Name: 
 

EOC Practice: Cells



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

People should not drink sea water.  How does drinking sea water affect the cells in the body?
a.
Water flows into cells and the cells expand.
c.
The cell membrane prevents water flow and pumps ions in.
b.
Water flows out of the cells and the cells shrink.
d.
the cell membrane allows water to flow and pumps ions out.
 

 2. 

A cell must be able to take in food and remove waste products from the surrounding environment. 
mc002-1.jpg
Which organelle regulates the movement of materials in and out of the cell?
a.
1
c.
3
b.
2
d.
4
 

 3. 

Through cellular respiration, cells convert chemical energy to a usable form for cellular functions.  Which organelle performs cellular respiration?
a.
chloroplast
c.
mitochondria
b.
Golgi apparatus
d.
nucleus
 

 4. 

Which organelle  modifies proteins before they are either used by the cell or transported out of the cell?
a.
endoplasmic reticulum
c.
mitochondria
b.
Golgi complex
d.
ribosome
 

 5. 

A plants rate of oxygen release decreases steadily after the course of several hours. A decreasing rate of activity in which organelle could directly explain this activity?
a.
vacuole
c.
chloroplast
b.
ribosome
d.
mitochondria
 

 6. 

Character of four organisms are shown in the table below.
mc006-1.jpg
Which organism is characterized as a prokaryote?
a.
1
c.
3
b.
2
d.
4
 

 7. 

Which of these characteristics best describes the difference between eukaryotic and prokaryotic cells?
a.
Eukaryotic DNA has deoxyribose, and prokaryotic DNA has ribose.
c.
Eukaryotic cells reproduce asexually, and prokaryotic cells reproduce sexually.
b.
Eukaryotic DNA is free floating in the cell, and prokaryotic DNA is in a nucleus.
d.
Eukaryotic cells are usually larger and more complex than prokaryotic cells.
 

 8. 

Which of these molecules is a nucleic acid?
mc008-1.jpg
mc008-2.jpg
a.
A
c.
C
b.
B
d.
D
 

 9. 

The  table below shows the results on four unknown substances from compositional tests for biological macromolecules.
mc009-1.jpg
Which unknown substance is most likely primarily composed of protein?
a.
Unknown 1
c.
Unknown 3
b.
Unknown 2
d.
Unknown 4
 

 10. 

When a student adds Sudan red to a solution, the solution turns reddish orange.  The student can conclude that the solution has a high concentration of which biomolecules?
a.
carbohydrates
c.
proteins
b.
lipids
d.
nucleic acids
 

 11. 

The enzyme amylase begins reacting with starch during the chewing of food.  When the food enters the stomach, amylase is no longer active and starch decomposition stops.  When the food leaves the stomach and enters the small intestine, starch decomposition continues.  Why is amylase inactive in the stomach?
a.
The pH of the stomach is not optimum for amylase.
c.
The temperature of the stomach is too low for amylase to function.
b.
The concentration of sugar is great and inactivates amylase.
d.
The amylase has been degraded by the reaction with the starch molecules.
 

 12. 

Enzymes are catalysts.  How do enzymes increase the reaction rate?
a.
transfer inhibitors away from reactants
c.
transfer substrates to ribosomes
b.
provide a site for substrates to react
d.
provide energy to reactants
 

 13. 

Which process in the cell cycle is responsible for the nucleus of each new cell having the same number of kinds of chromosomes as the original cell?
a.
mitosis
c.
interphase
b.
meiosis
d.
cytokinesis
 

 14. 

The cell cycle is shown in the diagram.
mc014-1.jpg
In which stage of the cell cycle does the amount of DNA double?
a.
G1 Phase
c.
M Phase
b.
G2 Phase
d.
S Phase
 

 15. 

A number of different drugs are available for use when studying the cell cycle and mitosis.  One of these, vincristine, interferes with the formation of microtubules.  If microtubules are unable to form, which is the best explanation for how vincristine affects mitosis?
a.
The cells would be unable to replicate the DNA to allow for cell division.
c.
The spindle fibers could not form to move the chromosomes to opposite poles during mitosis.
b.
The cells would be unable to undergo cytokinesis following the completion of mitosis.
d.
The chromosomes would not align at the center of the cell to allow for movement during mitosis.
 

 16. 

A representation of a cell membrane is shown in the diagram below.
mc016-1.jpg
How does the channel protein aid in the movement of particles through the cell membrane?
a.
It helps ions to bond and form larger compounds inside the cell.
c.
It enables ions to be removed from the cell against the concentration gradient.
b.
It causes ions inside the cell to attract water molecules from outside the cell.
d.
It allows ionic compounds to move freely through the membrane to reach equilibrium.
 

 17. 

A cell is placed in a solution with salt concentration much higher than the cell cytoplasm.  What will most likely happen to the cell?
a.
The cell will burst.
c.
The cell will shrink.
b.
The cell will swell.
d.
The cell will remain unchanged.
 

 18. 

