Cell Membrane Transport
Diffusion happens anytime there is a difference in concentration in one place compared to another. This is called what?
What is concentration gradient
During passive diffusion, energy is what
What is not required
It is a process where the cell becomes specialized
What is cell diffrentation
Where does transcription occur
in the nucleus
The structure that regulates what enters and exits the cell?
What is the cell membrane
During diffusion, molecules move from a _____ concentration to a ______ concentration
What is high to low concentration
What grabs molecules, changes shape, and flips across to the other side like a revolving door
What is carrier protein
A stem cell is "undifferentiated", which means what
Where does translation occur
what is the ribosome in the cytoplasm
Diffusion continues until the concentration is equal in the space
What is equilibrium
What creates a tunnel through which molecules can pass
What are channel proteins
True or False: Right after egg and sperm cells have fused, the fertilized cell makes copies that are each specilaized or differenitataed
What is the purpose of this process
What is cell growth and repair
The movement of water molecules across a cell membrane
What is osmosis
Na+, Cl-, Ca++, and K+ are examples of molecules that go through what kind of channel
What are ion channels
About how many different cell types are in the human body
what is over 200
Seperated into 2 strands
Proteins that allow water molecules to get past the hydrophobic middle of a membrane
What are aquaporins
What is an example that is helped by carrier proteins?
What is glucose
What makes Embryonic Stem Cells so special
it can become any cell in the body
An_______ strand is built from_____
What is mRNA and DNA