Download Cells Test 1 Review KEY File

Cells Test 1 Review
1. Describe how the pant cells appeared in the microscope. Rectangular and organized like a
brick wall. Plant cells had a nucleus and cell walls visible
2. What type of cell is a plant cell? Plant cells have a nucleus, therefore all plant cells are
eukaryotic
3. What are characteristics of plant cells that make them different from animal and bacterial
cells? What is the shape of a plant cell? Plant cells are different from animal cells because
they use solar energy to create carbohydrates. In other words, they use sunlight to make
glucose. They are also different in structure from animal cells because they have a cell
wall. Plant cells are different from bacteria because plant cells have a nucleus and
bacteria do not.
4. Describe how the animal (cheek) cells appeared in the microscope. What shapes were the
animal cells? Cheek cells were a circular shape and you could see a dark nucleus in the
middle. The animal cells were scattered throughout the slides.
5. What type of cell is an animal cell? All animal cells have a nucleus, therefore all animal
cells are eukaryotic
6. What are the characteristics of animal cells? Animal cells have a cell membrane and are
round with a nucleus.
7. All cells that contain a nucleus are categorized as what type of cell? Eukaryotic
8. All cells that do not contain a nucleus are categorized as what type of cell? Prokaryotic
9. The cell theory states that: Need to be able to identify the parts of the cell theory
A. All living things are made of cells
B. All cell come from other cells
C. Cells are the basic units of life (nothing that is “functionally alive” exists in a
more simple unit than a cell)
10. The cell membrane is made of non-polar lipids. Which biomolecule is used as the canals
to get necessary molecules in and out of the cell through the lipids? The Protein channels
called transport proteins are embedded in the lipids and these proteins help transport
important molecules into the cell and excrete waste products.
11. What is the job of the plasma membrane? The plasma membrane is the gate keeper of the
cell; it controls what can come in and out of the cell. This is important because it is how
the cell maintains homeostasis.
12. What would happen to a cell that did not have a fully functional plasma membrane? If the
cell membrane was not functioning, it would decrease the movement of molecules into
and out of the cell.
13. What is it that cells cannot grow too large? If the inside of the cell is too large, the cell
membrane cannot move enough molecules into and out of the cell to keep it healthy.
14. What is osmosis? Movement of water across a membrane is osmosis. This is caused by a
difference in concentration of a solute in the solution, or in the cell. This is the reason a
person with swollen gums can swish with salt water to reduce the swelling.
15. Be able to look at a picture of a cell in a beaker with different concentrations inside and
outside the cell and determine the direction the water will flow during osmosis. (Use
osmosis practice)