Question 1

The ____ is responsible for making the lipids that form the cell's membranes.

Accepted Answer

A)   rough ER
B)   smooth ER
C)   Golgi body
D)   peroxisome
E)   mitochondriaF) B) and E)
G) None of the above

Question 2

A hypothetical "microbullet" shot through a phospholipid bilayer will pass the bilayer components in which order?

Accepted Answer

A)   tail → tail → head → head
B)   head → tail → tail → head
C)   head → tail → head → tail
D)   head → head → tail → tail
E)   tail → head → tail → headF) A) and E)
G) B) and D)

Question 3

​A molecular analysis of plasma or nuclear membranes would reveal the presence of _____.

Accepted Answer

A)   ​cellulose and chitin
B)   ​suberin and cutin
C)   ​phospholipids and proteins
D)   ​microtubules and microfilaments
E)   ​phospholipids and nucleic acidsF) D) and E)
G) B) and C)

Question 4

​The size of a cell is limited by the ____.

Accepted Answer

A)   ​lack of building materials
B)   ​size of the organism
C)   ​relationship between the volume of the cell and its surface area
D)   ​job it does
E)   ​materials it has to exchangeF) B) and E)
G) D) and E)

Question 5

​The following are organelles found in animal cells. Match the organelle with the appropriate description. An answer may be used more than once.
-​This organelle replicates independently of the cell and likely evolved from bacteria.
A)​nucleus
B)​mitochondrion
C)​lysosome
D)​Golgi body
E)​ribosome
F)​rough endoplasmic reticulum
G)​smooth endoplasmic reticulum

Accepted Answer

The answer of ​The following are organelles found in animal...

Question 6

Since viruses are typically 20-200 nm in diameter, the ____ microscope is best for viewing them.

Accepted Answer

A)   light
B)   electron
C)   fluorescent
D)   polarizing
E)   contrastingF) None of the above
G) C) and D)

Question 7

Matching
Examine the following figure. Match each letter of the figure with the appropriate cell structure.  ​
-​pilus
A)A
B)B
C)C
D)D
E)E
F)F
G)G

Accepted Answer

The answer of Matching
Examine the following figure. Match each letter...

Question 8

Match each cell structure represented with the appropriate description.
-assembles amino acid into polypeptide chains
A)peroxisomes
B)chloroplasts
C)Golgi bodies
D)DNA molecules
E)cuticle
F)central vacuoles
G)lysosomes
H)mitochondria
I)pseudopods
J)ribosomes

Accepted Answer

The answer of Match each cell structure represented with the...

Question 9

​Plasmodesmata are most similar to ____.

Accepted Answer

A)   ​gap junctions in animal cells
B)   ​tight junctions in bacteria
C)   ​basement membranes in animal cells
D)   ​adhering junctions in heart muscle
E)   ​both tight junctions in bacteria and adhering junctions in heart muscleF) C) and D)
G) D) and E)

Question 10

​Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Accepted Answer

A)   ​pores
B)   ​proteins
C)   ​phospholipids
D)   ​a bilayer construction
E)   ​ribosomesF) All of the above
G) B) and D)

Question 11

Hydrophobic interactions of phospholipid tails make the ____ conformation of cell membranes possible.

Accepted Answer

A)   lipid bilayer
B)   single-layer
C)   rigid
D)   cytoskeletal
E)   nonpolarF) C) and D)
G) A) and E)

Question 12

What accounts for the fluidity that defines the fluid mosaic model of a typical plasma membrane?

Accepted Answer

A)   The proteins, being large, cause the membrane to jiggle around.
B)   The phospholipids collectively form a jellylike substance similar to the cytoplasm.
C)   The phospholipids are not bonded to each other and thus are freer to move around.
D)   Water molecules infiltrate the bilayer causing it to become more watery and thus more fluid.
E)   The phospholipids in a typical plasma membrane form covalent bonds, which are elastic and allow the membrane to stretch.F) A) and E)
G) A) and C)

Question 13

​Archaea were given their own separate domain because they are ____.

Accepted Answer

A)   ​considered a type of bacteria
B)   ​most closely related to eukaryotes
C)   ​multicellular
D)   ​nucleated
E)   ​not prokaryoticF) B) and E)
G) C) and D)

Question 14

​The endomembrane system is composed of ____.

Accepted Answer

A)   ​microtubules, microfilaments, and intermediate filaments
B)   ​endoplasmic reticulum, Golgi apparatus, and peroxisomes
C)   ​vesicles, peroxisomes, and chloroplasts
D)   ​mitochondria, Golgi apparatus, and ribosomes
E)   ​plasma membrane, nuclear envelope, and thylakoid membranesF) A) and E)
G) A) and C)

Question 15

Matching
Examine the following figure. Match each letter of the figure with the appropriate cell structure.  ​
-​flagellum
A)A
B)B
C)C
D)D
E)E
F)F
G)G

Accepted Answer

The answer of Matching
Examine the following figure. Match each letter...

Question 16

​The plasma membrane _____.

Accepted Answer

A)   ​controls the contents of the cell
B)   ​is composed mostly of cholesterol
C)   ​is permeable to ions and polar molecules
D)   ​is free of proteins
E)   ​is rigid and impermeableF) A) and D)
G) B) and D)

Question 17

​According to cell theory, ____.

Accepted Answer

A)   ​all organisms are multicellular
B)   ​all cells come from preexisting cells
C)   ​DNA is the structural and functional unit of life
D)   ​all cells are approximately the same size
E)   ​proteins are the genetic material of cellsF) D) and E)
G) B) and C)

Question 18

​____ are involved in the transfer of genetic information from one bacterial cell to another.

