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AP Bio-Unit 2 Review

Total questions: 60

Worksheet time: 52mins

Name
Class
Date
1.

One of the key innovations in the evolution of eukaryotes from a prokaryotic ancestor is the endomembrane system. What eukaryotic organelles or features might have evolved as a part of, or as an elaboration of, the endomembrane system?

a)

ribosomes

b)

chloroplasts

c)

mitochondria

d)

nuclear membrane

2.
In a bacterial cell, one of the subunits of the ribosome is called 30s and is composed of about 20 different proteins. A mutation occurs that changes the structure of one of these proteins.  What effect will this most likely have on the bacterial cell?
a)
It would stimulate binary cell fission and the cell would divide uncontrollably.
b)
The cell would be unable to properly synthesize proteins.
c)
Development of abnormal hereditary features would occur in the cell.
d)
Increased protein absorption would occur through the cell membrane
3.
Which of the following statements regarding the mitochondria is correct?
a)
Mitochondria contain their own ribosomes and thus produce some of their own proteins.
b)
Mitochondria are involved in the transport that occurs as a part of the endomembrane system.
c)
Mitochondria rely on the DNA of the eukaryote cell in order to function correctly.
d)
Mitochondria produce ATP only used by themselves.
4.

A cross section of part of a Golgi complex is shown. Part of the membrane of the Golgi complex pinches off and moves away. Which of the following is a function of this process?

a)

to release energy from ATP

b)

to deliver proteins to other locations in the cell

c)

to collect amino acids for use in protein synthesis

d)

to sent messages about cell requirements to the nucleus

5.
Which of the following statements correctly matches a cell part with its function
a)
The cell membrane packages lipids for export
b)
The mitochondria perform photosynthesis
c)
The lysosome digests molecules
d)
The nucleus produces energy
6.

Trichondia is a eukaryotic organism that attaches itself to fish and eats bacteria. Which of the following distinguishes Trichodina from all prokaryotes?

a)

Trichodina is unicellular

b)

Trichodina has a nucleus

c)

Trichodina has cytoplasm

d)

Trichodina is heterotrophic

7.

Keratin is a protein found in hair. Where in a cell is keratin made?

a)

nucleus

b)

vacuole

c)

ribosomes

d)

mitochondria

8.

Which of the following statements is consistent with the structure of the cell shown?

a)

It is an epithelial cell

b)

It is a mature red blood cell

c)

It requires high levels of oxygen

d)

It converts carbon dioxide into glucose

9.
After a protein is constructed at the ribosome, it can be transported to the Golgi complex for modification. What cellular structure is used in this transport?
a)
Lysosome
b)
Mitochondrion
c)
Nuclear pore
d)
Endoplasmic reticulum
10.

Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large and complex lipids. Which cellular organelle must be involved in this condition?

a)

the endoplasmic reticulum

b)

the Golgi apparatus

c)

the lysosome

d)

membrane-bound ribosomes

11.

Liver cells are specialized cells that carry out a multitude of tasks, including the synthesis of cholesterol and the breakdown of protein metabolites. These cells would be expected to contain a large proportion of which organelle relative to all others?

a)

smooth ER

b)

rough ER

c)

golgi

d)

nucleolus

12.
Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly?
a)
CO2
b)
Glucose
c)
An Amino Acid
d)
Starch
13.
Which of the following is a characteristic feature of a carrier protein in a plasma membrane?
a)
It is a peripheral membrane protein.
b)
It requires the expenditure of cellular energy to function.
c)
It works against diffusion.
d)
It exhibits a specificity for a particular type of molecule.
14.
When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur?
a)
The cell will burst.
b)
The cell membrane will lyse.
c)
The cell will become turgid.
d)
The cell will become flaccid.
15.
An organism with a cell wall would most likely be unable to take in materials through
a)
diffusion.
b)
facilitated diffusion.
c)
phagocytosis.
d)
active transport.
16.
The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.5 M sodium chloride (NaCl), and side B is filled with a solution containing 0.8 M glucose and 0.4 M sodium chloride. Initially, the volume in both arms is the same. At the beginning of the experiment, 
a)
side A is hypertonic to side
b)
side A is hypotonic to side B.
c)
side A is hypertonic to side B with respect to glucose.
d)
side A is isotonic to side B.
17.
The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.5 M sodium chloride (NaCl), and side B is filled with a solution containing 0.8 M glucose and 0.4 M sodium chloride. Initially, the volume in both arms is the same. If you examine side A after three days, you should find
a)
a decrease in the concentration of NaCl and glucose and an increase in the water level.
b)
no net change in the system.
c)
a decrease in the concentration of NaCl and a decrease in the water level.
d)
a decrease in the concentration of NaCl, an increase in water level, and no change in the concentration of glucose.
18.

