Question 1

Eukaryotic cells

Accepted Answer

A)   have cell walls with peptidoglycan.
B)   are usually smaller than prokaryotic cells.
C)   have nucleiods.
D)   have membrane-bound organelles.
E)   do not usually have a nucleus.F) C) and D)
G) B) and C)

Question 2

Cells typically keep the surface to volume ratio high.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 times greater
B)   4 times greater
C)   It would stay the same.
D)   9 times greater
E)   8 times greaterF) B) and E)
G) A) and D)

Question 3

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, plasmodesmataF) C) and D)
G) B) and D)

Question 4

You are working on a forensics team and collect cells from a crime scene.The cells have a cell wall made of cellulose.This sample most likely came from

Accepted Answer

A)   an animal.
B)   a bacterium.
C)   a plant.
D)   a fungus.
E)   an archaean.F) A) and D)
G) A) and C)

Question 5

You discover a new life form,and study it under an electron microscope.You find that it has no organelles,a peptidoglycan cell wall,and fatty acids in its plasma membrane.You conclude that the new life form is in domain

Accepted Answer

A)   Bacteria.
B)   Archaea.
C)   Eukarya.
D)   Protista.
E)   Animalia.F) B) and D)
G) All of the above

Question 6

Endosymbiosis is a theory based on the resemblance of chloroplasts and mitochondria to bacteria.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following are cellular digestion centers?

Accepted Answer

A)   peroxisomes and ribosomes
B)   lysosomes and peroxisomes
C)   ribosomes and chloroplasts
D)   chloroplasts and ribosomes
E)   lysosomes and Golgi apparatusF) C) and D)
G) A) and E)

Question 8

The scientist(s) given credit for formulating the "cell theory" was (were)

Accepted Answer

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

Question 9

Penicillin halts bacterial infections by

Accepted Answer

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

Question 10

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

Accepted Answer

A)   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 of the answers choices are correct.F) B) and E)
G) A) and D)

Question 11

In plant cells,a central vacuole

Accepted Answer

A)   produces protein.
B)   degrades molecules and organelles and maintains water pressure.
C)   produces mRNA.
D)   stores genetic information.
E)   produces energy from food.F) C) and E)
G) A) and B)

Question 12

What do a pine tree,an octopus,and a bacterium have in common at the cellular level?

Accepted Answer

A)   nothing in common
B)   nuclei
C)   blood supply
D)   cancerous tissues
E)   genetic materialF) B) and C)
G) All of the above

Question 13

In order,the organelles involved in the production of milk are

Accepted Answer

A)   nucleus, nuclear pore, rough ER, smooth ER, transport vesicle, Golgi body, and vesicle for secretion.
B)   nucleus, smooth ER, rough ER, nuclear pore, transport vesicle, Golgi body, and vesicle for secretion.
C)   nucleus, transport vesicle, rough ER, smooth ER, Golgi body, and vesicle for secretion.
D)   nucleus, nuclear pore, Golgi body, rough ER, transport vesicle, smooth ER, and vesicle for secretion.
E)   None of the answers are correct.F) A) and E)
G) All of the above

Question 14

Magnetism-detecting bacteria turn with an applied magnetic field.

Accepted Answer

A) True 
 B)False

Question 15

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.F) D) and E)
G) A) and B)

Question 16

Endosymbiosis is a theory based on the presence of structures like chloroplasts and ribosomes,which resemble cells from prokaryotic domains,in eukaryotic cells.

Accepted Answer

A) True 
 B)False

Question 17

If you asked students to describe the Golgi apparatus on an exam,you would deduct points if a student described it as

Accepted Answer

A)   an organelle.
B)   a processing center.
C)   studded with ribosomes.
D)   a stack of membrane enclosed sacs.
E)   involved with secretion of cellular components.F) C) and D)
G) D) and E)

Question 18

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.F) A) and B)
G) None of the above

Question 19

The most prominent organelle in most eukaryotic cells,that contains most of its DNA,is the

Accepted Answer

A)   endoplasmic reticulum.
B)   nucleus.
C)   ribosome.
D)   nucleolus.
E)   cell membrane.F) B) and C)
G) A) and E)

Question 20

What is the advantage of a mature red blood cell having a flattened shape rather than a spherical shape?

Accepted Answer

A)   It is easier for them to fit through arteries and veins.
B)   It provides more membrane for the electron transport chains where oxygen is consumed.
C)   It provides more receptor sites for the membrane-bound hemoglobin molecules which transport oxygen.
D)   It saves energy by making more membrane relative to the volume of the cell.
E)   It maximizes the relative surface area for gas exchange.F) B) and C)
G) All of the above

Exam 3: Cells

The most prominent organelle in most eukaryotic cells,that contains most of its DNA,is the

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If you asked students to describe the Golgi apparatus on an exam,you would deduct points if a student described it as

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

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Penicillin halts bacterial infections by

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Eukaryotic cells

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In order,the organelles involved in the production of milk are

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You discover a new life form,and study it under an electron microscope.You find that it has no organelles,a peptidoglycan cell wall,and fatty acids in its plasma membrane.You conclude that the new life form is in domain

Correct AnswerverifiedShow Answer

Cells typically keep the surface to volume ratio high.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

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

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Which pair of junctions,have the most analogous function?

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Which of the following are cellular digestion centers?

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What is the advantage of a mature red blood cell having a flattened shape rather than a spherical shape?

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Magnetism-detecting bacteria turn with an applied magnetic field.

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In plant cells,a central vacuole

Correct AnswerverifiedShow Answer

You are working on a forensics team and collect cells from a crime scene.The cells have a cell wall made of cellulose.This sample most likely came from

Correct AnswerverifiedShow Answer

The scientist(s) given credit for formulating the "cell theory" was (were)

Correct AnswerverifiedShow Answer

A phospholipid molecule

Correct AnswerverifiedShow Answer

What do a pine tree,an octopus,and a bacterium have in common at the cellular level?

Correct AnswerverifiedShow Answer

Endosymbiosis is a theory based on the presence of structures like chloroplasts and ribosomes,which resemble cells from prokaryotic domains,in eukaryotic cells.

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Endosymbiosis is a theory based on the resemblance of chloroplasts and mitochondria to bacteria.

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