The cell membrane
What is a main job of the cell membrane?
To protect the contents of the cell.
What are the gates inside the cell membrane called?
What is carries proteins
Where do cells get energy?
from food eaten, light from the sun
To make a copy of
STEP ONE
The nuclear membrane disappears
What is a main job of the cell membrane?
To control what goes in and out > This keeps the nucleus in healthy condition.
What are carrier proteins?
They are gateways that control the movement and nutrients in and out of the cell.
What is cellular respiration?
a chemical energy in the cell.
How does cancer occur in the body?
when mitosis goes wrong. when a cell is copied improperly. > damaged DNA can produce cancer cells
STEP TWO
Our DNA divide into 2 identical sets
Why is the membrane special?
It is selectively permeable.
What is the first step of active transport?
The carrier proteins take in particles that cant fit through the membrane.
what things are needed in cellular respiration?
oxygen, carbohydrates and water
What is it called when cells split?
What is mitosis
STEP THREE
The two sets separate to different parts of the cell
How do things move in and out of the cell?
Through a process called diffusion > a spreading of particles.
What is the second step of active transport?
The particle is broken into smaller bits.
What things are released?
Carbon dioxide, water, and ENERGY!
What are the 3 treatments for cancer?
Chemotherapy, radiation, and surgery
STEP FOUR
The nuclear membrane reappears.
Why do particles diffuse?
Particles in an area of high concentration move to areas of low concentration > requires no energy.
What is the third step of active transport?
The particle is released into the cell
Where does it happen in the cell?
in the mitochondria
Why do we have specialized cells?
Different cells are used for different functions.
STEP 5
Finally the cells split into two (2) identical daughter cells.