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Review Cellular transport and plasma membrane

Total questions: 81

Worksheet time: 2hrs 9mins

Name
Class
Date
1.

The diffusion of water is called

a)

Active transport

b)

Facillitated diffusion

c)

Osmosis

d)

Exocytosis

2.

Amoeba, a single celled protist, has a specialized structure called a contractile vacuole whose function is to collect excess water from the cell and discharge this water into the environment. From this information you can deduce that Amoeba lives in an environment that is ​ (a)   to the cytoplasm of Amoeba. Thus, you would expect to find Amoeba living in: ​ (b)  

Choose from the below words
hypotonic
freshwater pond
hypertonic
isotonic
ocean
a bottle of unpasteurized milk
. a bottle of unpasteurized milk
3.

Carrot sticks that are left in a dish of freshwater for several hours become stiff and hard. Similar sticks left in a salt solution become limp and soft. From this we can deduce that the cells of the carrot sticks are ​ (a)  

Choose from the below words
Hypotonic to both freshwater and the salt solution
Hypertonic to both freshwater and the salt solutio
Hypertonic to freshwater but hypotonic to the salt
Hypotonic to freshwater but hypertonic to the salt
Isotonic with freshwater but hypotonic to the salt
4.

A paramecium is a freshwater (close to pure water), unicellular organism that has special organelles called contractile vacuoles, which remove excess water (they use active transport to pump water out of the cell). The plasma membrane of a paramecium is permeable to water, but not to salt.

Water enters the paramecium because of

a)

osmosis

b)

phagocytosis

c)

plasmolysis

d)

active transport

5.

A paramecium is a freshwater (close to pure water), unicellular organism that has special organelles called contractile vacuoles, which remove excess water (they use active transport to pump water out of the cell). The plasma membrane of a paramecium is permeable to water, but not to salt. actile vacuole failed to operate, the paramecium would eventually ​ (a)  

Choose from the below words
burst
shrink
not change
use active transport
6.

Which of the following is a type of passive transport?

a)

Diffusion

b)

Osmosis

c)

Facilitated diffusion

d)

Active transport

7.

What type of transport does not require energy but does require a protein to move molecules down the concentration gradient?

a)

Simple Diffusion

b)

Osmosis

c)

Facilitated Diffusion

d)

Active transport

8.

When a solution has more solute than the cell, the cell will

a)

shrink

b)

swell

c)

stay the same size

d)

lyse

9.

What term is used for a solution that has less solute than the cell?

a)

Hypotonic

b)

Hypertonic

c)

Isotonic

d)

Turgid

10.

When the solute concentration inside and outside of the cell is the same, the term used for the solution is

a)

Hypotonic

b)

Hypertomic

c)

Isotonic

d)

Osmotic

11.

Bulk transport where vesicles export material outside the cell

a)

Exocytosis

b)

Endocytosis

c)

Passive transport

d)

Diffusion

12.

When substances move against their concentration gradient, they are moving from

a)

high to low concentration

b)

low to high concentration

c)

inside to outside in equal concentration

13.

What are the main subunits that makes up this structure called?

a)

proteins

b)

carbohydrates

c)

phospholipids

d)

glycoproteins

14.

What is #2?

a)

phospholipid

b)

cholesterol

c)

nonpolar tails

d)

protein

15.
Movement of particles through the cell membrane from high to low concentrations
a)
diffusion
b)
photosynthesis
c)
mitochondria
d)
active transport
16.
Against the concentration gradient
low to high uses energy/ATP
a)
facilitated diffusion
b)
osmosis
c)
active transport
d)
diffusion
17.

What term means a state of stability or equilibrium?

a)

Taxis

b)

Cell Transport

c)

Diffusion

d)

Homeostasis

18.

Which cell structure is responsible for maintaining homeostasis by allowing materials in and out of the cell?

a)

Nucleus

b)

Ribosomes

c)

Cell Membrane

d)

Cell Wall

19.

What are the 2 types of cell transport?

a)

Active

b)

Passive

c)

Osmosis

d)

Diffusion

20.

Passive transport moves materials along the concentration gradient from:

a)

High to low concentration

b)

Low to high concentration

21.

Osmosis is specifically the diffusion of:

a)

Water

b)

Gas

c)

Solids

d)

Any particles

22.

