Question 1

What type of cell has abundant mitochondria?

Accepted Answer

A)   white blood cell, a phagocyte
B)   mucus cell (secretes mucus) 
C)   liver cells that detoxify hydrogen peroxide
D)   cardiac muscle cells (require large amounts of ATP) 
E)   fibroblast (makes protein fibers) F) None of the above
G) A) and B)

Question 2

In general, water-soluble molecules diffuse through the ______ ______; and lipid-soluble molecules diffuse through the ______ ______.

Accepted Answer

A)   membrane channels; membrane channels
B)   membrane channels; lipid bilayer
C)   lipid bilayer; membrane channels
D)   lipid bilayer; lipid bilayer
E)   None of these choices is correct.F) C) and D)
G) A) and E)

Question 3

Which of the following is NOT posttranslational processing?

Accepted Answer

A)   adding polysaccharide side chains to proteins
B)   joining 2 or more amino acid chains
C)   conversion of a pro-protein to a functional protein
D)   removal of introns from pre-mRNA
E)   conversion of a pro-enzyme to a functional enzymeF) A) and D)
G) D) and E)

Question 4

The bulk uptake of material by the formation of a vesicle is called

Accepted Answer

A)   active transport.
B)   diffusion.
C)   endocytosis.
D)   facilitated diffusion.
E)   osmosis.F) A) and D)
G) A) and C)

Question 5

What type of membrane proteins allow cells to identify one another?

Accepted Answer

A)   marker molecules
B)   channel protein
C)   receptor proteins
D)   enzymes
E)   carrier proteinsF) B) and C)
G) A) and D)

Question 6

Messenger RNA

Accepted Answer

A)   is synthesized when a portion of a DNA molecule is transcribed.
B)   directs the synthesis of DNA.
C)   determines the sequence of nucleotides in the anticodons of tRNA.
D)   directs the synthesis of centrioles in the cytoplasm.
E)   is not involved in the synthesis of proteins.F) A) and B)
G) B) and E)

Question 7

Posttranscriptional processing is the modification of

Accepted Answer

A)   proteins to form pro-proteins.
B)   mRNA to form tRNA.
C)   pre-mRNA to form functional mRNA.
D)   exons to form introns.
E)   DNA.F) C) and E)
G) A) and E)

Question 8

You are looking at a cell with the electron microscope and you notice the following characteristics: presence of many mitochondria and lysosomes; few, if any, Golgi apparatus; and many ribosomes. Which of the following is the most likely function of that cell?

Accepted Answer

A)   secretion of lipids
B)   intracellular digestion
C)   DNA replication
D)   modification of protein
E)   absorption of nutrientsF) A) and B)
G) A) and C)

Question 9

A symporter will transport _____ across the cell membrane.

Accepted Answer

A)   two different ions or molecules in opposite directions
B)   two different ions or molecules in the same direction
C)   two of the same ions or molecules in the same direction
D)   one specific ion or molecule
E)   two of the same ions or molecules in opposite directionsF) A) and B)
G) All of the above

Question 10

Which of the following could be used to study general features of cells?

Accepted Answer

A)   a magnifying glass
B)   scanning electron microscope
C)   transmission electron microscope
D)   binoculars
E)   light microscopeF) A) and B)
G) D) and E)

Question 11

Which of the following pairs of terms is mismatched?

Accepted Answer

A)   mitochondria - cristae
B)   Golgi apparatus - cisternae
C)   lysosomes - hydrolytic enzymes
D)   smooth endoplasmic reticulum - chromatin
E)   cilia - basal bodiesF) C) and D)
G) B) and E)

Exam 3: Cell Biology

You are looking at a cell with the electron microscope and you notice the following characteristics: presence of many mitochondria and lysosomes; few, if any, Golgi apparatus; and many ribosomes. Which of the following is the most likely function of that cell?

Correct Answer
verified

Posttranscriptional processing is the modification of

Correct Answer
verified

Which of the following could be used to study general features of cells?

Correct Answer
verified

In general, water-soluble molecules diffuse through the ; and lipid-soluble molecules diffuse through the .

Correct Answer
verified

What type of membrane proteins allow cells to identify one another?

Correct Answer
verified

What type of cell has abundant mitochondria?

Correct Answer
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The bulk uptake of material by the formation of a vesicle is called

Correct Answer
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Which of the following pairs of terms is mismatched?

Correct Answer
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Which of the following is NOT posttranslational processing?

Correct Answer
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A symporter will transport _____ across the cell membrane.

Correct Answer
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Messenger RNA

Correct Answer
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Exam 3: Cell Biology

You are looking at a cell with the electron microscope and you notice the following characteristics: presence of many mitochondria and lysosomes; few, if any, Golgi apparatus; and many ribosomes. Which of the following is the most likely function of that cell?

Correct AnswerverifiedShow Answer

Posttranscriptional processing is the modification of

Correct AnswerverifiedShow Answer

Which of the following could be used to study general features of cells?

Correct AnswerverifiedShow Answer

In general, water-soluble molecules diffuse through the ______ ______; and lipid-soluble molecules diffuse through the ______ ______.

Correct AnswerverifiedShow Answer

What type of membrane proteins allow cells to identify one another?

Correct AnswerverifiedShow Answer

What type of cell has abundant mitochondria?

Correct AnswerverifiedShow Answer

The bulk uptake of material by the formation of a vesicle is called

Correct AnswerverifiedShow Answer

Which of the following pairs of terms is mismatched?

Correct AnswerverifiedShow Answer

Which of the following is NOT posttranslational processing?

Correct AnswerverifiedShow Answer

A symporter will transport _____ across the cell membrane.

Correct AnswerverifiedShow Answer

Messenger RNA

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
verified

In general, water-soluble molecules diffuse through the ; and lipid-soluble molecules diffuse through the .

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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