Cell Theory
Does a rock have cells? Why?
No! It is not living!!!
True or false: Only a multicellular organism is living.
False!
What is the nucleus?
The control center of the cell
Contains the DNA
Found only in multicellular organisms
What organelle is the like the walls of the sports stadium?
Cell membrane
Do single-celled organisms have organelles?
No. All jobs/functions must be performed by that single cell in order for the organism to survive.
True or false: If you can't see it with the naked eye, than it is not living.
FALSE! Many living organisms are too small to be seen with the naked eye.
Give 3 examples of multicellular organisms.
Plants
Bear
Human
What are chloroplasts?
Capture energy from the sun and covert it into food for plants.
Found in plants only
Which organelle is the control center or the brain?
Nucleus
Why are there different organelles in a cell?
So the jobs/functions can be split up and the whole thing can work to better the whole.
True or false: An object does not move, therefore, it is not living.
False! This is NOT how we determine if an organism is living or not.
Give 2 examples of unicellular organisms.
Yeast
Bacteria
Where is the endoplasmic reticulum found?
In multicellular organisms around the nucleus.
Both in plants and animals
What organelle is like a solar panel?
Chloroplasts
Why do humans have more cells and not bigger cells than mice?
Because there is a limit to cell size. This is restricted by the time it takes materials to reach all parts of the cell.
What are the 3 parts of the cell theory?
- All living organisms are made from one or more cells
- All cells come from existing cells
- Cells are the building blocks of life
What kinds of cells are able to grow and repair a cut?
Multicellular; cell division helps repair the wound and allow the organism to grow
What do plants have the animals do not in terms of organelles?
Cell Wall
Chloroplasts
Vacuoles
Our feet provide us to move. What organelle does this for cells?
Flagellum
Cells have to remain small in order to survive. Why?
So that nutrients can enter all parts of the cell and wastes leave the cell faster enough to support the organisms functions.
How can we prove the parts of the cell theory are true?
With the aid of a microscope. This allows us to see cells are in living organisms and we could watch cells divide.
If you have a closed dish with one desmond in it and you check back 10 days later and there are 10 desmonds, what can you conclude happened?
They reproduced somehow.
What organisms are the cell membrane and cell wall found in? Why do both exist?
Cell membrane is found in all cells (single, multi - plant and animal). Cell wall is found only in plants.
Membrane: allows only certain materials to enter (they can't be too big or are denied as well)
Wall: extra support for plants to keep them standing tall
Which organelles are involved in the making of proteins and transporting of those proteins??
(HINT: the golden packer, transporter, and one makes some nice proteins.)
Golgi Apparatus, E.R., and ribosomes
If I were to observe a tree and all the cells involved with the tree, what would I have to look at?
Part of the leaf, stem (trunk), and root. This would show me all the different types of cells that the tree contains.