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WorksheetsCell Membrane Structure & Function Test
Total questions: 66
Worksheet time: 54mins
What controls the passage of materials inside and outside of the cell?
Cell membrane
Cytoplasm
Cell wall
Endoplasmic reticulum
What is the structure labeled "H"?
Cholesterol
Peripheral protein
Integral (channel) protein
Carbohydrate
The ability to allow only certain molecules into or out of the cell is called -
Unpermeable
Semipermeable
Impermeable
Permeable
What substance on the outside of the cell membrane is used in signaling and identification?
Carbohydrate
Proteins
Cholesterol
Phospholipid
Which of the following are embedded in the phospholipid bilayer and help substances pass through?
Carbohydrates
Cholesterol
Lipids
Proteins
Which of the following molecules pass easily through the cell membrane, WITHOUT A PROTEIN OR ENERGY? Select all that apply.
Sodium (Na+)
Oxygen
Glucose
Carbon dioxide
"Water Loving"
Hydrophobic
Hydrophilic
Hydrolovic
Hydroelectric
What term could you apply to letter "A"?
Dual membrane
Phospholipid bilayer
Phospholipid monolayer
Phosphate bilayer
Which of the following molecules don't pass easily through the cell membrane, and exclusively REQUIRE A PROTEIN AND ENERGY?
Oxygen
Carbon dioxide
Sodium (Na+)
Glucose
Which of the following is the function of the cell membrane? Select all that apply.
Breaks down waste and other compounds.
Regulates the passage of compounds in and out of the cell.
Provides instructions to the cell and other organelles.
Allows cells to communicate and interact with other cells.
Protects the cell from its environment.
"F" is pointing to what?
The hydrophobic region of the cell membrane
The hydrophilic region of the cell membrane
What is the structure labeled "B"?
Carbohydrate
Peripheral protein
Integral (channel) protein
Cholesterol
Which is NOT a function of the phospholipid bilayer?
creates a barrier
semi-permeability of the membrane
transport of molecules
separates internal from external environment of the cell
Which is the role of cholesterol in cell membranes?
communication between cells
control of transport
control of fluidity of membrane
enhances the fluidity of the membrane
_____________ is the free movement of particles or molecules across the membrane to spread out evenly into the available space.
diffusion
facilitated diffusion
active transport
fusion
The general name for movement of substances across cell membranes without need of energy input.
passive transport
active transport
Some cells move large particles out of the cell through the process of:
Protein Synthesis
Endocytosis
Exocytosis
Cytoplasmic Streaming
A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails.
cholesterol
glycoprotein
phospholipid
glucose
What happens to an animal cell when it is placed in HYPERTONIC solution?
cell swells and bursts
shrinks from water loss
nothing happens
solute moves in and out
A cell containing 80% water and 20% solute, and a solution containing 60% water and 40% solute. What type of solution is this?
hypertonic
isotonic
equilibrium
hypotonic
Plant cells will become turgid when placed in this type of solution.
hypertonic
isotonic
equilibrium
hypotonic
What is the difference between active and passive transport?
cells only do active when they move
only cells with mitochondria carry out active transport
active transport require ATP, passive transport does not
eukaryotes do active transport, prokaryotes do passive transport
For 5 points:
In your own words, explain briefly what happens to a cell with 70% water when it is immersed in a 30% water 70% salt solution.
Which way will the water molecules move during osmosis?
Into the cell, so the cell shrinks.
Out of the cell, so the cell shrinks.
Out of the cell, so the cell swells.
Into the cell, so the cell swells.
The picture is an example of...
active tranport
diffusion
passive transport
osmosis
Phagocytosis is
the process in which extensions of cytoplasm surround and engulf large particles and take them inot the cell
a type of active transport
a process that involves energy
all of the answers are correct
They form channels and pores that move molecules across the membrane
Integral proteins
Peripheral membrane proteins
Lipid-anchored membrane proteins
They are located entirely outside the lipid bilayer.
Integral proteins
Peripheral membrane proteins
Lipid-anchored membrane proteins
When Red Blood cells is put in a hypotonic solution, it will _______________.
Shrink
Not change size of the cell
swell and perhaps burst (lyse)
cause size of the cell will change from large to small and from small to large
If two solutions have the same solute concentration and the same water concentration, they are said to be ___________ to each other.
Hypotonic
Isotonic
Hypertonic
Proteotonic
Which of the following BEST describe the picture shown above ?
phagocytosis
pinocytosis
exocytosis
receptor mediated endocytosis
Which substance is required for the movement of substances across the membrane when going against the concentration gradient ?
(a)
Osmosis is the diffusion of water across a semi-permeable membrane. The water will move across the membrane where there is a lower concentration of water and a higher concentration of (a)
(a) is a reverse of endocytosis where intracellular vesicles formed by golgi apparatus transport cells products out of the cell when vesicle fuses with plasma membrane.
When RBC is placed in hypertonic solution, water flows out from cells by osmosis and cause cells to shrink. This phenomenon called as (a) .
