Questão 1
Questão
Diffusion is the movement of molecules from
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an area of low concentration to an area of high concentration
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an area of high concentration to an area of low concentration
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an isotonic solution to a hypotonic solution
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an area of equilibrium to an area of high concentration
Questão 2
Questão
When a plant cell is placed in a saltwater solution, the cell is affected and changes size. What part of the cell will be UNAFFECTED?
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the cytoplasm
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the vacuole
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the cell membrane
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the cell wall
Questão 3
Questão
Which method of transport moves substances in or out of the cell that REQUIRES ENERGY?
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osmosis
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diffusion
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facilitated diffusion
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active transport
Questão 4
Questão
The diffusion of WATER across a selectively permeable membrane is called
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facilitated diffusion
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osmosis
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equilibrium
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active transport
Questão 5
Questão
The only DIFFERENCE between diffusion and facilitated diffusion is
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facilitated diffusion requires energy
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diffusion requires energy
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facilitated diffusion uses protein channels to move substances in or out of the cell
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facilitated diffusion is the moves substances from an area of low concentration to an area of high concentration
Questão 6
Questão
After eating a salty snack like potato chips, the cells in your mouth become saturated with salt. What happens to the cells in your mouth as they react to the ELEVATED salt environment?
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salt moves out of the cell causing them to shrink
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water moves into the cell causing them to burst
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water moves out of the cell causing them to shrink
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salt moves into the cell causing them to burst
Questão 7
Questão
A solution in which the salt concentration is LOWER than the salt concentration inside the cell is called
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an isotonic solution
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a hypotonic solution
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a hypertonic solution
Questão 8
Questão
Which of the following is a function of the cell membrane?
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stores water, salt, proteins, and carbohydrates
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keeps the cell wall in place
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regulates which materials enter and leave the cell
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breaks down lipids, carbohydrates, and proteins from foods
Questão 9
Questão
A plant cell is placed in a HYPERTONIC solution, what will most likely happen to the cell?
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salt moves out of the cell causing it to shrink
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salt moves into the cell causing it to burst
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water moves into the cell causing it to burst.
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water moves out of the cell causing it to shrink.
Questão 10
Questão
When a cell needs to get rid of waste products and push them OUT OF THE CELL, which term best describe the process by which cells release substances from the cell?
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exocytosis
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pinocytosis
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endocytosis
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phagocytosis
Questão 11
Questão
When the concentration of molecules on both sides of a membrane is the SAME, the solution
Questão 12
Questão
A solution in which the salt concentration is HIGHER outside the cell than the salt concentration inside the cell is called
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an isotonic solution.
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a hypertonic solution.
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a hypotonic solution.
Questão 13
Questão
If a large cell consumes or EATS another smaller cell, say a tiny bacterium, which term best describe the process by which cells eat or consume?
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phagocytosis
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exocytosis
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endocytosis
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pinocytosis
Questão 14
Questão
The STRUCTURE of the cell membrane is best described as
Questão 15
Questão
Cells occasionally need to take in or drink large amounts of water, which term best describe the process by which cells DRINK or take in packets of water?
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endocytosis
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pinocytosis
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phagocytosis
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exocytosis
Questão 16
Questão
In the given scenario what will happen to the organism: Salt is poured onto a slug.
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water will move into the slug cells and the cells will swell
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water will move out of the slug cells and the cells will swell
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water will move out of the slug cells and the cells will shrink
Questão 17
Questão
In the given scenario what will happen? An egg is placed in pure water for 48 hours.
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the egg will lose water and shrink
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the egg will gain water and swell
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water will move in and out of the cell equally, and the cell with neither shrink nor swell
Questão 18
Questão
Movement of molecules against a concentration gradient.
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simple diffusion
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active transport
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facilitated diffusion
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osmosis
Questão 19
Questão
What is the definition of selective permeability?
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the movement of molecules from an area of high concentration to an area of low concentration
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the ability of the cell membrane to allow some things to pass through while preventing other things from passing through
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the movement of materials across the cell membrane that requires no energy from the cell
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the movement of materials through the cell membrane
Questão 20
Questão
A cell membrane is a thin layer of lipids and
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carbohydrates
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proteins
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cholesterol
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chitin
Questão 21
Questão
There will be no net movement of the water when a cell is placed in which solution?
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isotonic
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hypotonic
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hypertonic
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salt water
Questão 22
Questão
The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by
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facilitated diffusion
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simple diffusion
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active transport
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osmosis
Questão 23
Questão
Phospholipid tails are
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hydrophilic, nonpolar
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hydrophobic, nonpolar
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hydrophobic, polar
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hydrophilic, polar
Questão 24
Questão
When looking at the cell membrane, where are the lipid tails located?
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Inner part of the bilayer
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At the end of the bilayer
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Outer part of the bilayer
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Goes through each end of the bilayer
Questão 25
Questão
Which of the following is responsible for getting complex (large) molecules across the cell membrane?
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lipids
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proteins
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carbs
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nucleic acids
Questão 26
Questão
A cell will _____________________ in a hypertonic solution.
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swell
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shrink
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will explode
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will not change
Questão 27
Questão
A cell will __________________ in a hypotonic solution.
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swell and perhaps burst (lyse)
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shrink
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the size of the cell will not change
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the size of the cell will change from large to small and from small to large
Questão 28
Questão
The movement of water across a selectively permeable membrane without the use of any energy is called
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endocytosis
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active transport
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diffusion
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osmosis
Questão 29
Questão
A person should never drink salty water because their cells would
Questão 30
Questão
A person would never have pure water put into their veins in a hospital because their cells would...
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shrink/dehydrate
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expand/lyse
Questão 31
Questão
Keeps the fatty acid tails inside the nucleus from sticking together. It allows the cell membrane to be flexible.
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lipids
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cholesterol
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proteins
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carbohydrate chains
Questão 32
Questão
These are found on the extracellular side of the cell membrane. They deal with cell recognition.
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carbohydrate chains
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proteins
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lipids
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cholesterol
Questão 33
Questão
Label the following parts of the cell membrane.
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Phospholipid
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Phosphate Head
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Fatty Acid Tails
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Cholesterol
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Peripheral Protein
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Integral Protein
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Carbohydrate Chain
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Glycoprotein
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Glycolipid
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Lipid Bilayer