Five dialysis bags, constructed from a semipermeable membrane that is impermeable to sucrose, were filled with various concentrations of sucrose and then placed in separate beakers containing an initial concentration of 0.6 M sucrose solution. At 10-minute intervals, the bags were massed (weighed) and the percent change in mass of each bag was graphed.Which line in the graph represents the bag with the highest initial concentration of sucrose?

a)

A

b)

B

c)

D

d)

E

19.
Which of the following factors would tend to increase membrane fluidity?
a)
a greater proportion of relatively large glycolipids compared with lipids having smaller molecular masses
b)
a lower temperature
c)
a relatively high protein content in the membrane
d)
a greater proportion of unsaturated phospholipids
20.
Which of the following processes includes all others?
a)
diffusion of a solute across a membrane
b)
osmosis
c)
passive transport
d)
facilitated diffusion
21.

Diffusion with the help of transport proteins is called

a)

phagocytosis

b)

Na-K Pump

c)

Facilitated Diffusion

d)

Active Transport

22.

Enables cell to engulf bulk quantities of specific large molecules is called

a)

pinocytosis

b)

phagocytosis

c)

receptor-mediated endocytosis

d)

exocytosis

23.

Movement of molecules "up" or "against" the concentration gradient (meaning low to high) is called

a)

passive transport

b)

active transport

c)

diffusion

d)

facilitated diffusion

24.

Movement of any particle "down" or "with" the concentration gradient is called

a)

diffusion

b)

endocytosis

c)

exocytosis

d)

active transport

25.

Type of transport that requires ATP is called

a)

passive transport

b)

active transport

26.

Fusion of membrane-bound vesicle with membrane and dumping contents outside cell is known as

a)

endocytosis

b)

diffusion

c)

osmosis

d)

exocytosis

27.

How does oxygen and carbon dioxide enter and leave the cells?

a)

osmosis

b)

facilitated diffusion

c)

active transport

d)

diffusion

28.

Diffusion of water across a semi-permeable membrane is known as

a)

diffusion

b)

osmosis

c)

active transport

d)

endocytosis

29.

What happens to a cell when exposed to a hypertonic solution?

a)

shrivels

b)

swells

c)

stays the same

30.

What happens to a cell in an isotonic solution?

a)

shrivels

b)

swells

c)

stays the same

31.

What happens to a single-celled organism placed in a drop of pure water?

a)

shrivels

b)

swells

c)

stays the same

32.

Plant cells are happy when they are turgid, which solution would maintain a plant's turgidity?

a)

hypotonic solution

b)

hypertonic solution

c)

isotonic solution

33.

Which type of solution would cause a plant cell to be flaccid, not plasmolyze, but flaccid?

a)

hypotonic

b)

hypertonic

c)

isotonic

34.

When given an IV of fluid, why are humans given a salt solution of 0.7M?

a)

It is hypertonic to your own cells

b)

It is hypotonic to your own cells

c)

It is isotonic to your own cells

35.

Animal cells prefer ____ solutions and plant cells prefer _______ solutions for homeostasis.

a)

hypertonic, hypotonic

b)

hypotonic, hypertonic

c)

isotonic, hypotonic

d)

isotonic, hypertonic

36.

When organisms maintain a stable internal environment it is known as

a)

homeostasis

b)

differentiation

c)

maintenance

d)

transformation

37.

The main component of cell membranes are

a)

proteins

b)

phospholipids

c)

cholesterol

d)

carbohydrate tags

38.
What do the brown structures represent?
a)
Phospholipids
b)
Glycoproteins
c)
Channel Proteins 
d)
Cyctoskeleton Filaments
39.
What is the name for a molecule that has a polar head region and a hydrophobic tail region?
a)
Bihydrophicity
b)
Amphipathic
c)
Hydrophilic
d)
Dipolarity
40.
What extracellular molecules aid in cell recognition and cell to cell binding?
a)
Glycoproteins
b)
Glycolipids
c)
Proteoglycans
d)
All of the above
41.
Which of the following factors does NOT determine the speed of diffusion? 
a)
Temperature
b)
Diameter
c)
pH
d)
Concentration Gradients 
42.
This organelle stores water and other materials.  It is larger in plat cells.
a)
vacuole
b)
cell wall
c)
chloroplast
d)
cytoplasm
43.
In the membrane section seen, which section would represent the non-polar section of a protein?
a)
A
b)
B
c)
C
d)
D
44.

