Question 1

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

Accepted Answer

A)   Rudolf Virchow.
B)   Antony van Leeuwenhoek.
C)   Robert Hooke.
D)   Mathias Schleiden and Theodore Schwann.
E)   Louis Pasteur.F) B) and C)
G) A) and C)

Question 2

One reason viruses should not be considered living organisms is because they do not consist of one or more cells.

Accepted Answer

A) True 
 B)False

Question 3

How do sperm move to fertilize eggs?

Accepted Answer

A)   by diffusion
B)   with cilia made of microtubules
C)   with flagella made of actin
D)   with cilia made of actin
E)   with flagella made of microtubulesF) A) and B)
G) A) and C)

Question 4

Which scientist(s) is (are) given credit for making the first record of microorganisms from observations with his (their) microscope?

Accepted Answer

A)   Robert Hooke
B)   Mathias Schleiden and Theodore Schwann
C)   Antony van Leeuwenhoek
D)   Louis Pasteur
E)   Rudolf VirchowF) A) and B)
G) A) and C)

Question 5

A eukaryotic cell

Accepted Answer

A)   does not have membrane-bounded organelles.
B)   has a cell wall with peptidoglycan.
C)   is usually smaller than a prokaryotic cell.
D)   has membrane-bounded organelles.
E)   does not usually have a nucleus.F) D) and E)
G) A) and B)

Question 6

Eukaryotic cells are 10-100 times the size of prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

Accepted Answer

A)   None of the biochemical reactions in prokaryotes occur in eukaryotes.
B)   Gasses are taken up by active transport.
C)   They have pumps that move gasses and nutrients through the cell.
D)   Organelles keep reactions compartmentalized and concentrated.E) All of the above
F) A) and B)

Question 7

Which are recycling centers for the cell?

Accepted Answer

A)   All of the answer choices are correct.
B)   ribosome and Golgi apparatus
C)   mitochondria and nucleus
D)   central vacuole and lysosome
E)   endoplasmic reticulum and chloroplastF) A) and C)
G) A) and E)

Question 8

An understanding of cellular biology is helping us find new treatments for many diseases.

Accepted Answer

A) True 
 B)False  True

Question 9

What is the selective advantage of a mature red blood cell being flat rather than a sphere?

Accepted Answer

A)   It provides more membrane for the electron transport chains where oxygen is consumed.
B)   It maximizes the relative surface area available to exchange gasses.
C)   The cell's surface area to volume will decrease, making it easier for the cell to fit through arteries and veins.
D)   It provides more sites for the membrane-bound hemoglobin molecules which transport oxygen.
E)   It saves energy by making more membrane relative to the volume of the cell.F) C) and E)
G) D) and E)

Question 10

Mitochondria and chloroplasts are the only plastid organelles,because of their DNA and ribosomes.

Accepted Answer

A) True 
 B)False

Question 11

Penicillin halts bacterial infections

Accepted Answer

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

Question 12

The cells shown here are all part of the Eukarya domain.

Accepted Answer

A) True 
 B)False

Question 13

In order for a milk protein to be secreted in mammals,these events must happen in the correct organelle function sequence.

Accepted Answer

A)   DNA transcription in the nucleus-passage of mRNA to the Golgi apparatus; translation of mRNA by the ribosome-conversion of mRNA to proteins by the cytoskeleton
B)   production of proteins in the nucleus-passage of proteins through the endoplasmic reticulum; packaging of proteins in the Golgi apparatus; activation of the proteins by the mitochondrion
C)   attached to the smooth endoplasmic reticulum
D)   DNA transcription in the nucleus-attaching and moving mRNA with cytoskeleton; translation to build proteins in the smooth endoplasmic reticulum-secrete the milk proteins from the cell
E)   DNA transcription in the nucleus-passage of mRNA out of nucleus; translation of mRNA by the ribosome-packaging of proteins by the endoplasmic reticulumF) D) and E)
G) A) and C) E

Question 14

A wild duck needs a steady supply of energy to be able to fly for hours.Domesticated chickens rarely fly.As a result you would expect to find _____ in the breast muscles of wild ducks than domesticated chickens.

Accepted Answer

A)   fewer mitochondria
B)   more cytoplasm
C)   more mitochondria
D)   more Golgi
E)   less cytoplasmF) A) and B)
G) A) and C)

Question 15

The primary structural molecule composing a cell membrane is a(n)

Accepted Answer

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

Question 16

A phospholipid molecule has

Accepted Answer

A)   hydrophilic tails that are repelled by water.
B)   a hydrophobic head that is repelled by water.
C)   hydrophobic tails that are attracted to water.
D)   a hydrophilic head that is attracted to water.
E)   a hydrophilic head that is repelled by water.F) A) and C)
G) All of the above

Question 17

You are working on a forensics team and collect some cells from a crime scene.The cells are angular,rigid,and have a cell wall made up of cellulose.This sample most likely came from a(n)

Accepted Answer

A)   plant.
B)   All of the answer choices are correct.
C)   animal.
D)   fungus.
E)   All could be correct.F) A) and E)
G) A) and B)

Question 18

The original three tenets of the cell theory are

Accepted Answer

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

Question 19

Cells come in a range of sizes, and a variety of shapes. Assuming a cell type has a conservative cube shape, it may have limits to size, because of the need of materials to diffuse into or out of the cell through the surface area of the cell membrane. Calculate the numerical changes of a cube-shaped cell from an original size of 10 μm × 10 μm × 10 μm.
-If the cell was a cube and you doubled the height,width,and length of the cell,how much would the volume increase?