Cells can be connected to each other through proteins. Which type of connection creates a waterproof seal?
Desmosomes
Gap junctions
Quilt junction
Tight junctions
Plasmodesmata in plant cells are analogous to what structure in animal cells?
Tight junctions
Gap junctions
Adhesion junctions
Vacuoles
Urine is confined to the human bladder in part due to the structure of junctions that connect the cells lining the bladder. These junctions form a barrier that prevents the exchange of ions and solutes between the blood and urine. What is the likely identity of these junctions?
Gap junctions
Tight junctions
Adhering junctions
Plasmodesmata
Which type of cellular junction is prominent in cardiac myocytes and allows for a unified contraction of the heart? Hint: in order for these cells to contract in unison, ions need to flow rapidly between them.
Tight
Adhering
Gap
Plasmodesmata
Which of these correctly matches the cellular junction with its function?
Gap junctions prevent the flow of ions and water from one part of the body to another
Adhering junctions are branched network of proteins that are impermeable to fluids
Gap junctions are connections that directly connect the cytoplasm of two cells
Tight junctions are random, spot attachments between cells that prevent tearing of tissue
The type of cell junction which facilitates cell to cell communication.
Adhering junction
Desmosomes
Tight junction
Gap junction
From interior to exterior the cell, how would a cell connect to the extracellular matrix?
cytoskeletal fiber, fibronectin, integrin, collagen
fibronectin, cytoskeletal fiber, collagen, integrin
cytoskeletal fiber, integrin, fibronectin, collagen
fibronectin, integrin, cytoskeletal fiber, collagen
A major function of glycoproteins and glycolipids in the membane is to
glue cells together to form tissues
allow cells to identify each other
attach membrane to cytoskeleton
help retain shape
Selectively interacts
with a specific
molecule or ion so
that it can cross the
plasma membrane.
channel protein
carrier protein
junction protein
receptor protein
Catalyzes chemical reactions
channel proteins
junction proteins
cell recognition proteins
enzymatic protein
If a growth hormone is present and sending a signal to the bone cells to grow but the cells aren't responding to the signal it could mean that the cells have a faulty
carrier protein
cell recognition protein
channel protein
receptor protein
What happens to cells in the body with foreign glycoproteins?
They are sent to the lysosomes to be digested.
They are eliminated as waste.
They are attacked by white blood cells as part of our immune system.
They are absorbed into the membrane as recycled.
Which type of membrane proteins are make up the Major Histocompatibility complex (MHC)?
Junction proteins
Cell recognition proteins
Enzymatic proteins
Receptor proteins
Molecules naturally move from an area of ____ concentration to an area of ____ concentration.
high; high
low; low
high; low
low; high
What is the Extracellular matrix protein that is a long cable that provides strength and is very abundant (about 25% of proteins in the body)
Fibronectin
Lamina
Proteoglycan
Collagen
What is the function of the extracellular matrix?
Coiled into a spiral
mechanical properties to tissues
provides strength, resilience, cusionining, and adhesion
provides elastin,gel-like
The solution surrounding the cell in Diagram B, would be defined as:
hypertonic
hypotonic
isotonic
The solution surrounding the cell in Diagram C, would be defined as
hypertonic
isotonic
hypotonic
This egg has shrunk, what type of solution was it placed in?
hypotonic solution
hypertonic solution
isotonic solution
In an isotonic solution which way will the water flow
it will not flow at all
it will flow into the cell
it will flow both ways at equal rates
out of the cell
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
What type of solution should you put fresh flowers in to keep them fresh the longest?
Hypertonic- It causes plasmolysis, which causes the flowers to turgid.
Hypotonic- It causes the cell membrane to push on the cell wall, causing the flowers to stay turgid.
Isotonic- It causes the flowers to become flaccid.
Neutral solution- It will not cause any change in the flowers
In plant cells, the force, exerted by the flow of water, within the cell that pushes the plasma membrane against the cell wall. This force gives plants structure and helps them stand up and not wilt.
External Stimuli
Internal Stimuli
Energy Transformation
Turgor Pressure
A general term for the various types of active transport that move particles into a cell by enclosing them in a vesicle made out of plasma membrane.
Endocytosis
Exocytosis
Osmosis
Diffusion
small compartment enclosed by a membrane formed during transport of material during endo + exocytosis
vesicles
large vacuole
mitochondria
lysosome
A ligand (signaling molecule) binds to a receptor protein. After signal transduction, the membrane undergoes invagination to create a “pit” that forms the vesicle.
Receptor-mediated endocytosis
Phagocytosis
Facilitated diffusion
Receptor-mediated exocytosis
Explain why plant cells don't burst when placed in a hypotonic solution but animal cells do.
Epithelial cells need to stick to each other and/or the basal lamina. Connective tissue needs to stick to things in the extracellular matrix. Which of these things would be in connective tissue? CHECK TWO
Belt Desmosomes
Integrin
Fibronectin
Hemidesmosomes
Spot Desmosomes