Accepted Answer

A)   ​Flagella
B)   ​Pili
C)   ​Cilia
D)   ​Ribosomes
E)   ​Bacterial chromosomesF) C) and E)
G) A) and E)

Question 19

____ are cellular structures that act like propellers to move a cell through fluid environments.

Accepted Answer

A)   Pili
B)   Microvilli
C)   Cilia
D)   Flagella
E)   MicrofilamentsF) D) and E)
G) B) and E)

Question 20

​The following are organelles found in animal cells. Match the organelle with the appropriate description. An answer may be used more than once.
-​This organelle stores the cell's genetic material.
A)​nucleus
B)​mitochondrion
C)​lysosome
D)​Golgi body
E)​ribosome
F)​rough endoplasmic reticulum
G)​smooth endoplasmic reticulum

Accepted Answer

The answer of ​The following are organelles found in animal...

Exam 3: Cell Structure

What accounts for the fluidity that defines the fluid mosaic model of a typical plasma membrane?

Correct Answer
verified

Match each cell structure represented with the appropriate description. -assembles amino acid into polypeptide chains A)peroxisomes B)chloroplasts C)Golgi bodies D)DNA molecules E)cuticle F)central vacuoles G)lysosomes H)mitochondria I)pseudopods J)ribosomes

Correct Answer
verified

The ____ is responsible for making the lipids that form the cell's membranes.

Correct Answer
verified

Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Correct Answer
verified

A hypothetical "microbullet" shot through a phospholipid bilayer will pass the bilayer components in which order?

Correct Answer
verified

The endomembrane system is composed of ____.

Correct Answer
verified

Correct Answer
verified

Archaea were given their own separate domain because they are ____.

Correct Answer
verified

Hydrophobic interactions of phospholipid tails make the ____ conformation of cell membranes possible.

Correct Answer
verified

A molecular analysis of plasma or nuclear membranes would reveal the presence of _____.

Correct Answer
verified

Since viruses are typically 20-200 nm in diameter, the ____ microscope is best for viewing them.

Correct Answer
verified

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. -pilus A)A B)B C)C D)D E)E F)F G)G

Correct Answer
verified

The plasma membrane _____.

Correct Answer
verified

According to cell theory, ____.

Correct Answer
verified

Correct Answer
verified

____ are involved in the transfer of genetic information from one bacterial cell to another.

Correct Answer
verified

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. -flagellum A)A B)B C)C D)D E)E F)F G)G

Correct Answer
verified

____ are cellular structures that act like propellers to move a cell through fluid environments.

Correct Answer
verified

The size of a cell is limited by the ____.

Correct Answer
verified

Plasmodesmata are most similar to ____.

Correct Answer
verified

Exam 3: Cell Structure

What accounts for the fluidity that defines the fluid mosaic model of a typical plasma membrane?

Correct AnswerverifiedShow Answer

Match each cell structure represented with the appropriate description. -assembles amino acid into polypeptide chains A)peroxisomes B)chloroplasts C)Golgi bodies D)DNA molecules E)cuticle F)central vacuoles G)lysosomes H)mitochondria I)pseudopods J)ribosomes

Correct AnswerverifiedShow Answer

The ____ is responsible for making the lipids that form the cell's membranes.

Correct AnswerverifiedShow Answer

​Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Correct AnswerverifiedShow Answer

A hypothetical "microbullet" shot through a phospholipid bilayer will pass the bilayer components in which order?

Correct AnswerverifiedShow Answer

​The endomembrane system is composed of ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

​Archaea were given their own separate domain because they are ____.

Correct AnswerverifiedShow Answer

Hydrophobic interactions of phospholipid tails make the ____ conformation of cell membranes possible.

Correct AnswerverifiedShow Answer

​A molecular analysis of plasma or nuclear membranes would reveal the presence of _____.

Correct AnswerverifiedShow Answer

Since viruses are typically 20-200 nm in diameter, the ____ microscope is best for viewing them.

Correct AnswerverifiedShow Answer

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. ​ -​pilus A)A B)B C)C D)D E)E F)F G)G

Correct AnswerverifiedShow Answer

​The plasma membrane _____.

Correct AnswerverifiedShow Answer

​According to cell theory, ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

​____ are involved in the transfer of genetic information from one bacterial cell to another.

Correct AnswerverifiedShow Answer

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. ​ -​flagellum A)A B)B C)C D)D E)E F)F G)G

Correct AnswerverifiedShow Answer

____ are cellular structures that act like propellers to move a cell through fluid environments.

Correct AnswerverifiedShow Answer

​The size of a cell is limited by the ____.

Correct AnswerverifiedShow Answer

​Plasmodesmata are most similar to ____.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Correct Answer
verified

Correct Answer
verified

The endomembrane system is composed of ____.

Correct Answer
verified

Correct Answer
verified

Archaea were given their own separate domain because they are ____.

Correct Answer
verified

Correct Answer
verified

A molecular analysis of plasma or nuclear membranes would reveal the presence of _____.

Correct Answer
verified

Correct Answer
verified

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. -pilus A)A B)B C)C D)D E)E F)F G)G

Correct Answer
verified

The plasma membrane _____.

Correct Answer
verified

According to cell theory, ____.

Correct Answer
verified

Correct Answer
verified

____ are involved in the transfer of genetic information from one bacterial cell to another.

Correct Answer
verified

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. -flagellum A)A B)B C)C D)D E)E F)F G)G

Correct Answer
verified

Correct Answer
verified

The size of a cell is limited by the ____.

Correct Answer
verified

Plasmodesmata are most similar to ____.

Correct Answer
verified