Question 1

Chloroplasts are not:

Accepted Answer

A)  Glucose factories
B)  Responsible for respiration
C)  Found in plants
D)  Organelles that carry out photosynthesis
E)  Found in members of the kingdom protistaF) B) and D)
G) A) and D)

Question 2

A wild duck needs a steady supply of energy to be able to fly for hours and has dark breast meat.Domesticated chickens rarely fly and have white breast meat.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)  Less cytoplasm
D)  More Golgi
E)  More mitochondriaF) B) and D)
G) B) and E)

Question 3

In order for a milk protein to be secreted,it must be moved between organelles:

Accepted Answer

A)  In spheres of lipid bilayer called vesicles
B)  By release into the cytoplasm
C)  By translation in each organelle
D)  Attached to transporter proteins
E)  By the fusion of organelles with each otherF) A) and B)
G) B) and D)

Question 4

Scientific evidence is beginning to suggest that some elements of the cytoskeleton may have originated in bacteria.

Accepted Answer

A) True 
 B)False

Question 5

Mitochondria do not:

Accepted Answer

A)  Have their own DNA
B)  Extract energy from nutrients
C)  Have two membrane layers
D)  Have cristae
E)  Carry out photosynthesisF) B) and E)
G) None of the above

Question 6

The theory of endosymbiosis is based on:

Accepted Answer

A)  The knowledge that ribosomes are structures found in bacteria, plants, and animals
B)  The experiments in which bacteria were made to grow in plant cells forming chloroplasts
C)  The knowledge that chloroplasts and mitochondria resemble bacteria
D)  Evidence from the fossil record
E)  Similarities between chloroplasts and other organelles in animalsF) All of the above
G) A) and E)

Question 7

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 waterF) A) and B)
G) A) and C)

Question 8

The Golgi apparatus is not:

Accepted Answer

A)  An organelle
B)  A processing center
C)  Studded with ribosomes
D)  Is not a stack of membrane enclosed sacs
E)  Involved with secretion of cellular substancesF) A) and B)
G) B) and D)

Question 9

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-foldF) C) and D)
G) A) and B)

Question 10

Flagella are not:

Accepted Answer

A)  Found on eukaryotic cells
B)  Found on prokaryotic cells
C)  Used for movement
D)  Composed of microtubules
E)  Short appendagesF) C) and E)
G) A) and E)

Question 11

A central vacuole:

Accepted Answer

A)  Produces protein
B)  Produces turgor pressure
C)  Produces mRNA
D)  Stores genetic information
E)  Produces energy from nutrientsF) B) and C)
G) A) and B)

Question 12

How do sperm move to fertilize eggs?

Accepted Answer

A)  With flagella made of microtubules
B)  By diffusion
C)  With flagella made of actin
D)  With cilia made of microtubules
E)  With cilia made of actinF) A) and E)
G) A) and D)

Question 13

The scientist (scientists) given credit for disproving the theory of spontaneous generation is (are) :

Accepted Answer

A)  Robert Hooke
B)  Mathias Schleiden and Theodore Schwann
C)  Rudolf Virchow
D)  Antony van Leeuwenhoek
E)  Louis PasteurF) All of the above
G) B) and E)

Question 14

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 volume increase?

Accepted Answer

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

Question 15

When membrane-bound receptors like HER2 bind to molecules outside of the cell,they must move through the membrane and bind to a second HER2 receptor,forming a dimer,in order for the signal to be sent inside the cell.This is possible because the cell membrane is _____.

Accepted Answer

A)  A semi-permeable barrier
B)  A fluid mosaic
C)  Rigid like a cell wall
D)  Hydrophobic
E)  A barrier to ionsF) A) and C)
G) B) and D)

Question 16

The ways by which a cell avoids surface limitations to diffusion does not include:

Accepted Answer

A)  Having a nucleus
B)  A flattened shape
C)  Being long and thin
D)  Having specialized structures for labor which are termed organelles
E)  Having a vacuole filled with waterF) A) and D)
G) B) and D)

Question 17

What is the role of tubulin in mitosis in eukaryotic cells?

Accepted Answer

A)  It forms the centromere that holds sister chromatids together
B)  It forms the spindle that pulls chromosomes apart
C)  It is necessary for the DNA to replicate
D)  It is necessary for the cell to grow
E)  It is necessary for the nucleosome to form in condensing chromosomesF) C) and E)
G) A) and E)

Question 18

When the scientists "turned off" MreB and Mbl genes which process were they inhibiting?

Accepted Answer

A)  Transcription
B)  Translation
C)  Replication
D)  Cell division
E)  SplicingF) A) and B)
G) A) and E)

Question 19

Bacteria with which cell shape would be least likely to have a gene for MreB?

Accepted Answer

A)  Rods
B)  Spherical
C)  Filaments
D)  CorkscrewsE) All of the above
F) A) and D)

Question 20

The three domains in the Woese system of classification are:

Accepted Answer

A)  Monera, Bacteria, and Eukarya
B)  Fungi, Protista, and Animalia
C)  Archaea, Eukarya, and Protista
D)  Monera, Bacteria, and Eukarya.
E)  Archaea, Bacteria, and Eukarya,F) A) and D)
G) A) and C)

Exam 3: The Dynamic Cell

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

Correct AnswerverifiedShow Answer

What is the role of tubulin in mitosis in eukaryotic cells?

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A central vacuole:

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Scientific evidence is beginning to suggest that some elements of the cytoskeleton may have originated in bacteria.

Correct AnswerverifiedShow Answer

How do sperm move to fertilize eggs?

Correct AnswerverifiedShow Answer

Mitochondria do not:

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In order for a milk protein to be secreted,it must be moved between organelles:

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The theory of endosymbiosis is based on:

Correct AnswerverifiedShow Answer

The three domains in the Woese system of classification are:

Correct AnswerverifiedShow Answer

The scientist (scientists) given credit for disproving the theory of spontaneous generation is (are) :

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The Golgi apparatus is not:

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Flagella are not:

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Chloroplasts are not:

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The ways by which a cell avoids surface limitations to diffusion does not include:

Correct AnswerverifiedShow Answer

Bacteria with which cell shape would be least likely to have a gene for MreB?

Correct AnswerverifiedShow Answer

When the scientists "turned off" MreB and Mbl genes which process were they inhibiting?

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

When membrane-bound receptors like HER2 bind to molecules outside of the cell,they must move through the membrane and bind to a second HER2 receptor,forming a dimer,in order for the signal to be sent inside the cell.This is possible because the cell membrane is _____.

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 volume increase?

Correct AnswerverifiedShow Answer

A phospholipid molecule:

Correct AnswerverifiedShow Answer

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