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WorksheetsCell transport summative
Total questions: 107
Worksheet time: 1hrs 17mins
What are the two types of cell transport?
Passive and Active
Active and Facilitated
Passive and Facilitated
None of the above
In passive transport, substances move across the cell membrane ________ the concentration gradient
AGAINST
ALONG
WITH
BETWEEN
Which example describes diffusion?
Water moving across a semi-permeable membrane
Baking cookies and smelling them throughout the house
Ions moving through an ion channel
All of the above
What macromolecule is embedded into the lipid bilayer and helps to transport molecules?
Carbohydrate
Lipid
Protein
Nucleic Acid
Which describes a hypotonic environment?
Too much water in the cell will cause the cell to burst - the percentage of water is higher outside the cell than inside the cell
Too little water in the cell will cause the cell to shrink - the percentage of water is lower outside the cell than inside the cell
Concentrations of water are equal inside and outside the cell
Which describes a hypertonic environment?
Too much water in the cell will cause the cell to burst - the percentage of water is higher outside the cell than inside the cell
Too little water in the cell will cause the cell to shrink - the percentage of water is lower outside the cell than inside the cell
Concentrations of water are equal inside and outside the cell
Which describes an isotonic environment?
Too much water in the cell will cause the cell to burst - the percentage of water is higher outside the cell than inside the cell
Too little water in the cell will cause the cell to shrink - the percentage of water is lower outside the cell than inside the cell
Concentrations of water are equal inside and outside the cell
The movement of particles from an area of high concentration to an area of low concentration
active transport
osmosis
diffusion
random movement
When material passes into and out of a cell at equal rates and there is no difference in concentration between the inside and outside of the cell, the cell is in a state of...
dynamic equilibrium
diffusion
osmosis
active transport
If a cell is placed in an environment with MORE oxygen OUTSIDE the cell than inside, the cell will...
gain oxygen
lose oxygen
gain water
lose water
The movement of materials that does NOT require energy is called...
active transport
passive transport
massive transport
proactive transport
The movement of materials that requires energy is called...
active transport
passive transport
massive transport
proactive transport
The movement of materials from an area of low concentration to an area of high concentration would require...
glucose
energy (ATP)
fish
chips
A process in which cells surround and engulf substances that are TOO BIG to enter the cell is known as...
Pinocytosis
Phagocytosis
Endocytosis
Receptor-mediated
When a cell forms a vesicle around unwanted particles and expels it OUT of the cell.
Pinocytosis
Endocytosis
Receptor-mediated
Exocytosis
when some molecules can cross the membrane while others cannot.
-diffusion
-osmosis
-facilitated diffusion
Which choice correctly identifies the process responsible for the movement of each type of molecule represented in the diagram?
Oxygen = active transport
Oxygen = diffusion
Oxygen = active transport
Oxygen = diffusion
Which CELL contains MORE particles than are found in the surrounding solution?
Left
Center
Right
Examine the diagram and determine, based on the concentrations of salt, if salt will move into or out of the cell.
INTO
OUT OF
What is the definition of OSMOSIS?
Diffusion of water through a selectively permeable membrane
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Movement of molecules across the cell membrane against the concentration gradient
Movement of molecules across the cell membrane from an area of high concentration to low concentration
What is the definition of LIPID BILAYER?
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Movement of molecules across the cell membrane against the concentration gradient
Diffusion of water through a selectively permeable membrane
Movement of molecules across the cell membrane from an area of high concentration to low concentration
What is the definition of ACTIVE TRANSPORT?
Movement of molecules across the cell membrane against the concentration gradient
Diffusion of water through a selectively permeable membrane
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Movement of molecules across the cell membrane from an area of high concentration to low concentration
Identify the following structure
Phospholipid
Cell
Cell membrane
Protein
What is the name of 'A' found on the structure below
Lipid Bilayer (cell membrane)
Protein
Phosphate hydrophilic heads
Lipid hydrophobic tails
What is the name of 'B' found on the structure below
Protein
Lipic bilayer
Phosphate hydrophilic heads
Lipid hydrophobic heads
What is the name of 'C' found on the structure below
Phosphate hydrophilic heads
Lipid hydrophobic tails
Lipid bilayer
protein
What is the name of 'D' found on the structure below
Lipid hydrophobic tails
Protein
Lipid bi layer
Phosphate hydrophilic heads
Which answer correctly describes the lipid bilayer?
lipids are hydrophobic; phosphates are hydrophobic
lipids are hydrophilic; phosphates are hydrophilic
lipids are hydrophobic; phosphates are hydrophilic
lipids are hydrophilic; phosphates are hydrophobic
Why would the cell need energy to move molecules across the membrane?
the molecule is going against the concentration gradient
the molecule is to large to pass through the membrane
the lipid membrane requires energy anytime something is moving across the membrane
In passive diffusion, substances always move...
from an area of higher concentration to an area of lower concentration
from an area with more of the molecules to an area with fewer of the molecules
from an area of lower concentration to an area of higher concentration
from an area with fewer of the molecules to an area with more of the molecules
What is the definition of FACILITATED DIFFUSION?
Movement of molecules across the cell membrane from an area of high concentration to low concentration
Diffusion of water through a selectively permeable membrane
Movement of molecules across the cell membrane against the concentration gradient
Molecular structure that surrounds the cell and controls what enters and leaves the cell
The following cells have been placed in different solutions.
Make a prediction of what will happen.
(check all that are correct)
Isotonic-- the cell will maintain size
hypotonic-- the cell will increase in size
hypertonic-- the cell will decrease in size
Why are diffusion and osmosis important to cells?
It allows them to take in materials/substances without using energy.
It allows them to reproduce.
It allows them to absorb sunlight.
It allows cells to use all energy.
What does selectively-permeable mean?
Allow certain things to enter and leave the cell
Nothing gets through
The cell lets only large substances through
Passive transport requires ________________
concentration gradients
no energy
motion
energy
The diffusion of particles through the cell membrane from high to low concentration is called ....
exocytosis
active transport
passive transport
osmosis
When the smell of perfume spreads throughout a room, it is an example of ....
passive transport
diffusion
active transport
osmosis
If a gummy bear is placed in salt water, the mass of the gummy bear will decrease because water will move out of the gummy bear. What process does this represent?
osmosis
fermentation
respiration
diffusion
