Question 1

Between their specialized functions,the rough and smooth endoplasmic reticulum do not

Accepted Answer

A)   produce lipids.
B)   form vesicles for transport to the Golgi apparatus.
C)   produce mRNA.
D)   detoxify poisons.
E)   produce proteins.F) C) and D)
G) A) and B)

Question 2

When phospholipids are mixed with water their ____ interact with water and their ____ are repelled,forming a lipid bilayer.

Accepted Answer

A)   hydrophobic tails; hydrophilic heads
B)   hydrophilic heads; hydrophobic tails
C)   hydrophobic heads; hydrophilic tails
D)   hydrophilic tails; hydrophobic headsE) B) and C)
F) A) and C)

Question 3

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

Accepted Answer

A)   Louis Pasteur.
B)   Mathias Schleiden and Theodore Schwann.
C)   Robert Hooke.
D)   Rudolf Virchow.
E)   Antony van Leeuwenhoek.F) B) and C)
G) A) and B)

Question 4

This type of cell connection,lined by the cell membranes and allowing transport of molecules between cells,is the

Accepted Answer

A)   plasmodesma.
B)   anchoring junction.
C)   gap junction.
D)   tight junction.E) A) and D)
F) A) and C)

Question 5

You have macrophage white blood cells that can respond to injury and infection by moving to the site of the wound.They can ingest infectious bacteria or virus,and digest the organic molecules of what they take in.The digestion organelle they have is the

Accepted Answer

A)   golgi apparatus.
B)   ribosome.
C)   peroxisome.
D)   lysosome.E) A) and B)
F) B) and C)

Question 6

Identify the largest distinction between the theory of spontaneous generation and the cell theory.

Accepted Answer

A)   Spontaneous generation can be observed with the microscope, while cell theory is newer and has not yet been proven.
B)   Spontaneous generation only happens with animalcules and germs, while cell theory applies to other, more complex organisms.
C)   Spontaneous generation proposes life can form from available molecule components, while cell theory explains cell reproduction functions.
D)   Spontaneous generation is found in organisms that don't have cells, while cell theory happens in organisms that do have cells.E) C) and D)
F) A) and B)

Question 7

Nuclear pores have proteins that open and close,controlling flow of cell solutions and molecules in and out of the nuclear envelope (a double-thick membrane) .In this,nuclear pores are similar in structure and function to

Accepted Answer

A)   gap junctions.
B)   vacuoles.
C)   cilia.
D)   cytoskeleton microtubules.E) B) and C)
F) A) and B)

Question 8

The Woese system of classification consists of a broad taxonomic grouping of organisms called the domain.

Accepted Answer

A) True 
 B)False

Question 9

Organisms included in the diverse domain Eukarya include

Accepted Answer

A)   animals, plants, fungi, and protists.
B)   bacteria, fungi, and animals.
C)   animals, plants, and bacteria.
D)   Protista, Monera, and Animalia.
E)   fungi, protists, and archaeans.F) D) and E)
G) A) and E)

Question 10

A structure found in cells of all three domains,prokaryotes and eukaryotes,is the

Accepted Answer

A)   ribosome.
B)   chloroplast.
C)   cilium.
D)   mitochondria.
E)   cell wall.F) B) and C)
G) A) and E)

Question 11

How many micrometers (μm) fit in a meter?

Accepted Answer

A)   1,000,000
B)   1,000
C)   100,000
D)   100
E)   10F) B) and C)
G) A) and B)

Question 12

Enzymes that breakdown organic molecules in a cell,by hydrolysis,are typically found in which organelle?

Accepted Answer

A)   lysosome
B)   cytoplasm
C)   endoplasmic reticulum
D)   mitochondrion
E)   GolgiF) A) and B)
G) B) and E)

Question 13

What is the role of actin in eukaryotic cells?

