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B1 - Week 3 - Homework

Total questions: 37

Worksheet time: 26mins

Name
Class
Date
1.
During osmosis
a)
water moves from high to low concentration
b)
large or oddly shaped molecules move across a cell membrane
c)
water moves when energy is used
d)
proteins are built
2.
Ideally, your cells should be in a(n) _______ solution
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
d)
Cola
3.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
4.
_______ regulates what enters and leaves a cell.  
a)
Cell Membrane
b)
Nucleus
c)
Mitochondria
d)
Cytoplasm
5.
Osmosis
a)
diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
b)
the diffusion of particles from an area of high concentration to an area of low concentration
c)
diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
d)
the diffusion of particles from an area of low concentration to an area of high concentration
6.
The cell below is in a _________ solution.
a)
Hypotonic
b)
Hypertonic
c)
Isotonic
7.
Which cell is placed into a hypotonic environment? 
a)
A
b)
B
c)
C
d)
D
8.
Which way will the water molecules move during osmosis?
a)
Out of the cell, so the cell shrinks.
b)
Out of the cell, so the cell swells.
c)
Into the cell, so the cell shrinks.
d)
Into the cell, so the cell swells.
9.
What is diffusion?
a)
when molecules move 
b)
when molecules move from a high concentration to a low.
c)
no movement 
d)
molecules move everywhere
10.
 An animal cell placed in a hypertonic (salty) solution will
a)
Stay the same
b)
Shrink- get smaller
c)
Swell- get bigger
11.
What is the definition of  Selective Permeability?
a)
The movement of materials across the cell membrane that requires NO ENERGY from the cell.
b)
The movement of materials through (or across) the cell membrane
c)
The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.
d)
The movement of molecules from an area of high concentration to a area of low concentration 
12.
What is the diffusion of water only across a cell or semi-permeable membrane?
a)
Osmosis
b)
Diffusion
c)
Active Transport
d)
Passive Transport
13.
What type of cellular transport uses energy?
a)
Passive Transport
b)
Active Transport
14.
In which case would a cell most likely shrink?
a)
when placed in a solution containing a high salt concentration
b)
when placed in a isotonic solution
c)
when placed in a solution containing a low pH
d)
when placed in a solution containing distilled water
15.
Active transport requires energy because...
a)
The cell is moving something against a concentration gradient
b)
The cell is moving something with a concentration gradient
16.
A student noticed that placing wilted lettuce in a bowl of cool water caused the lettuce to become more crisp and firm. What is the best explanation for his observation?
a)
Water moved into the lettuce cells by active transport.
b)
Water moved into the lettuce cells by osmosis.
c)
Salt moved into the lettuce cells by diffusion.
d)
Water moved out of the lettuce cells by osmosis.
17.
Diffusion and Osmosis are examples of...
a)
Active Transport
b)
Passive Transport
18.

Active transport is the movement of large materials across a cell membrane from ______ to ______ concentration

a)

high to low

b)

low to high

c)

high to high

d)

low to low

19.

Active transport across a cell membrane from low to high concentration, requires

a)

energy (ATP)

b)

no energy

c)

water

d)

oxygen

20.

A type membrane protein that can pump one substance in one direction, while transporting another substance in the opposite direction.

a)

pump transport

b)

bulk transport

c)

diffusion

d)

osmosis

21.

An example of pump transport is

a)

glucose transport

b)

osmosis

c)

Na+/K+ Pump

d)

CO2 + O2 Transport

22.

Large particles (or large quantities of smaller particles) are moved across the cell membrane with the use of energy.

a)

pump transport

b)

osmosis

c)

bulk transport

d)

CO2 + O2 Transport

23.

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.

a)

Endocytosis

b)

Exocytosis

c)

Osmosis

d)

Diffusion

24.

A form of bulk transport in which materials are transported from the inside to the outside of the cell in membrane-bound vesicles that fuse with the plasma membrane.

a)

Endocytosis

b)

Exocytosis

c)

Osmosis

d)

Diffusion

25.

white blood cells engulfing invading bacteria is an example of

a)

Endocytosis

b)

Exocytosis

c)

Diffusion

d)

Facilitated Diffusion

26.

nerve cells release neurotransmitters across gaps

and secretion of proteins and wastes

a)

Exocytosis

b)

Endocytosis

c)

Diffusion

d)

Facilitated Diffusion

27.

small compartment enclosed by a membrane formed during transport of material during endo + exocytosis

a)

vesicles

b)

large vacuole

c)

mitochondria

d)

lysosome

28.

Stem cells are

a)

undifferentiated or unspecialized cells in the body.

b)

differentiated or specialized cells in the body.

c)

only found in the inner mass cells of blastocyst

d)

only found in a fetus

29.

_________ refers to a stem cell's ability to differentiate into other cell types

a)

potency

b)

potential

c)

dormancy

d)

aptitude

30.

a cell that has the most potential, able to become any type of cell.

a)

Totipotent

b)

Pluripotent

c)

Multipotent

31.

can become any of the three cell layers in a

developing embryo (endoderm, mesoderm, ectoderm), but not the placenta surrounding the embryo.

a)

Totipotent

b)

Pluripotent

c)

Multipotent

32.

partially differentiated, with only the capacity to become one cell type.

a)

Totipotent

b)

Pluripotent

c)

Multipotent

33.

Which has the highest potency?

a)

Morula

b)

Blastocyst

c)

Fetus

d)

Adult

34.

Which has the lowest potency?

a)

Morula

b)

Blastocyst

c)

Fetus

d)

Adult

35.

Which cell type would divide the most rapidly?

a)

Skin

b)

Muscle

c)

Nerve

36.

Which cell type would divide the least rapidly?

a)

Skin

b)

Red Blood cells

c)

Nerve

37.

As cells become more specialized

a)

cells have access to more genes

b)

some genes are turned off

c)

some gene segments get lost

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