Cell theory states that...

a)

cells are the basic building block of life

b)

cells are cool

c)

cells are microscopic

d)

cells cannot be destroyed

45.

Cell theory also states that...

a)

bacteria are eukaryotic cells

b)

animals are prokaryotic cells

c)

cells come from other cells (cell division or splitting apart)

d)

cells are awesome!

46.

Lastly cell theory states....

a)

cells don't do much

b)

cells are microscopic

c)

all living things are made up of cells (either unicellular or multicellular)

d)

bacteria aren't cells

47.
The theory of Endosymbiosis explains
a)
The origin of eukaryotes
b)
How species develop
c)
How bacteria live
d)
Why cells rely on one another
48.
According to endosymbiosis, what did the ancient host cell receive from its the cell living inside of it?
a)
Shelter
b)
Motility
c)
Energy
d)
Reproduction
49.

All of the following are evidence of endosymbiosis EXCEPT

a)

mitochondria and chloroplast ribosomes are similar to bacterial ribosomes

b)

mitochondria and chloroplast are similar in size to bacteria

c)

mitochondria and chloroplast have double membranes

d)

mitochondria and chloroplast have a nucleus

50.
Which of the following cells would have the highest surface area to volume ratio?
a)
1
b)
2
c)
3
d)
they are all the same
51.

If a cells  Ψp\Psi p = 3 bars and its  Ψs\Psi s = -4.5 bars, what is the resulting  Ψ\Psi  ?

a)

-7.5

b)

7.5

c)

-1.5

d)

1.5

52.

The cell from question 1 is placed in a beaker of sugar water with Ψs\Psi s  = -4.0 bars.  In which direction will the net flow of water be?

a)

Out of the cell

b)

Into the cell

c)

Both into and out of the cell

d)

Neither into nor out of the cell

53.

The original cell from question 1 is pllaced in a beaker of sugar water with  Ψs\Psi s  = -0.15 MPa (megapascals).  We know that 1 MPa = 10 bars.  In which direction will the net flow of water be?

a)

Into the cell

b)

Out of the cell

c)

No net flow of water

54.

NaCl dissociates into 2 particles in water: Na+ and Cl-. If the solution in question 4 contained 0.1M NaCl instead of 0.1M sucrose, what is the  Ψ\Psi  of the solution, and in which direction would the net flow of water be?

a)

-3.3 bars, net flow out of the root (into the solution)

b)

3.3 bars, net flow into the root

c)

-4.87 bars, net flow out of the root (into the solution)

d)

4.87 bars, net flow into the root

55.

A plant cell with a Ψs\Psi s  of -7.5 bars keeps a constant volume when immersed in an open-beaker solution that has a  Ψs\Psi s  of -4 bars.  What is the cells  Ψp\Psi p  ?

a)

-4

b)

-7.5

c)

-3.5

d)

3.5

56.

At 20 °\degree C, a cell containing 0.6M glucose is in equilibrium with its surrounding solution containing 0.5M glucose in an open container.  What is the cell's  Ψp\Psi p  ? 

a)

2.4

b)

0.1

c)

-12.2

d)

-14.6

57.

At 20 °\degree C, a cell with  Ψp\Psi p  of 3 bars is in equilibrium with the surrounding 0.4M solution of sucrose in an open beaker.  What is the molar concentration of sucrose in the cell?

a)

0.4

b)

-9.7

c)

-12.7

d)

0.5

58.

What is the Ψs\Psi s   of a 1.0M sugar solution at 22 °\degree C under standard atmospheric conditions?

a)

-24.5 bars

b)

24.5 bars

c)

-2.45

d)

2.45

59.

At 22 °\degree C, zucchini cores are measured and determined to have a sucrose concentration of 0.36M. What is the Ψs\Psi s   of these cells and in which direction will the net flow of water be?

a)

0.64 net flow of water out of the cell

b)

-0.36 net flow of water into the cell

c)

8.17 net flow of water out of the cell

d)

-8.83 net flow of water into the cell

60.

Water potential is the sum of opposing forces of

a)

Osmotic pressure and diffusion pressure deficit

b)

Solute potential and osmotic potential

c)

Solute potential and pressure potential

d)

Diffusion pressure deficit and turgor pressure