Cell Theory
What is the easiest way to determine if a cell is prokaryotic or eukaryotic if you have a microscope.
What if you don't have a microscope.
If it has a nucleus or not.
If no microscope, the size difference can tell you what type of cell it is.
Which organelle transports things either within a cell or out of the cell?
Endoplasmic Reticulum
Remember: transportER (ER - endoplasmic reticulum)
What are two organelles that help shape and support the structure of the cell.
Cell Membrane
Cyotskeleton
Cell Wall
What is the transfer of energy for photosynthesis?
Light/Radiant energy --> Chemical energy
This type of cell does NOT have a nucleus.
Prokaryotic
A new neuron cell was created from a stem cell. Does this align with the 3 cell theory tenets? If yes, which one?
Yes. All cells come from pre-existing cells.
True or False.
If a cell doesn't have a cell membrane, it is not considered a cell.
True
What does the mitochondria do? What is this process called?
Creates energy through respiration.
Where does photosynthesis occur? Where does respiration occur?
Photosynthesis - Chloroplast
Respiration - Mitochondria
A cell has cellulose, DNA, nucleus, mitochondria, and chloroplasts. What type of cell is this?
Does the cell theory tell us where the very first cells came from?
No, only that they came from pre-existing cells.
What makes the rough endoplasmic reticulum "rough"?
Ribosomes
What do lysosomes do? What would happen if we had no lysosomes?
They get rid of bad, broken, dead things. If we didn't have lysosomes, the bad stuff would remain in the cell and the cell would probably eventually die.
What is the equation for photosynthesis?
CO2 + H2O --> C6H12O6 + O2
When a chemical reaction is finished and there is leftover energy, where does it go?
It is lost as heat.
What are the 3 cell theory tenets?
All living things are made of cells.
Cells are the basic unit of life.
All cells come from preexisting cells.
What are the four things that all cells have?
Cell Membrane
Ribosomes
Genetic Material (DNA or RNA)
Cytoplasm
Why would one type of cell (for example muscle cell) have more mitochondria than another type of cell (for example blood cell).
The cell with more mitochondria requires more energy.
You have a fish tank that only has plants. Which is occurring: photosynthesis, respiration, or both.
Both. Only plants go through respiration but all living things undergo respiration.
Why do cells have different shapes (why is a muscle cell shaped differently than a heart cell)?
The have different functions.
If only 50% of the energy in glucose is converted to ATP (during respiration), what happens to the other 50%?
It is converted/lost as heat energy.
What does a ribosome do?
Makes proteins
What does the central vacuole in a plant do?
Maintains turgor pressure (the pressure between the cell membrane and the cell wall).
Where does photosynthesis happen in a plant?
The leaves (remember the stomata!). It does not happen in the roots. Why?
If the stomata on a plant are closed what process is going to be slowed down?
Photosynthesis