Question 1

​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 membranes 
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 membranes

Question 2

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

Question 3

​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)  ​ribosomes 
A)  ​pores 
B)  ​proteins 
C)  ​phospholipids 
D)  ​a bilayer construction 
E)  ​ribosomes

Question 4

​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 impermeable 
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 impermeable

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

​____ 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 chromosomes 
A)  ​Flagella 
B)  ​Pili 
C)  ​Cilia 
D)  ​Ribosomes 
E)  ​Bacterial chromosomes

Question 7

​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 exchange 
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 exchange

Question 8

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)  nonpolar 
A)  lipid bilayer 
B)  single-layer 
C)  rigid 
D)  cytoskeletal 
E)  nonpolar

Question 9

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. 
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.

Question 10

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

Question 11

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 12

​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 cells 
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 cells

Question 13

​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...

Question 14

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 15

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)  contrasting 
A)  light 
B)  electron 
C)  fluorescent 
D)  polarizing 
E)  contrasting

Question 16

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 → head 
A)  tail → tail → head → head 
B)  head → tail → tail → head 
C)  head → tail → head → tail 
D)  head → head → tail → tail 
E)  tail → head → tail → head

Question 17

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 18

____ 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)  Microfilaments 
A)  Pili 
B)  Microvilli 
C)  Cilia 
D)  Flagella 
E)  Microfilaments

Question 19

​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 muscle 
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 muscle

Question 20

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)  mitochondria 
A)  rough ER 
B)  smooth ER 
C)  Golgi body 
D)  peroxisome 
E)  mitochondria

Exam 3: Cell Structure

​The endomembrane system is composed of ____.

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

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

​The plasma membrane _____.

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

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

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

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

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

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

​According to cell theory, ____.

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

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

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

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

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

​Plasmodesmata are most similar to ____.

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

Invitation to Biology

Molecules of Life

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters

The endomembrane system is composed of ____.

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

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

The plasma membrane _____.

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

The size of a cell is limited by the ____.

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

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

According to cell theory, ____.

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

Plasmodesmata are most similar to ____.