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Worksheets3.4 Cellular Transport
Total questions: 20
Worksheet time: 31mins
Osmosis
Movement of water across a semipermeable membrane
Diffusion
Movement of moleules across a semipermeable membrane
Passive transport
Has three types of movement without the use of ATP
What are the characteristics that a molecule must have to pass through the cell membrane?
No charge to them.
Small and large molecules such as water and glucose.
Require Energy to pass.
Do not require energy to pass.
If a person's blood cells shrivel (shrink) their blood is likely ____ in comparison to the cell.
isotonic
hypotonic
hypertonic
During osmosis
water moves from high to low concentration
large or oddly shaped molecules move across a cell membrane
water moves when energy is used
proteins are built
Osmosis is the movement of _____ across a membrane.
food
energy
oxygen
water
why is osmoregulation so important?
water gives support and is an important transport medium
it hydrates the body
it regulates hormone secretion
Nemo and other ocean dwelling fish cannot survive in freshwater because......
freshwater is hypertonic to Nemo's cells and will result in water leaving them causing the cells to shrink
freshwater is hypotonic to Nemo's cells and will result in water leaving them causing the cells to shrink
freshwater is hypertonic to Nemo's cells and will result in water entering them causing the cells to swell and burst
freshwater is hypotonic to Nemo's cells and will result in water enter them causing the cells to swell and burst
If the dots represent sugar what direction will the water flow?
Into the cell
Out of the cell
Both equally (equilibrium)
If the % represent % of sugar, what direction will water flow?
Into the cell
Out of the cell
Both equally (equilibrium)
Tonicity deals with the presence of solutes that cannot easily pass the cell membrane. Is water a solute?
yes
no
In which solution the cell happy and in a state of equilibrium?
hypertonic
hypotonic
isotonic
Movement of SOLUTE through the cell membrane from high to low concentration is called.....
diffusion
active transport
facilitated diffusion
osmosis
Which Type of solution is the middle cell placed in?
Hypertonic
Hypotonic
Isotonic
Robotonic
Which molecule is in equilibrium? How can you tell?
Molecule A; equal amounts inside and outside
Molecule B; passive movement into the cell
Molecule C; equal amounts inside and outside
Molecule C; all molecules are inside the cell
Which of the following processes could result in the net movement of a substance into a cell if the substance is more concentrated in the cell than in the surroundings?
active transport
osmosis
diffusion
facilitated diffusion
White blood cells (WBCs) are more resistant to lysis than are red blood cells (RBCs). When looking at a sample of blood for WBCs, what could you do to reduce the interference from RBCs?
Mix the blood in a salty solution to cause the RBCs to lyse
Mix the blood in a hypotonic solution to cause the RBCs to lyse
Mix the blood in a hypertonic solution to cause the RBCs to lyse
Mix the blood in an isotonic solution to cause the WBCs to float on top
Match the following cells in solutions to their outcomes:
Animal cell placed in hypertonic solution
Shrivel
Animal cell placed in hypotonic solution
Lyse
Plant cell placed in hypertonic solution
Plasmolysis
Plant cell placed in hypotonic solution
Turgid
Plant cell placed in isotonic solution
Flaccid
