Font size
WorksheetsCell Review Test Practice
Total questions: 147
Worksheet time: 7hrs 21mins
active transport
What is an ion channel?
small particles in cells in which protein is made
the boss of a cell
a protein or proteins that move ions through the cell membrane
I have no idea...
What is cell theory?
a cell that converts chemical energy into food energy
the thought that all living things are made of cells
the theory about cells
How am I supposed to know?
What is the mitochondria?
eukaryotic cells
part of DNA
a cell that converts chemical energy into food energy
I have no idea what that is... :(
What are ribosomes?
small particles in cells where protein is made
another word for cells
structures that performs important cellular functions
Something in the ribs of living things...
What is a plant cell?
a cell that is in everything
a cell without a nucleus
a cell with no membrane
a eukaryotic cell that has a true membrane
What is an animal cell?
a nucleus
a eukaryotic cell with a membrane bound nucleus
an organelle
a cell in an animal
What is an organelle?
part of an organ
a cytoskeleton
something that makes protein in cells
a structure that performs important cellular functions
What is the nucleus?
the part of the cell that controls what goes in and out of the cell
the boss (brain) of the cell
a part of a cell that isn't that important
Umm... I have no idea...
What is the cell membrane?
the main part of plant cells
another word for cell DNA
the flexible barrier around a cell that regulates what goes in and out of the cell
the cell's boss
What is the cytoskeleton?
a human skeleton
part of a cell where particles are trapped
the system of protein filaments in some cells that help the cell keep its shape
I've never heard that word in my life!
What is a prokaryotic cell?
a microorganism that lacks a distinct membrane
the same thing as a eukaryotic cell
a cell that clearly shows the nucleus
the lipid molecules that form a cell membrane with hydrophobic ends inward and hydrophilic ends outward
What is the phospholipid bilayer?
the layer of the outside of the cell
Something I have never heard of before.
a structure that performs important cellular functions
the lipid molecules that form a cell membrane with hydrophobic ends inward and hydrophilic ends outward
What is a eukaryotic cell?
a cell that carries oats
a microorganism that lacks a distinct membrane
a cell that clearly shows the nucleus
a cell that doesn't have a nucleus
What is cellulose?
sawdust
a weird word for cell
the main part of plant cells
no clue...
What's an ion pump?
a pump that helps you live
a protein that moves ions across a plasma membrane
a material visible in the nucleus that carries DNA
I have no idea what that means...
What's the cytosol?
the thought that all living things are made of cells
a DNA pump
part of a cell where particles are trapped
What?
What is chromatin?
a material visible in the nucleus that carries DNA
the center of an atom that has protons and neutrons in it
a cell that converts chemical energy into food energy
a protein or proteins that move ions through the membrane
What is the role of ribosomes?
To store genetic information.
To produce glycolipids.
To synthesize proteins.
To hydrolyze waste materials.
Which of the following is not found in all forms of life, and therefore is not evidence of the common ancestry of life?
Nuclei
Ribosomes
Plasma Membranes
Cytosol
Which of the following is a difference between smooth and rough endoplasmic reticulum (ER)?
Smooth ER exists in a part of the cell near the cell membrane, while rough ER exists in a part of the cell near the nucleus.
Smooth ER is not studded by ribosomes, while rough ER is studded by ribosomes.
Smooth ER is meant to compartmentalize the cell, while rough ER detoxifies and synthesizes lipids.
Smooth ER is made without the additional help of proteins, whereas rough ER is made with the help of special proteins called reticuloproteins.
Which of the following is the "receiving" side of the Golgi apparatus?
cis
trans
gamma
iota
Which of the following is a function of the Golgi apparatus?
Detoxification of the cell and lipid synthesis.
Protein and rRNA synthesis.
Synthesis of chemical energy (adenosine triphosphate).
Chemical modification of newly synthesized proteins before they are packaged for trafficking to other parts of the cell or outside of the cell.
In plants, what is the primary function of vacuoles?
To maintain water pressure inside of the cell.
To remove waste from inside of the cell.
To store nutrients inside of the cell.
To synthesize new membranes for the cell.
Which of the following membrane-bound organelles is responsible for hydrolysis (using enzymes to break down macromolecules)?
Vacuoles
Chloroplasts
Lysosomes
Peroxisomes
Which of the following is a reason that cells are so small?
Cells are small because they want to maximize their surface area-to-volume ratio.
Cells are small because they want to maximize their volume-to-surface area ratio.
Cells are small because they need to produce extremely small macromolecules.
Cells are small because they prefer to work together in clusters of many thousands that wouldn't otherwise fit anywhere.
Which of the following is one way that cells increase their surface area without increasing their size?
Cells will often include perfectly spherical membranes.
Cells will often include folds in their membranes.
Cells will often include holes in their membranes.
