Question 1

Cells typically keep their surface to volume ratio low.If a cell was a cube and you doubled the height,width,and length of the cell,how much would the surface area increase?

Accepted Answer

A)  2-fold
B)  4-fold
C)  It would stay the same.
D)  9-fold
E)  8-fold

Question 2

The scientist (scientists) given credit for formulating the "cell theory" is (are)

Accepted Answer

A)  Robert Hooke.
B)  Carl Woese.
C)  J.Craig Venter.
D)  Mathias Schleiden and Theodore Schwann.
E)  Antony van Leeuwenhoek.

Question 3

A junction that is a protein channel linking the cytoplasm of adjacent cells is called

Accepted Answer

A)  a tight junction.
B)  a gap junction.
C)  an adhering junction.
D)  an anchoring junction.
E)  a microtubular junction.

Question 4

The original three tenets of the cell theory are that

Accepted Answer

A)  all organisms have DNA,DNA is the fundamental unit of life,and all cells come from preexisting cells.
B)  all organisms are made of one or more cells,the cell is the fundamental unit of life,and all cells come from preexisting cells.
C)  all organisms have DNA,all organisms are made of cells,and all cells produce proteins.
D)  all organisms are made of one or more cells,the cell is the fundamental unit of life,and all cells have a nucleus.
E)  all organisms are made of one or more cells,all cells contain DNA,and all cells come from preexisting cells.

Question 5

The primary structural component of a cell membrane is

Accepted Answer

A)  a cholesterol molecule.
B)  a protein molecule.
C)  a phospholipid molecule.
D)  an enzyme.
E)  a sugar molecule attached to a protein.

Question 6

Penicillin halts bacterial infections

Accepted Answer

A)  by stimulating a person's immune system.
B)  by damaging the cell membrane.
C)  by interfering with the construction of the cell wall.
D)  by causing the DNA of a bacterium to mutate.
E)  All answers are correct.

Question 7

Which pair of junctions,have the most analogous function?

Accepted Answer

A)  plasmodesmata,gap junction
B)  plasmodesmata,tight junction
C)  tight junction,anchoring junction
D)  gap junction,anchoring junction
E)  anchoring junction,plasmodesmatum

Question 8

Mitochondria are known for all of the following except that they do not

Accepted Answer

A)  have their own DNA.
B)  extract energy from food.
C)  have two membranes.
D)  have cristae.
E)  carry out photosynthesis.

Question 9

Which are recycling centers for the cell?

Accepted Answer

A)  ribosomes and Golgi apparatus.
B)  endoplasmic reticulum and chloroplasts.
C)  mitochondria and nucleus.
D)  central vacuole and lysosomes.
E)  All answers are correct.

Question 10

Which of the following do plants use to transport nutrients between adjacent cells?

Accepted Answer

A)  tight junction
B)  gap junction
C)  plasmodesmata
D)  anchoring junction
E)  cell wall

Question 11

The cytoskeleton consists of microtubules,microfilaments,and intermediate filaments.

Accepted Answer

A) True 
 B)False

Question 12

Unlike microtubules,which operate in the cilia and flagella,what is the role of microfilaments in eukaryotic cells?

Accepted Answer

A)  component of the cytoskeleton
B)  provide strength during cell stretching and compression
C)  anchor cells to each other
D)  involved in muscle contractions with myosin protein
E)  All answers are correct.

Question 13

If you found a piece of coating from outside a eukaryotic plasma membrane,and chemical tests showed that it was made of cellulose,you would expect to see plasmodesmata if you examined the piece in an electron microscope.

Accepted Answer

A) True 
 B)False

Question 14

If you were given a culture of bacteria that possessed internal membranes,you would predict that they could orient towards what?

Accepted Answer

A)  magnetic fields
B)  gravity
C)  sunlight
D)  moving water
E)  turbulence

Question 15

Which component of the cell theory argues against life on Earth evolving from inorganic molecules?

Accepted Answer

A)  All organisms are made of one or more cells.
B)  The cell is the fundamental unit of all life.
C)  All cells come from preexisting cells.
D)  Cells are small in size.
E)  All cells are either prokaryotic or eukaryotic.

Question 16

A phospholipid molecule

Accepted Answer

A)  has a hydrophilic head that is repelled by water.
B)  has hydrophilic tails that are repelled by water.
C)  has a hydrophilic head that is attracted to water.
D)  has a hydrophobic head that is repelled by water.
E)  has hydrophobic tails that are attracted to water.

