Question 1

The major histocompatibility complex is important in a T-cell's ability to:

Accepted Answer

A)  recognize specific parasites.
B)  recognize specific bacteria.
C)  recognize specific viruses.
D)  recognize self from nonself.E) B) and C)
F) A) and D)

Question 2

Prokaryotic cells are smaller than eukaryotic cells.What is a plausible explanation?

Accepted Answer

A)  Prokaryotic cell walls limit their cell growth.
B)  Prokaryotes lack the genetic material needed for protein synthesis.
C)  Eukaryotes have compartmentalization, which allows for specialization.
D)  Prokaryotes have more diverse energy sources.E) B) and C)
F) A) and D)

Question 3

Schleiden and Schwann stated the "cell theory," which in its modern form says:

Accepted Answer

A)  all organisms are composed of one or more cells, all cells require oxygen and all cells arise by division of other cells.
B)  all organisms are composed of one or more cells, all cells are the smallest living things and all cells arise by division of other cells.
C)  all organisms are composed of one or more cells, all cells arise spontaneously and all cells vary in size and shape.
D)  all cells will arise spontaneously, all cells require oxygen and all cells are composed of one or more cells.E) A) and C)
F) C) and D)

Question 4

A doctor diagnosis a child with adrenoleukodystrophy (ALD)  a disorder in which there is an accumulation of long fatty acid chains accumulating in the cells of the central nervous system.The issues arise with malfunctions in enzymes associated with which organelle?

Accepted Answer

A)  Golgi bodies
B)  ribosomes
C)  vacuoles
D)  peroxisomesE) A) and B)
F) C) and D)

Question 5

A cytologist is examining a tissue under an electron microscope.He notices that the endoplasmic reticulum of each cell is extremely rough in appearance and he knows that the rough appearance is because of the ribosomes embedded there.He asks why there are so many ribosomes.You respond,

Accepted Answer

A)  "This tissue exports lipids and is very involved with mRNA production."
B)  "This tissue exports proteins to other areas of the body."
C)  "This tissue exports various nucleic acids, hence the large number of ribosomes present on the endoplasmic reticulum in each of those cells."D) A) and B)
E) A) and C)

Question 6

Plants, fungi and bacterial all have:

Accepted Answer

A)  nuclei
B)  cell walls
C)  chloroplasts
D)  lysosomesE) All of the above
F) None of the above

Question 7

You stain a cell with a dye that reacts with an enzyme found in the lysosome.You would also expect to see this dye in the:

Accepted Answer

A)  nucleus.
B)  mitochondria.
C)  endoplasmic reticulum.
D)  cytoplasm.E) A) and C)
F) B) and C)

Question 8

Cilia and flagella of eukaryotic cells are composed of:

Accepted Answer

A)  microtubules in a 9 + 2 arrangement.
B)  protein fibers in a helical arrangement.
C)  actin filaments in a 9 + 2 arrangement.
D)  nine triplets of microtubules in a circle.E) A) and D)
F) A) and C)

Question 9

The evolutionary process that created chloroplasts and mitochondria is:

Accepted Answer

A)  punctuated equilibrium.
B)  evolution.
C)  symbiosis.
D)  endosymbiosis.E) None of the above
F) B) and C)

Question 10

During which cellular process do all three forms of RNA associate?

Accepted Answer

A)  ribosome assembly
B)  chromatin formation
C)  formation of the nucleolus
D)  protein synthesisE) A) and D)
F) B) and C)

Question 11

You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid)  to certain proteins.Knowing that palmitoylated proteins are usually targeted for delivery to the plasma membrane, in which organelles might this enzyme be expressed?