Cells will maximize their volume.
Which is a not reason why cells want to increase their surface area without increasing their size?
An increased surface area is associated with a greater ability to transfer heat to maintain homeostasis.
An increased surface area is associated with a greater ability to exchange gases from inside the cell to the outside of the cell.
An increased surface area is associated with a greater ability to reproduce.
An increased surface area is associated with a greater ability to complete chemical reactions.
What happens to cells as they increase in volume?
Their radius decreases.
Their surface area increases.
Their surface area decreases.
Their circumference decreases.
Which of the following correctly describes hydrophobic and hydrophilic regions of the cellular membrane?
The hydrophobic region is made of phosphates, and the hydrophilic region is made of lipids.
The hydrophobic region is 'water-loving', and the hydrophilic region is 'water-fearing'.
The hydrophobic region is polar, and the hydrophilic region is non-polar.
The hydrophobic region faces inward in the interior of the membrane, the hydrophilic region faces outwards towards the aqueous environment.
Which of the following is the correct name of the model that describes the structure of the cell membrane?
The Fluid Molecular Model
The Free Molecular Model
The Fluid Mosaic Model
The Free Mosaic Model
Which of the following would need assistance moving through the plasma membrane?
Nitrogen gas (N2)
Oxygen gas (O2)
Carbon Dioxide gas (CO2)
Water
Which of the following is a difference between passive and active transport?
Passive transport moves molecules against their gradient, while active transport moves molecules with their gradient.
Passive transport moves molecules with a direct input of energy, while active transport moves molecules without a direct input of energy.
Passive transport moves molecules non-spontaneously, while active transport moves molecules spontaneously.
Passive transport moves molecules without a direct input of energy, while active transport moves molecules with a direct input of energy.
What is the primary role of aquaporins?
To transport water across the membrane.
To change the state of water from gas to liquid.
To pump water into the mitochondria for cellular respiration.
To use water for hydrolytic purposes.
Which of the following describes a solution that has a higher concentration than the internal environment of the cell?
Hypotonic
Isotonic
Hypertonic
Transtonic
If a cell is placed in a hypotonic solution, what is likely to happen to it over time?
The cell will swell, as water flows into the cell.
The cell will not change, as it will be at dynamic equilibrium.
The cell will lyse, as water bursts the cell.
The cell will shrink, as water flows out of the cell.
Which of the following describes the endosymbiotic theory?
A prokaryotic cell engulfed several other types of smaller prokaryotic cells, and eventually its compartmentalization made the cell eukaryotic.
A eukaryotic cell engulfed several other types of smaller prokaryotic cells, and eventually its compartmentalization made the cell prokaryotic.
A prokaryotic cell engulfed several other types of smaller eukaryotic cells, and eventually its compartmentalization made the cell eukaryotic.
A eukaryotic cell engulfed several other types of smaller eukaryotic cells, and eventually its compartmentalization made the cell prokaryotic.
Which of the following membrane-bound organelles evolved from free-living prokaryotic cells?
Nuclei and plasmids.
Mitochondria and chloroplasts.
Vacuoles and lysosomes.
Centrioles and microtubules.
Active transport is different from passive transport in that active transport involves:
the movement of molecules from high concentration to low concentration
an expenditure of energy
the use of ribosomes
a process which occurs only in the cells of simple plants and animals
The method of transport that allows molecules to move into and out of the cell without energy from areas of high concentration to areas of low concentration is called...
passive transport
osmosis
active transport
pump
The movement of WATER across the cell membrane or any semi-permeable membrane through the use of aquaporins is described as _______.
osmosis
active transport
diffusion
neuron relay
When two solutions have the same solute concentration we would say that they are...
isotonic
hypertonic
hypotonic
solute
When comparing two solutions side by side, we call the solution that contains a lower solute concentration _______.
hypotonic
hypertonic
isotonic
solute
In ________________, a substance is being moved from areas of low concentration to high concentration.
active transport
passive transport
osmosis
diffusion
Moving from an area of high concentration to an area of low concentration would be considered what type(s) of transport?
Diffusion
Passive Transport
Active Trasport
Mosaic Transport
In all forms of passive transport,the molecules move down the concentration gradient from areas of ____________________ concentration.
They don't move
High to low
Low to High
Isotonic to Hypertonic
The ___ is the fundamental unit of life that specializes and joins others like it to form tissues in an organism, providing it with structure and giving it function
atom
cell
matter
all other answers are correct
If we were comparing a glass of pure water and a glass of salt water, we would say the glass of saltwater is the _____________ solution
hypotonic
hypertonic
isotonic
solvent
If a blood cell is placed in salt water, it will...
loose water and shrink
gain water and shrink
loose water and swell
gain water and swell
sodium potassium pump moves Na and K against the concentration gradient and uses energy; what is this?
active transport
passive transport
diffusion
osmosis
The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels made of?
