Challanges
What does the golgi apparatus do?
Modifies, sorts, and packages proteins.
What is diffusion?
movement of particles from high concentration to low concentration
What does the endoplasmic reticulum (ER) do?
Helps make and transport proteins and other materials.
What is building and repairing cells and performing many cell functions?
proteins
Which macromolecule is most important for storing energy for long periods?
lipids
Why is facilitated diffusion different from simple diffusion?
facilitated diffusion uses membrane proteins to help particles cross the membrane.
What is osmosis?
movement of water across a cell membrane
What do ribosomes do?
make proteins
What are nucleic acids?
DNA and RNA, which store and carry genetic information
a molecule made of amino acids. Which macromolecule is it?
protein
Why is the nucleus often called the control center of the cell?
It contains DNA and controls many cell activities.
What is the movement of particles through membrane proteins from high to low concentration.
facilitated diffusion
What do mitochondria do?
produce energy from the cell
What are the four major macromolecules?
Carbohydrates, lipids, proteins, and nucleic acids.
If the cell membrane loses its ability to control what enters and leaves, which organelle has been damaged?
cell membrane
A person needs quick energy before exercising. Which macromolecule would be the best source?
carbohydrates.
Which transport processes require energy?
Active transport
What does the cell membrane do?
controls what enters and leaves cell
What are lipids used for?
Long-term energy storage and making cell membranes.
If the mitochondria stopped working, what would happen to the cell?
the cell would have much less usable energy
A muscle cell needs to repair damaged tissue which macromolecule is especially important?
proteins
What is passive transport?
Movement across the cell membrane that does not require energy.
What does nucleus do?
controls the cell and contains DNA
What are carbohydrates used for?
Quick energy.
A cell has damaged ribosomes which major cell function would be affected?
protein prodeuction