Question 1

What evidence suggests that mitochondria might have evolved before chloroplasts?

Accepted Answer

A)  Mitochondria can sometimes divide to produce chloroplasts.
B)  Only mitochondria have their own DNA.
C)  Some mitochondria have chloroplasts inside of them.
D)  Almost all eukaryotes have mitochondria but only some cells have chloroplasts.E) B) and C)
F) A) and D)

Question 2

In eukaryotic cells,what name is given to the region between the nucleus and the plasma membrane?

Accepted Answer

A)  cytoplasm
B)  phospholipid bilayer
C)  nucleoid
D)  chloroplastE) B) and D)
F) None of the above

Question 3

Which of the following is a characteristic of mitochondria that suggests that they might have evolved from free-living bacteria?

Accepted Answer

A)  Mitochondria have cell walls.
B)  The plasma membrane of a mitochondrion,forming the surface of this organelle,is the site of many important steps of cellular respiration.
C)  Mitochondria have their own DNA.
D)  Mitochondria rely upon proteins as their source of energy.E) A) and B)
F) C) and D)

Question 4

During a race such as a marathon,the skeletal muscle cells in your legs use a lot of energy to continually contract and power your muscles.What organelle is most likely abundant in skeletal muscle cells?

Accepted Answer

A)  mitochondria
B)  Golgi apparatus
C)  smooth endoplasmic reticulum
D)  rough endoplasmic reticulumE) B) and C)
F) B) and D)

Question 5

The structural combination of DNA and protein forms ________.

Accepted Answer

A)  nucleoli
B)  RNA
C)  chromatin
D)  ribosomesE) A) and C)
F) A) and B)

Question 6

Which of the following is a feature of prokaryotic cells but NOT eukaryotic cells?

Accepted Answer

A)  pili
B)  cell wall
C)  flagella
D)  DNAE) None of the above
F) C) and D)

Question 7

Why do you think the bacteria start to decline when treated with antibiotic C but then begin to grow as time goes on?

Accepted Answer

A)  Some bacteria with resistance to antibiotic C were selected for over time.
B)  Additional bacteria were added to the experimental group.
C)  Antibiotic C degraded and thus was no longer effective.
D)  This is the normal course of bacterial growth no matter which antibiotic is applied.E) A) and D)
F) All of the above

Question 8

Where does protein synthesis take place?

Accepted Answer

A)  in the nucleolus
B)  on smooth endoplasmic reticulum
C)  on ribosomes
D)  in the nucleusE) B) and C)
F) A) and D)

Question 9

Which plant organelle is responsible for photosynthesis?

Accepted Answer

A)  smooth endoplasmic reticulum
B)  mitochondrion
C)  ribosome
D)  chloroplastE) B) and C)
F) None of the above

Question 10

Functions of the smooth endoplasmic reticulum include ________.

Accepted Answer

A)  steroid synthesis,protein synthesis,and drug detoxification
B)  lipid synthesis,protein synthesis,and drug detoxification
C)  lipid synthesis,steroid synthesis,and drug detoxification
D)  lipid synthesis,steroid synthesis,and storage of genetic informationE) A) and C)
F) None of the above

Question 11

Some ribosomes are suspended in the cytosol of a cell,whereas other ribosomes ________.

Accepted Answer

A)  make proteins inside the nucleus
B)  are found on the plasma membrane
C)  are attached to the smooth endoplasmic reticulum
D)  are attached to the outside of the nucleusE) A) and D)
F) None of the above

Question 12

Which of the following is a characteristic of chloroplasts that suggests that they might have evolved from free-living bacteria?

Accepted Answer

A)  Chloroplasts have cell walls.
B)  Chloroplasts contain pigments.
C)  Chloroplasts have their own DNA.
D)  A single,highly folded plasma membrane surrounds chloroplasts.E) A) and C)
F) B) and D)

Question 13

The nuclear envelope is composed of ________.