Beaker B demonstrates a ______________ solution.

a)

Hypertonic

b)

Hypotonic

c)

Isotonic

23.

Beaker A represents a ______________ solution.

a)

Hypertonic

b)

Hypotonic

c)

Isotonic

24.

In beaker C, water will _______ the cell.

a)

Enter

b)

Exit

c)

Both exit and enter

25.

Active transport requires the most direct use of:

a)

ATP

b)

Proteins

c)

Water

d)

Glucose

26.

In active transport, materials are moved from:

a)

High to low concentration

b)

Low to high concentration

27.

Why is maintaining homeostasis important?

a)

The survival of the cell, and therefore the organism, depends on it.

b)

To ensure the cell can make enough energy

c)

To prevent nutrients from entering the cell

d)

The cell cannot withstand stable environments.

28.
The cell below is in a _____________ solution.
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
29.
This egg has shrunk, what type of solution was it placed in?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
30.
You put a cell into a solution, the cell grows. Is the solution hypotonic or hypertonic to the cell? 
a)
hypertonic
b)
hypotonic
c)
isotonic
d)
not enough information
31.
What type of solution allows water to enter the plant cell?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
32.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
33.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
34.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
35.

Select all that are true for the beaker on the right.

a)

The RBC was placed in a hypertonic solution

b)

The RBC was placed in a hypotonic solution

c)

Water will leave the cell

d)

Water will enter the cell

36.

Which of the following are true of isotonic situations? Select all that apply!

a)

Water does not move

b)

Water moves in and out of the cell

c)

There is no net movement of water

d)

Solute moves in and out of the cell

e)

Solute does not move

37.

Facilitated diffusion requires _______.

a)

A protein

b)

Energy

c)

Energy and a protein

d)

An electrochemical gradient

38.

Osmosis is an example of ____________, and uses ____________ proteins.

a)

Simple diffusion ; no

b)

Facilitated diffusion ; aquaporin

c)

Facilitated diffusion ; pump

d)

Active transport ; aquaporin

39.

Which of the following molecules can pass through the membrane via simple diffusion?

a)

Oxygen

b)

Water

c)

Glucose

d)

Hydrogen ions

40.

Membranes are built on ___ bilayers.

a)

phospholipid

b)

triglyceride

c)

steroid

d)

cellulose

41.

The exterior of the membrane is ___

a)

hydrophobic

b)

hydrophilic

42.

The interior of the membrane is ___

a)

hydrophobic

b)

hydrophilic

43.

A protein that has been covalently modified with a carbohydrate is a ____

a)

glycolipid

b)

glycoprotein

c)

carbo-protein

d)

carbo-lipid

44.

At lower temperatures, membranes are ___ fluid.

a)

more

b)

less

45.

At higher temperatures, membranes are ___ fluid.

a)

more

b)

less

46.
The molecule responsible for increasing the fluidity of the membrane are:
a)
Glycolipids
b)
Glycoproteins
c)
Cholesterols
d)
Aquaporins
47.
The molecule responsible for allowing water to flow across the membrane is:
a)
Glycolipids
b)
Glycoproteins
c)
Aquaporins
d)
Cholesterol
48.
Active Transport typically uses ______ to transport materials across the cell membrane.
a)
ATP
b)
Glucose
c)
Na+
d)
K+
49.
Molecules that need to come through channels into the cell are typically...
a)
Polar
b)
Hydrophobic
c)
Non-Polar
d)
Di-Atomic
50.
Molecules that come through into the cell by simple diffusion are typically...
a)
Polar
b)
Hydrophilic
c)
Non-Polar
d)
Carbohydrates
51.
A macrophage engulfing and digesting a bacterial cell is an example of:
a)
Exocytosis
b)
Endocytosis
c)
Co-Transport
d)
Osmosis
52.

Where can PROTEINS be found when part of a plasma membrane?

a)

On the outside of the membrane

b)

On the inside of the membrane

c)

Embedded part of the way into the membrane

d)

Embedded the whole way through the membrane

e)

All of the above

53.

What is the function of cholesterol in a plasma membrane?

a)

To make the membrane flexible

b)

To control the effect of temperature changes

c)

To attract water molecules

d)

To allow nutrients and other essential molecules into the cell

54.