A diagram of a cell is shown below.
mc018-1.jpg
Which organelle stores the information that codes for protein structure?
a.
1
c.
3
b.
2
d.
4
 

 19. 

In which organelle does photosynthesis take place?
a.
ribosome
c.
chloroplast
b.
mitochondrion
d.
central vacuole
 

 20. 

During exercise, muscle cell consume large amounts of energy.  Which organelles increase their activity in muscle cells during exercise to make more energy available?
a.
nuclei
c.
mitochondria
b.
ribosomes
d.
Golgi complexes
 

 21. 

The graph below illustrates changes in dissolved oxygen at a monitoring station in Chesapeake Bay.
mc021-1.jpg
The graph shows evidence of change in the activity of which organelle in algae in Chesapeake Bay?
a.
chloroplast
c.
mitochondrion
b.
Golgi complex
d.
ribosome
 

 22. 

A typical plant cell is shown.
mc022-1.jpg
Which organelle is responsible for cellular respiration?
a.
organelle 1
c.
organelle 3
b.
organelle 2
d.
organelle 4
 

 23. 

Which diagram shows a eukaryotic cell?
mc023-1.jpg
a.
image A
c.
image C
b.
image B
d.
image D
 

 24. 

The diagram below shows a macromolecule.
mc024-1.jpg
What is one of the functions of this macromolecule?
a.
energy storage
c.
regulating cellular functions
b.
structural support
d.
controlling immune responses
 

 25. 

The diagram below show the structure of glucose and fructose molecules.
mc025-1.jpg
What structure makes glucose and fructose carbohydrates rather than lipids?
a.
These molecules contain fewer oxygen atoms than hydrogen atoms.
c.
These molecules contain double-bonded oxygen atoms.
b.
These molecules contain no double-bonded carbon atoms.
d.
These molecules contain no carboxylic acid groups.
 

 26. 

Which macromolecule has a structure made up of an amino acid chain?
a.
carbohydrate
c.
protein
b.
nucleic acid
d.
lipid
 

 27. 

A student tests for the presence of biomolecules in four unknown liquids. The results of the tests are in the table.
mc027-1.jpg
What is the most reasonable conclusion why unknown 4 displayed all negative results?
a.
This unknown contained lipids
c.
This unknown contained distilled water
b.
This unknown contained proteins
d.
This unknown contained simple carbohydrates
 

 28. 

There are reagents that identify the presence of specific organic compounds.  Which result indicates the presence of starch?
a.
Iodine turns black.
c.
Biuret reagent turns purple.
b.
Iodine turns brick red.
d.
Biuret reagent turns yellow.
 

 29. 

Enzymes are proteins.  What is the function of enzymes?
a.
reduce the activation energy needed for reactions
c.
provide structural support to cells
b.
serve as building blocks for amino acids
d.
cause all reactions to occur
 

 30. 

Which statement best describes the outcome of mitosis?
a.
Mitosis prevents genetic variation by precisely duplicating parent cell genetic material and passing it on unchanged to daughter cells.
c.
Mitosis suppresses genetic variation by segregating new gene forms from established gene forms and failing to pass on new gene forms to daughter cells.
b.
Mitosis reduces the number of genes by half every time it occurs, forcing offspring to copy remaining genes and reducing diversity.
d.
Mitosis exchanges genetic diversity for dependability by using extensive error-checking to reduce inheritance of both mutations and genetic variations.
 

 31. 


The cell cycle is shown in the diagram below.
mc031-1.jpg
Which phase indicates the part of the cell cycle in which the cell is preparing for mitosis?
a.
G1 Phase
c.
G2 Phase
b.
S Phase
d.
M Phase
 

 32. 

The cell cycle is the sequence of growth and division that cells go through.  When does the cell cycle begin for each individual cell?
a.
at the completion of DNA replication
c.
at the beginning of mitosis
b.
at the completion of cytokinesis
d.
at the end of interphase
 

 33. 

The diagram shows dissolved sodium chloride (KCl) particles separated by a semi-permeable membrane.

mc033-1.jpg
After diffusion is complete, how will the contents of Side A and Side B compare?
a.
Side A will contain most of the K+ and Cl- particles
c.
Sides A and B will contain approximately equal amounts  of the K+ and Cl- particles
b.
Side B will contain most of the K+ and Cl- particles
d.
Side A will contain mostly  K+  particles, and Side B will contain mostly  Cl- particles.
 

 34. 

A piece of potato is placed in a beaker of distilled water.  How will this environment affect the movement of water in the cells of the potato?
a.
Water will leave the cells by exocytosis.
c.
Water will move into the cells through the cell membrane.
b.
Water will be removed from cell vacuoles.
d.
Water will move out of the cells through the cell membrane.
 

 35. 

Materials move through the cell membranes by active and passive transport.  Which diagram illustrates active transport?
mc035-1.jpg
a.
Image A
c.
Image C
b.
Image B
d.
Image D
 



 
Check Your Work     Start Over