusion?
The spreading out of particles from an area of high concentration to an area of lower concentration
What increases the rate of diffusion?
A greater difference in concentration
Oxygen passes through cell membranes by…