Proteins
Lipids
Carbohydrates
Bilipids
What type of transport requires the assistance of special transport proteins to help some molecules, like glucose, into the cell without the use of energy?
Facilitated Diffusion
Osmosis
Active Transport
Diffusion
The sodium potassium pump is an example of what type of transport?
Diffusion
Facilitated Diffusion
Active Transport
Passive Transport
Endocytosis and Exocytosis are both classified as what type of transport?
Active Transport
Passive Transport
Energy
Neutral Transport
Process that regulates internal chemical processes to maintain equilibrium, requiring constant adjustments as internal and external conditions change
Movement of ions or molecules across a membrane down a concentration gradient ; it does not require the input of energy (example: osmosis)
Movement of ions or molecules across a membrane, often against a concentration gradient; requires energy input; (example: endocytosis)
Dispersion (spreading out) of substances in a gas or liquid (example: perfume in a room)
Diffusion of water through a semi-permeable membrane from an area of high water concentration to an area of low water concentration
A solution that has a higher osmotic pressure than another solution; it has a concentration of solutes greater than the concentration of solutes in the cells. Water leaves the cell.
A solution that has a lower osmotic pressure than another solution. Water will enter the cell. Cells will rapidly fill up, become turgid, and may burst.
Solution with the same osmotic pressure an another solution. Water moves in both directions across the semipermeable membrane without altering the concentration of solutes on either side.
Chemicals that are unable to cross the membrane directly are able to diffuse across the membrane through transport proteins. These proteins facilitate (or “help”) the process of diffusion.
A process in which cells take in materials by wrapping a section of plasma membrane around those materials and bringing them into the cell
(example: White blood cells do this to harmful cells)
Process used by the cell to expel waste matter and to secrete substances, such as hormones.
a substance that has the ability to be dissolved by a solvent to create a solution (example: the sugar in sugar water)
Which one does NOT mean "same" or "equal"?
homeo-
semi-
equi-
iso-
Prefix that means "in to"
endo-
exo-
iso-
equi-
Prefix that means "out of"
endo-
exo-
iso-
facil-
The prefix "facil-", as in "facilitate" means what?
to help
same
above
extra
According to the fluid mosaic model of cell membranes, phospholipids___________________.
can shift laterally along the plane of the membranee
frequently flip-flop from one side of the membrane to the other
occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane
have hydrophilic tails in the interior of the membrane
Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?
transmembrane proteins
integral membrane proteins
peripheral proteins
cholesterol
In what way do the membranes of a eukaryotic cell vary?
Phospholipids are found only in certain membranes
Certain proteins are unique to each membrane
Only certain membranes of the cell are selectively permeable
Some membranes have hydrophobic surfaces exposed to the cytoplasm while others have hydrophilic surfaces facing the cytoplasm.
Which of the following statements describes a characteristic feature of a carrier protein in a plasma membrane?
It exhibits specificity for a particular type of molecule
It requires the expenditure of cellular energy to function.
It works against diffusion.
It has not hydrophobic regions.
Which of the following would likely diffuse through the lipid bilayer of a plasma membrane most rapidly?
sucrose.
an amino acid.
O2.
Na+.
Which of the following statements about diffusion is true?
It is very rapid of long distances.
It requires an expenditure of energy by the cell.
It is an active process in which molecules move from a region of lower concentration to a region of higher concentration.
It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.
Which of the following processes is an "umbrella" term for the others?
Osmosis.
Facilitated diffusion.
Passive transport.
Transport of an ion down its electrochemical gradient.
Which cell is in a hypertonic environment?
A
B
C
None of them are hypertonic
Assuming that the purple molecules are too large to pass through the membrane, what would happen to the water level as a result of osmosis?
The water level would rise on the A side
The water level would rise on the B side
The water level would remain constant
The water level would drop on the A side.
White blood cells engulf bacteria using _______________.
phagocytosis
pinocytosis
osmosis
receptor-mediated exocytosis
Which of the following factors would tend to increase membrane fluidity?
a greater proportion of unsaturated phospholipids
a greater proportion of saturated phospholipids
a lower temperature
a relatively high protein content in the membrane
Which of the following membrane activities requires energy from ATP?
Facilitated diffusion of chloride ions through a chloride channel.
Movement of Na+ ions from lower concentration in a mammalian cell to a higher concentration in the extracellular fluid.
Movement of glucose molecules into a bacteria cell from a medium containing a higher concentration of glucose than inside the cell.
Movement of carbon dioxide out of a paramecium.
An animal cell lacking in carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?
transporting ions against an electrochemical gradient
cell-cell recognition
attaching the plasma membrane to the cytoskeleton
establishing a diffusion barrier to charged molecules