Accepted Answer

A)   It provides strength in stretching and compression of a cell.
B)   It forms the spindle that pulls chromosomes apart.
C)   It forms the centromere that holds sister chromatids together.
D)   It is necessary for the DNA to replicate.
E)   It forms the structures that inside flagella that allow the bending motion for cell motion (swimming) .F) B) and D)
G) A) and B)

Question 14

A prokaryotic cell

Accepted Answer

A)   has membrane-bounded organelles.
B)   has a nucleus.
C)   has a cell wall made of chitin.
D)   does not have a nucleus.
E)   is at least ten micrometers in diameter.F) A) and C)
G) B) and C)

Question 15

An organelle found in plant cells and some members of the kingdom Protista but not in animal cells is a

Accepted Answer

A)   cell membrane.
B)   lysosome.
C)   ribosome.
D)   chloroplast.
E)   centriole.F) All of the above
G) A) and E)

Question 16

One reason viruses should not be considered living organisms is because they do not consist of one or more cells.

Accepted Answer

A)   contains peptidoglycan.
B)   protects the cell.
C)   gives the bacterium a distinctive shape
D)   All of these answer choices are correct.
E)   helps prevent the cell from bursting.F) A) and C)
G) All of the above

Question 17

The Golgi apparatus is not

Accepted Answer

A)   a processing center.
B)   involved with secretion of cellular substances.
C)   studded with ribosomes.
D)   a stack of membrane-enclosed sacs.
E)   an organelle.F) A) and C)
G) A) and B)

Question 18

Which of these is an incorrect comparison between flagella and cilia?

Accepted Answer

A)   Flagella have essentially the same internal structure of cytoskeleton proteins as cilia.
B)   Flagella are used for propulsion, while cilia are used to attach cells to other cells or surfaces.
C)   Flagella are found in all three domains of organisms, while cilia are found only in Eukarya.
D)   Flagella are longer structures than cilia.E) All of the above
F) A) and B)

Question 19

Cilia in eukaryote cells

Accepted Answer

A)   can move in unison to establish a current to move objects, as with human eggs through the reproductive tract.
B)   can assist digestive tract cells in absorbing food molecules.
C)   can be used in eukaryotes to do any of these functions.
D)   can beat in unison to help a single cell, such as a protist, to swim.
E)   can add surface area for senses such as taste, smell, balance, hearing.F) All of the above
G) B) and E)

Question 20

All living cells have a cell wall.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function

Identify the largest distinction between the theory of spontaneous generation and the cell theory.

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The Woese system of classification consists of a broad taxonomic grouping of organisms called the domain.

Correct AnswerverifiedShow Answer

This type of cell connection,lined by the cell membranes and allowing transport of molecules between cells,is the

Correct AnswerverifiedShow Answer

A structure found in cells of all three domains,prokaryotes and eukaryotes,is the

Correct AnswerverifiedShow Answer

One reason viruses should not be considered living organisms is because they do not consist of one or more cells.

Correct AnswerverifiedShow Answer

Enzymes that breakdown organic molecules in a cell,by hydrolysis,are typically found in which organelle?

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All living cells have a cell wall.

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A prokaryotic cell

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What is the role of actin in eukaryotic cells?

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Between their specialized functions,the rough and smooth endoplasmic reticulum do not

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

Correct AnswerverifiedShow Answer

Nuclear pores have proteins that open and close,controlling flow of cell solutions and molecules in and out of the nuclear envelope (a double-thick membrane) .In this,nuclear pores are similar in structure and function to

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When phospholipids are mixed with water their ____ interact with water and their ____ are repelled,forming a lipid bilayer.

Correct AnswerverifiedShow Answer

Cilia in eukaryote cells

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Organisms included in the diverse domain Eukarya include

Correct AnswerverifiedShow Answer

An organelle found in plant cells and some members of the kingdom Protista but not in animal cells is a

Correct AnswerverifiedShow Answer

You have macrophage white blood cells that can respond to injury and infection by moving to the site of the wound.They can ingest infectious bacteria or virus,and digest the organic molecules of what they take in.The digestion organelle they have is the

Correct AnswerverifiedShow Answer

Which of these is an incorrect comparison between flagella and cilia?

Correct AnswerverifiedShow Answer

How many micrometers (μm) fit in a meter?

Correct AnswerverifiedShow Answer

The Golgi apparatus is not

Correct AnswerverifiedShow Answer

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When phospholipids are mixed with water their interact with water and their are repelled,forming a lipid bilayer.

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