Question 1

Each time the water in a cell freezes slowly,long sharp crystals spear through the membrane structures of the cell.However,in the frozen state,virtually no chemical reactions occur.The most likely explanation for the bad taste of meat that has "freezer burn" from repeated freezing is the destruction of

Accepted Answer

A)  the Golgi bodies and their vesicles.
B)  lysosomes and resultant autodigestion.
C)  rough endoplasmic reticulum causing the release of ribosomes.
D)  ribosomes causing them to break into subunits.
E)  the nuclear membrane causing mixing of nucleoplasm and cytoplasm.F) B) and C)
G) A) and E)

Question 2

As a cell increases in size,the:

Accepted Answer

A)  surface area increases as the volume decreases.
B)  surface area,volume and surface area volume ratio increases.
C)  surface area and volume increase,but the surface area: volume ratio decreases.
D)  surface area and volume decreases the surface area: volume ratio increases.E) A) and D)
F) C) and D)

Question 3

Which is NOT a characteristic of mitochondria?

Accepted Answer

A)  A mitochondrion has two membranes.
B)  Mitochondria are the site of cellular respiration.
C)  Mitochondria have a single membrane for cellular respiration.
D)  Mitochondria contain DNA and ribosomes.
E)  The inner space of the mitochondrion contains a fluid matrix.F) A) and D)
G) A) and C)

Question 4

What figure has the greatest surface area (height x width x number of sides x number of cubes) ?

Accepted Answer

A)  Figure A
B)  Figure B
C)  Figure C
D)  All of these are the same.E) A) and C)
F) A) and D)

Question 5

During cellular movement which of the following filaments will be the ones that are responsible for attaching and pulling the other filaments along?

Accepted Answer

A)  actin
B)  myosin
C)  trypsin
D)  intermediate filamentsE) B) and D)
F) B) and C)

Question 6

Cell biologists have introduced radioactively labeled carbohydrates,fats and amino acids to living cells,allowed time for cell metabolism,and then disrupted the cells in a blender and separated out the various cell organelles from the cytoplasm.They found the radioactive molecules could soon be detected as part of various cellular compounds,although the visible cell structures appeared unchanged.This leads us to conclude that

Accepted Answer

A)  these "food" molecules are used only for energy.
B)  most cell components are constantly being broken down and rebuilt.
C)  radioactivity was transferred from the introduced molecules to the resident stable molecules.
D)  molecules diffuse at random through the cytoplasm and into cell organelles.
E)  radioactivity has an unusual role in metabolism of living cells.F) B) and D)
G) A) and B)

Question 7

The springtail is a very common small insect that lives in rotten logs,rich soil,and other humid places.Its cuticle is water repelling (hydrophobic) except for a strange organ,the collophore,on its ventral side.Because it lacks the excretory organs of other insects,the springtail has this organ in contact with the water (it is responsible for ion balance and secretion of wastes) .If we examined the cell structure of this collophore,we would expect to find a high number of

Accepted Answer

A)  nuclei.
B)  ribosomes.
C)  Golgi bodies.
D)  lysosomes.
E)  centrioles.F) B) and D)
G) A) and C)

Question 8

If a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes,which protein filaments should she be studying?

Accepted Answer

A)  actin
B)  intermediates
C)  microtubules
D)  myosinE) C) and D)
F) A) and D)

Question 9

Which statement about the nucleus is incorrect?

Accepted Answer

A)  The nucleus contains the genetic material of the cell.
B)  The nucleus contains the information that ribosomes use to carry out protein synthesis.
C)  The nucleus contains the instructions for copying itself.
D)  The nucleus contains the information that ribosomes use to carry out cellular respiration.E) C) and D)
F) B) and D)

Question 10

Which statement is NOT true about bacteria?

Accepted Answer

A)  Bacteria contain membrane bound organelles.
B)  Some are photosynthetic.
C)  Some are motile due to flagella.
D)  All bacteria are prokaryotes.
E)  Bacteria have a cell wall that contains peptidoglycan.F) C) and D)
G) B) and E)

Question 11

The cells that line our respiratory tract,and one-celled paramecia both have these short hair-like projections.

Accepted Answer

A)  flagella
B)  microfilaments
C)  centrioles
D)  cilia
E)  piliF) A) and C)
G) A) and B)

Question 12

What cellular organelle is responsible for receiving the mRNA and turning it into a protein?

Accepted Answer

A)  Golgi body
B)  ribosome
C)  nucleus
D)  lysosomeE) B) and D)
F) None of the above

Question 13

After proteins are formed by the ribosomes located on the endoplasmic reticulum,what is the next organelle to which they could be transported?

Accepted Answer

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

Question 14

Which of the following gives rise to both lysosomes and vesicles?

Accepted Answer

A)  rough endoplasmic reticulum
B)  mitochondria
C)  Golgi apparatus
D)  ribosomesE) C) and D)
F) None of the above

Exam 4: Cell Structure and Function

Correct Answer
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Correct Answer
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The cells that line our respiratory tract,and one-celled paramecia both have these short hair-like projections.

Correct Answer
verified

What cellular organelle is responsible for receiving the mRNA and turning it into a protein?

Correct Answer
verified

After proteins are formed by the ribosomes located on the endoplasmic reticulum,what is the next organelle to which they could be transported?

Correct Answer
verified

Which of the following gives rise to both lysosomes and vesicles?

Correct Answer
verified

Which statement about the nucleus is incorrect?

Correct Answer
verified

What figure has the greatest surface area (height x width x number of sides x number of cubes) ?

Correct Answer
verified

Which statement is NOT true about bacteria?

Correct Answer
verified

Which is NOT a characteristic of mitochondria?

Correct Answer
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If a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes,which protein filaments should she be studying?

Correct Answer
verified

During cellular movement which of the following filaments will be the ones that are responsible for attaching and pulling the other filaments along?

Correct Answer
verified

As a cell increases in size,the:

Correct Answer
verified

Correct Answer
verified

Exam 4: Cell Structure and Function

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The cells that line our respiratory tract,and one-celled paramecia both have these short hair-like projections.

Correct AnswerverifiedShow Answer

What cellular organelle is responsible for receiving the mRNA and turning it into a protein?

Correct AnswerverifiedShow Answer

After proteins are formed by the ribosomes located on the endoplasmic reticulum,what is the next organelle to which they could be transported?

Correct AnswerverifiedShow Answer

Which of the following gives rise to both lysosomes and vesicles?

Correct AnswerverifiedShow Answer

Which statement about the nucleus is incorrect?

Correct AnswerverifiedShow Answer

What figure has the greatest surface area (height x width x number of sides x number of cubes) ?

Correct AnswerverifiedShow Answer

Which statement is NOT true about bacteria?

Correct AnswerverifiedShow Answer

Which is NOT a characteristic of mitochondria?

Correct AnswerverifiedShow Answer

If a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes,which protein filaments should she be studying?

Correct AnswerverifiedShow Answer

During cellular movement which of the following filaments will be the ones that are responsible for attaching and pulling the other filaments along?

Correct AnswerverifiedShow Answer

As a cell increases in size,the:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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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