Accepted Answer

A)  chromatin
B)  DNA
C)  a double membrane
D)  carbohydratesE) A) and D)
F) A) and C)

Question 14

The figure below shows a Paramecium,a single-celled freshwater protist.The hairlike structures visible on the Paramecium allow it to move.These structures are ________.

Accepted Answer

A)  microfilaments
B)  intermediate filaments
C)  flagella
D)  ciliaE) All of the above
F) A) and B)

Question 15

Similar to the nucleus,chloroplasts and mitochondria are ________.

Accepted Answer

A)  surrounded by two membranes
B)  able to synthesize carbohydrates
C)  manufactured by the nucleolus
D)  able to synthesize lipidsE) C) and D)
F) B) and C)

Question 16

A protist that contains contractile vacuoles most likely lives ________.

Accepted Answer

A)  in a marine environment
B)  within the cells of another organism
C)  in fresh water
D)  in iceE) A) and B)
F) A) and C)

Question 17

Which of the following structures manufactures the components of ribosomes?

Accepted Answer

A)  nucleus
B)  cytoplasm
C)  endoplasmic reticulum
D)  nucleolusE) A) and B)
F) C) and D)

Question 18

Which theory states that all living things are composed of cells?

Accepted Answer

A)  cell theory
B)  Hooke's rule
C)  evolutionary theory
D)  Mendel's lawE) None of the above
F) A) and B)

Question 19

If a cell's lysosomes burst,the cell would ________.

Accepted Answer

A)  shrivel
B)  divide into two cells
C)  digest itself
D)  need to manufacture more lysosomesE) A) and B)
F) A) and C)

Question 20

Vacuoles are ________.

Accepted Answer

A)  membranous sacs
B)  manufactured by ribosomes
C)  composed of microtubules
D)  found only in plant cellsE) A) and C)
F) All of the above

Exam 4: A Tour of the Cell

Why do you think the bacteria start to decline when treated with antibiotic C but then begin to grow as time goes on?

Correct AnswerverifiedShow Answer

If a cell's lysosomes burst,the cell would ________.

Correct AnswerverifiedShow Answer

Which theory states that all living things are composed of cells?

Correct AnswerverifiedShow Answer

The structural combination of DNA and protein forms ________.

Correct AnswerverifiedShow Answer

The nuclear envelope is composed of ________.

Correct AnswerverifiedShow Answer

Which of the following structures manufactures the components of ribosomes?

Correct AnswerverifiedShow Answer

Some ribosomes are suspended in the cytosol of a cell,whereas other ribosomes ________.

Correct AnswerverifiedShow Answer

Which of the following is a feature of prokaryotic cells but NOT eukaryotic cells?

Correct AnswerverifiedShow Answer

Similar to the nucleus,chloroplasts and mitochondria are ________.

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of mitochondria that suggests that they might have evolved from free-living bacteria?

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of chloroplasts that suggests that they might have evolved from free-living bacteria?

Correct AnswerverifiedShow Answer

Which plant organelle is responsible for photosynthesis?

Correct AnswerverifiedShow Answer

Functions of the smooth endoplasmic reticulum include ________.

Correct AnswerverifiedShow Answer

Vacuoles are ________.

Correct AnswerverifiedShow Answer

What evidence suggests that mitochondria might have evolved before chloroplasts?

Correct AnswerverifiedShow Answer

In eukaryotic cells,what name is given to the region between the nucleus and the plasma membrane?

Correct AnswerverifiedShow Answer

The figure below shows a Paramecium,a single-celled freshwater protist.The hairlike structures visible on the Paramecium allow it to move.These structures are ________.

Correct AnswerverifiedShow Answer

A protist that contains contractile vacuoles most likely lives ________.

Correct AnswerverifiedShow Answer

During a race such as a marathon,the skeletal muscle cells in your legs use a lot of energy to continually contract and power your muscles.What organelle is most likely abundant in skeletal muscle cells?

Correct AnswerverifiedShow Answer

Where does protein synthesis take place?

Correct AnswerverifiedShow Answer

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