Accepted Answer

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

Question 20

Flagella move by way of dynein proteins that connect microtubules and force them to shift back and forth to bend or rotate the flagella.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function

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

Correct Answer
verified

One reason viruses should not be considered living organisms is because they do not consist of one or more cells.

Correct Answer
verified

How do sperm move to fertilize eggs?

Correct Answer
verified

Which scientist(s) is (are) given credit for making the first record of microorganisms from observations with his (their) microscope?

Correct Answer
verified

A eukaryotic cell

Correct Answer
verified

Eukaryotic cells are 10-100 times the size of prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

Correct Answer
verified

Which are recycling centers for the cell?

Correct Answer
verified

An understanding of cellular biology is helping us find new treatments for many diseases.

Correct Answer
verified
True

What is the selective advantage of a mature red blood cell being flat rather than a sphere?

Correct Answer
verified

Mitochondria and chloroplasts are the only plastid organelles,because of their DNA and ribosomes.

Correct Answer
verified

Penicillin halts bacterial infections

Correct Answer
verified

The cells shown here are all part of the Eukarya domain.

Correct Answer
verified

In order for a milk protein to be secreted in mammals,these events must happen in the correct organelle function sequence.

Correct Answer
verified
E

A wild duck needs a steady supply of energy to be able to fly for hours.Domesticated chickens rarely fly.As a result you would expect to find _____ in the breast muscles of wild ducks than domesticated chickens.

Correct Answer
verified

The primary structural molecule composing a cell membrane is a(n)

Correct Answer
verified
D

A phospholipid molecule has

Correct Answer
verified

You are working on a forensics team and collect some cells from a crime scene.The cells are angular,rigid,and have a cell wall made up of cellulose.This sample most likely came from a(n)

Correct Answer
verified

The original three tenets of the cell theory are

Correct Answer
verified

Correct Answer
verified

Flagella move by way of dynein proteins that connect microtubules and force them to shift back and forth to bend or rotate the flagella.

Correct Answer
verified

Exam 3: Cell Structure and Function

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

Correct AnswerverifiedShow Answer

One reason viruses should not be considered living organisms is because they do not consist of one or more cells.

Correct AnswerverifiedShow Answer

How do sperm move to fertilize eggs?

Correct AnswerverifiedShow Answer

Which scientist(s) is (are) given credit for making the first record of microorganisms from observations with his (their) microscope?

Correct AnswerverifiedShow Answer

A eukaryotic cell

Correct AnswerverifiedShow Answer

Eukaryotic cells are 10-100 times the size of prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

Correct AnswerverifiedShow Answer

Which are recycling centers for the cell?

Correct AnswerverifiedShow Answer

An understanding of cellular biology is helping us find new treatments for many diseases.

Correct AnswerverifiedTrue

What is the selective advantage of a mature red blood cell being flat rather than a sphere?

Correct AnswerverifiedShow Answer

Mitochondria and chloroplasts are the only plastid organelles,because of their DNA and ribosomes.

Correct AnswerverifiedShow Answer

Penicillin halts bacterial infections

Correct AnswerverifiedShow Answer

The cells shown here are all part of the Eukarya domain.

Correct AnswerverifiedShow Answer

In order for a milk protein to be secreted in mammals,these events must happen in the correct organelle function sequence.

Correct AnswerverifiedE

A wild duck needs a steady supply of energy to be able to fly for hours.Domesticated chickens rarely fly.As a result you would expect to find _____ in the breast muscles of wild ducks than domesticated chickens.

Correct AnswerverifiedShow Answer

The primary structural molecule composing a cell membrane is a(n)

Correct AnswerverifiedD

A phospholipid molecule has

Correct AnswerverifiedShow Answer

You are working on a forensics team and collect some cells from a crime scene.The cells are angular,rigid,and have a cell wall made up of cellulose.This sample most likely came from a(n)

Correct AnswerverifiedShow Answer

The original three tenets of the cell theory are

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Flagella move by way of dynein proteins that connect microtubules and force them to shift back and forth to bend or rotate the flagella.

Correct AnswerverifiedShow Answer

Correct Answer
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True

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E

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D

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