What is the "big idea" of the fluid mosaic model of plasma membranes?

a)

the plasma membrane creates a specialized FLUID that looks like a MOSAIC.

b)

the plasma membrane is a MOSAIC.

c)

the fluid mosaic model is NOT related to the plasma membrane.

d)

a plasma membrane is a MOSAIC of components that move FREELY and FLUIDLY.

55.

What does "hydrophobic" mean?

a)

water loving, associates with water

b)

water fearing, does not associate with water

c)

a world war II submarine

d)

an example would be solutes like sugar or salt

56.

What does "hydrophilic" mean?

a)

water loving, associates with water

b)

water fearing, does not associate with water

c)

a world war II submarine

d)

an example would be solutes like oil or fat

57.
The cell membrane is selectively permeable, which means...
a)
All materials can enter and leave the cell
b)
Certain things can enter while others cannot
c)
The cell manually sorts through all materials
d)
Only certain cells can interact with the cell.
58.
diffusion is the movement of 
a)
water from low to high concentration
b)
particles from low to high concentration
c)
water from high to low concentration
d)
particles from high to lowconcentration
59.
Which is true about active transport?
a)
It requires energy
b)
it does not require energy
c)
It moves substances down the concentration gradient
d)
it moves material from high to low concentration
60.
Which is NOT a form of active transport?
a)
Endocytosis
b)
Osmosis
c)
Exocytosis
d)
Pinocytosis
61.
The movement of molecules against a concentration gradient
a)
simple diffusion
b)
facilitated diffusion
c)
active transport
62.
In the image, the cell would:
a)
lose water and shrink
b)
lose water and swell
c)
gain water and shrink
d)
gain water and swell
63.
In the image, the cell would:
a)
gain water and shrink
b)
gain water and swell
c)
lose water and shrink
d)
lose water and swell
64.

Identify cholesterol molecule

a)

structure a

b)

structure b

c)

structure h

d)

structure i

65.

Identify a peripheral protein

a)

structure a

b)

strucure b

c)

structure g

d)

structure h

66.

A major function of glycoproteins and glycolipids in the membane is to

a)

glue cells together to form tissues

b)

allow cells to identify each other

c)

attach membrane to cytoskeleton

d)

help retain shape

67.

When doctors perform organ transplants, they choose a donor tissue match. Which component is being matched?

a)

membrane phospholipids

b)

cytoskeleton

c)

cell surface carbohydrates/sugar chains

d)

cholesterol

68.

What kinds of molecules pass through a cell membrane most easily?

a)

ionic

b)

small and hydrophobic

c)

large polar

d)

large and hydrophobic

69.

identify a glycolipid

a)

structure a

b)

structure d

c)

structure e

d)

structure g

70.

Which of the following would likely move through the lipid bilayer most rapidly?

a)

potassium

b)

an amino acid

c)

Carbon dioxide

d)

glucose

71.

Transport of large molecules into the cell

a)

Pinocytosis

b)

Exocytosis

c)

Phyllocytosis

d)

Phagocytosis

72.

Active transport is different to passive transport because....

a)

it doesnt require ATP.

b)

molecules move agaisnt a concentration gradient.

c)

it only uses channel proteins.

d)

molecules move towards a concentration gradient.

73.

Amount of solute dissolved in solvent

a)
Molarity
b)
Concentration
c)
Density
d)
Volume
74.

The output of a system intensifies the response, more of the same.

a)
Damping
b)

Negative feedback loop

c)
Amplification
d)

Positive feedback loop

75.

The output of a system causes a counter (opposite) reponse to a set point, leading to stabilization.

a)
neutral feedback
b)

passive feedback loop

c)

negative feedback loop

d)

positive feedback loop

76.
When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.
a)
Positive Feedback Response
b)
Negative Feedback Loop 
77.
When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 
a)
Positive Feedback Response
b)
Negative Feedback Loop 
78.
Maintaining body temperature is an example of a:
a)
negative feedback loop
b)
positive feedback loop
79.
The process of childbirth is an example of:
a)
negative feedback loop
b)
positive feedback loop
80.
The two types of feedback systems that help organisms maintain homeostasis are:
a)
positive and negative 
b)
receptor and effector
c)
static and dynamic
d)
minor and major
81.
Failure to maintain homeostasis could result in:
a)
lack of internal balance
b)
eventual death
c)
difficulty carrying on metabolism 
d)
all three

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