Accepted Answer

A)  Golgi apparatus and nucleus
B)  Golgi apparatus and endoplamic reticulum
C)  Endoplamic reticulum and ribosomes
D)  Endoplamic reticulum and nucleusE) None of the above
F) A) and C)

Question 12

Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the:

Accepted Answer

A)  cytoplasm.
B)  nucleus.
C)  plasma membrane.
D)  cytoskeleton.E) None of the above
F) A) and B)

Question 13

This cellular structure lacks a membrane:

Accepted Answer

A)  microbody
B)  nucleus
C)  nucleoid
D)  endoplasmic reticulumE) A) and B)
F) None of the above

Question 14

The peptidoglycan of bacterial cell walls contains a carbohydrate matrix linked together by short chains of:

Accepted Answer

A)  fatty acids.
B)  steroids.
C)  nucleotides.
D)  amino acids.E) All of the above
F) C) and D)

Exam 4: Cell Structure

Cilia and flagella of eukaryotic cells are composed of:

Correct Answer
verified

The major histocompatibility complex is important in a T-cell's ability to:

Correct Answer
verified

Schleiden and Schwann stated the "cell theory," which in its modern form says:

Correct Answer
verified

You stain a cell with a dye that reacts with an enzyme found in the lysosome.You would also expect to see this dye in the:

Correct Answer
verified

The evolutionary process that created chloroplasts and mitochondria is:

Correct Answer
verified

A cytologist is examining a tissue under an electron microscope.He notices that the endoplasmic reticulum of each cell is extremely rough in appearance and he knows that the rough appearance is because of the ribosomes embedded there.He asks why there are so many ribosomes.You respond,

Correct Answer
verified

This cellular structure lacks a membrane:

Correct Answer
verified

Plants, fungi and bacterial all have:

Correct Answer
verified

During which cellular process do all three forms of RNA associate?

Correct Answer
verified

The peptidoglycan of bacterial cell walls contains a carbohydrate matrix linked together by short chains of:

Correct Answer
verified

A doctor diagnosis a child with adrenoleukodystrophy (ALD) a disorder in which there is an accumulation of long fatty acid chains accumulating in the cells of the central nervous system.The issues arise with malfunctions in enzymes associated with which organelle?

Correct Answer
verified

Prokaryotic cells are smaller than eukaryotic cells.What is a plausible explanation?

Correct Answer
verified

Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the:

Correct Answer
verified

You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid) to certain proteins.Knowing that palmitoylated proteins are usually targeted for delivery to the plasma membrane, in which organelles might this enzyme be expressed?

Correct Answer
verified

Exam 4: Cell Structure

Cilia and flagella of eukaryotic cells are composed of:

Correct AnswerverifiedShow Answer

The major histocompatibility complex is important in a T-cell's ability to:

Correct AnswerverifiedShow Answer

Schleiden and Schwann stated the "cell theory," which in its modern form says:

Correct AnswerverifiedShow Answer

You stain a cell with a dye that reacts with an enzyme found in the lysosome.You would also expect to see this dye in the:

Correct AnswerverifiedShow Answer

The evolutionary process that created chloroplasts and mitochondria is:

Correct AnswerverifiedShow Answer

A cytologist is examining a tissue under an electron microscope.He notices that the endoplasmic reticulum of each cell is extremely rough in appearance and he knows that the rough appearance is because of the ribosomes embedded there.He asks why there are so many ribosomes.You respond,

Correct AnswerverifiedShow Answer

This cellular structure lacks a membrane:

Correct AnswerverifiedShow Answer

Plants, fungi and bacterial all have:

Correct AnswerverifiedShow Answer

During which cellular process do all three forms of RNA associate?

Correct AnswerverifiedShow Answer

The peptidoglycan of bacterial cell walls contains a carbohydrate matrix linked together by short chains of:

Correct AnswerverifiedShow Answer

A doctor diagnosis a child with adrenoleukodystrophy (ALD) a disorder in which there is an accumulation of long fatty acid chains accumulating in the cells of the central nervous system.The issues arise with malfunctions in enzymes associated with which organelle?

Correct AnswerverifiedShow Answer

Prokaryotic cells are smaller than eukaryotic cells.What is a plausible explanation?

Correct AnswerverifiedShow Answer

Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the:

Correct AnswerverifiedShow Answer

You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid) to certain proteins.Knowing that palmitoylated proteins are usually targeted for delivery to the plasma membrane, in which organelles might this enzyme be expressed?

Correct AnswerverifiedShow Answer

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