How does it work?
True or False
In Passive Transport molecules move from low to high concentration
False
True or False
Active Transport moves AGAINST the concentration gradient
True
What is the main component of the cell membrane?
A solution that causes a cell to gain water is called a _______________________
Hypotonic solution
If the mass of any of the bags decreased in our osmosis lab, why would this likely have occurred?
The bag leaked.
Active transport
Facilitated Diffusion
Facilitated diffusion is a type of active transport. True or False.
False
What type of Cells contain membranes?
All
In a hypertonic solution, a plant cell will lose water. This is called____________.
plasmolysis
What is the key factor that we employed in the osmosis lab to establish the solution colors and dictate the rate of diffusion
The size of the concentration gradient.
Name 2 molecules that can pass through the lipid bilayer through simple diffusion. Why?
carbon dioxide and Oxygen
They are non-polar
What was the memory clue for Exocytosis?
Exo=Exit
What type of proteins are on the inside or outside surface of the cell membrane?
periferal
Osmosis is a combination of these 2 types of transport.
Simple and facilitated diffusion.
Why can egg cells be larger than other cells and still survive?
Name Any polar molecules or ions
When is exo and endocytosis used?
when there are large Amounts of molecules that need to be transported.
The purpose of cholesterol in ________cells is __________________________
maintain fluidity in temperature changes.
A cell with a 5% salt solution is placed into a beaker with a 10% salt solution. What will happen?
You have access to two different types of cells: 0.5cm, cuboidal cells with edges measuring 0.5cm each, and elongated (rectangular prism) cells with a length of 1 cm and a width and height of 0.5 cm each. Which will have better diffusion efficiency? use numbers to justify your answer.
The cube. The SA: V of the cube is 12 while the other is either 9 or 10 (depending on interpretation of dimensions, so the cube is more efficient
If there is higher amount of sugar in your blood than in your cells, what type of transport will happen and where will the sugar go?
Facilitated diffusion
Into the cell.
Describe a situation where any type of active transport would be used in an organism.
Answers vary
In multicellular organisms, the cell membrane is attached to this on the outside of the cell.
The extracellular matrix
Name the proteins involved in Osmosis.
Aquaporins
Name a part of the human body where high surface area to volume ratio is especially important. Why?
Answers vary.