Cell Membrane
What is diffusion?
molecules move across the membrane (high to low concentration), using no energy, with the gradient.
What is a solute?
Molecule being dissolved
List the stages of mitosis in order
PMAT
G1, S, G2, Mitosis, Cytokinesis
What is another name for the phospholipid bilayer?
Cell membrane or plasma membrane
What is osmosis?
What is a solution?
Substance doing the dissolving
What happens during cytokinesis?
the cytoplasm splits and it creates 2 new cells
What happens during interphase?
the cell grows and copies DNA
What does it mean to be selectively permeable?
Allows certain things in and out of the cell
What do we use endocytosis and exocytosis for in a cell?
Moving large particles in and out of the cell
If a cell has 70% solute and the solution has 30% solute, which direction is the water moving?
The water moves into the cell.
What is the purpose of mitosis?
splitting the nucleus and chromosomes evenly
Why does a cell need checkpoints?
to make sure all is correct in the cell
What cell part allows particles to diffuse across the membrane?
Integral proteins
What is active transport?
Movement of molcules, against the gradient, using energy.
A cell has 70% solute and the solution has 30% solute. Is the cell hypotonic, isotonic, or hypertonic to the solution?
Hypertonic
Why do chromosomes need to line up in metaphase?
So the chromosomes can split evenly
What is the purpose of the cell cycle?
to create 2 identical cells
What is the purpose of cholesterol?
To give the cell stability
What type of transport does your cell want to use? Expain.
Passive transport because it doesn't require energy.
If a cell has an equal concentration of solute to the solution, what happens to the water?
The water moves freely, but in equal concentration.
Is mitosis a part of interphase?
no
What regulates the cell cycle?
tumor suppressor genes