Question 17

If you found a piece of animal tissue that did not allow fluid to leak across it,you would predict that it contained tight junctions.

Accepted Answer

A) True 
 B)False

Question 18

The most prominent organelle in most eukaryotic cells is the

Accepted Answer

A)  endoplasmic reticulum.
B)  nucleus.
C)  ribosome.
D)  nucleolus.
E)  cell membranE.

Exam 3: Cells

A junction that is a protein channel linking the cytoplasm of adjacent cells is called

Correct Answer
verified

If you were given a culture of bacteria that possessed internal membranes,you would predict that they could orient towards what?

Correct Answer
verified

Which are recycling centers for the cell?

Correct Answer
verified

If you found a piece of animal tissue that did not allow fluid to leak across it,you would predict that it contained tight junctions.

Correct Answer
verified

The primary structural component of a cell membrane is

Correct Answer
verified

Which of the following do plants use to transport nutrients between adjacent cells?

Correct Answer
verified

Which component of the cell theory argues against life on Earth evolving from inorganic molecules?

Correct Answer
verified

Cells typically keep their surface to volume ratio low.If a cell was a cube and you doubled the height,width,and length of the cell,how much would the surface area increase?

Correct Answer
verified

If you found a piece of coating from outside a eukaryotic plasma membrane,and chemical tests showed that it was made of cellulose,you would expect to see plasmodesmata if you examined the piece in an electron microscope.

Correct Answer
verified

Mitochondria are known for all of the following except that they do not

Correct Answer
verified

The cytoskeleton consists of microtubules,microfilaments,and intermediate filaments.

Correct Answer
verified

Penicillin halts bacterial infections

Correct Answer
verified

A phospholipid molecule

Correct Answer
verified

Which pair of junctions,have the most analogous function?

Correct Answer
verified

The scientist (scientists) given credit for formulating the "cell theory" is (are)

Correct Answer
verified

The most prominent organelle in most eukaryotic cells is the

Correct Answer
verified

Unlike microtubules,which operate in the cilia and flagella,what is the role of microfilaments in eukaryotic cells?

Correct Answer
verified

The original three tenets of the cell theory are that

Correct Answer
verified

Exam 3: Cells

A junction that is a protein channel linking the cytoplasm of adjacent cells is called

Correct AnswerverifiedShow Answer

If you were given a culture of bacteria that possessed internal membranes,you would predict that they could orient towards what?

Correct AnswerverifiedShow Answer

Which are recycling centers for the cell?

Correct AnswerverifiedShow Answer

If you found a piece of animal tissue that did not allow fluid to leak across it,you would predict that it contained tight junctions.

Correct AnswerverifiedShow Answer

The primary structural component of a cell membrane is

Correct AnswerverifiedShow Answer

Which of the following do plants use to transport nutrients between adjacent cells?

Correct AnswerverifiedShow Answer

Which component of the cell theory argues against life on Earth evolving from inorganic molecules?

Correct AnswerverifiedShow Answer

Cells typically keep their surface to volume ratio low.If a cell was a cube and you doubled the height,width,and length of the cell,how much would the surface area increase?

Correct AnswerverifiedShow Answer

If you found a piece of coating from outside a eukaryotic plasma membrane,and chemical tests showed that it was made of cellulose,you would expect to see plasmodesmata if you examined the piece in an electron microscope.

Correct AnswerverifiedShow Answer

Mitochondria are known for all of the following except that they do not

Correct AnswerverifiedShow Answer

The cytoskeleton consists of microtubules,microfilaments,and intermediate filaments.

Correct AnswerverifiedShow Answer

Penicillin halts bacterial infections

Correct AnswerverifiedShow Answer

A phospholipid molecule

Correct AnswerverifiedShow Answer

Which pair of junctions,have the most analogous function?

Correct AnswerverifiedShow Answer

The scientist (scientists) given credit for formulating the "cell theory" is (are)

Correct AnswerverifiedShow Answer

The most prominent organelle in most eukaryotic cells is the

Correct AnswerverifiedShow Answer

Unlike microtubules,which operate in the cilia and flagella,what is the role of microfilaments in eukaryotic cells?

Correct AnswerverifiedShow Answer

The original three tenets of the cell theory are that

Correct AnswerverifiedShow Answer

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