Question 1

In order for a milk protein to be secreted in mammals,these events must happen in the correct organelle function sequence.

Accepted Answer

A)  DNA transcription in the nucleus-passage of mRNA to the Golgi apparatus; translation of mRNA by the ribosome-conversion of mRNA to proteins by the cytoskeleton 
B)  production of proteins in the nucleus-passage of proteins through the endoplasmic reticulum; packaging of proteins in the Golgi apparatus; activation of the proteins by the mitochondrion 
C)  attached to the smooth endoplasmic reticulum 
D)  DNA transcription in the nucleus-attaching and moving mRNA with cytoskeleton; translation to build proteins in the smooth endoplasmic reticulum-secrete the milk proteins from the cell 
E)  DNA transcription in the nucleus-passage of mRNA out of nucleus; translation of mRNA by the ribosome-packaging of proteins by the endoplasmic reticulum 
A)  DNA transcription in the nucleus-passage of mRNA to the Golgi apparatus; translation of mRNA by the ribosome-conversion of mRNA to proteins by the cytoskeleton 
B)  production of proteins in the nucleus-passage of proteins through the endoplasmic reticulum; packaging of proteins in the Golgi apparatus; activation of the proteins by the mitochondrion 
C)  attached to the smooth endoplasmic reticulum 
D)  DNA transcription in the nucleus-attaching and moving mRNA with cytoskeleton; translation to build proteins in the smooth endoplasmic reticulum-secrete the milk proteins from the cell 
E)  DNA transcription in the nucleus-passage of mRNA out of nucleus; translation of mRNA by the ribosome-packaging of proteins by the endoplasmic reticulum E

Question 2

The primary structural molecule composing a cell membrane is a(n)

Accepted Answer

A)  cholesterol molecule. 
B)  enzyme molecule. 
C)  sugar molecule attached to a protein. 
D)  phospholipid molecule. 
E)  protein molecule. 
A)  cholesterol molecule. 
B)  enzyme molecule. 
C)  sugar molecule attached to a protein. 
D)  phospholipid molecule. 
E)  protein molecule. D

Question 3

An understanding of cellular biology is helping us find new treatments for many diseases.

Accepted Answer

A) True 
 B)False  True

Question 4

Penicillin halts bacterial infections

Accepted Answer

A)  by stimulating a person's immune system. 
B)  All of the answer choices are correct. 
C)  by interfering with the construction of the cell wall. 
D)  by causing the DNA of a bacterium to mutate. 
E)  by damaging the cell membrane. 
A)  by stimulating a person's immune system. 
B)  All of the answer choices are correct. 
C)  by interfering with the construction of the cell wall. 
D)  by causing the DNA of a bacterium to mutate. 
E)  by damaging the cell membrane.

Question 5

You are working on a forensics team and collect some cells from a crime scene.The cells are angular,rigid,and have a cell wall made up of cellulose.This sample most likely came from a(n)

Accepted Answer

A)  plant. 
B)  All of the answer choices are correct. 
C)  animal. 
D)  fungus. 
E)  All could be correct. 
A)  plant. 
B)  All of the answer choices are correct. 
C)  animal. 
D)  fungus. 
E)  All could be correct.

Question 6

A wild duck needs a steady supply of energy to be able to fly for hours.Domesticated chickens rarely fly.As a result you would expect to find _____ in the breast muscles of wild ducks than domesticated chickens.

Accepted Answer

A)  fewer mitochondria 
B)  more cytoplasm 
C)  more mitochondria 
D)  more Golgi 
E)  less cytoplasm 
A)  fewer mitochondria 
B)  more cytoplasm 
C)  more mitochondria 
D)  more Golgi 
E)  less cytoplasm

Question 7

What is the selective advantage of a mature red blood cell being flat rather than a sphere?

Accepted Answer

A)  It provides more membrane for the electron transport chains where oxygen is consumed. 
B)  It maximizes the relative surface area available to exchange gasses. 
C)  The cell's surface area to volume will decrease, making it easier for the cell to fit through arteries and veins. 
D)  It provides more sites for the membrane-bound hemoglobin molecules which transport oxygen. 
E)  It saves energy by making more membrane relative to the volume of the cell. 
A)  It provides more membrane for the electron transport chains where oxygen is consumed. 
B)  It maximizes the relative surface area available to exchange gasses. 
C)  The cell's surface area to volume will decrease, making it easier for the cell to fit through arteries and veins. 
D)  It provides more sites for the membrane-bound hemoglobin molecules which transport oxygen. 
E)  It saves energy by making more membrane relative to the volume of the cell.

Question 8

Which are recycling centers for the cell?

Accepted Answer

A)  All of the answer choices are correct. 
B)  ribosome and Golgi apparatus 
C)  mitochondria and nucleus 
D)  central vacuole and lysosome 
E)  endoplasmic reticulum and chloroplast 
A)  All of the answer choices are correct. 
B)  ribosome and Golgi apparatus 
C)  mitochondria and nucleus 
D)  central vacuole and lysosome 
E)  endoplasmic reticulum and chloroplast

Question 9

Mitochondria and chloroplasts are the only plastid organelles,because of their DNA and ribosomes.

Accepted Answer

A) True 
 B)False

Question 10

Eukaryotic cells are 10-100 times the size of prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

Accepted Answer

A)  None of the biochemical reactions in prokaryotes occur in eukaryotes. 
B)  Gasses are taken up by active transport. 
C)  They have pumps that move gasses and nutrients through the cell. 
D)  Organelles keep reactions compartmentalized and concentrated. 
A)  None of the biochemical reactions in prokaryotes occur in eukaryotes. 
B)  Gasses are taken up by active transport. 
C)  They have pumps that move gasses and nutrients through the cell. 
D)  Organelles keep reactions compartmentalized and concentrated.

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

The original three tenets of the cell theory are

Accepted Answer

A)  all organisms have DNA, all organisms are made of cells, and all cells produce proteins. 
B)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells. 
C)  all organisms are made of one or more cells, all cells contain DNA, and all cells come from preexisting cells. 
D)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells have a nucleus. 
E)  all organisms have DNA, DNA is the fundamental unit of life, and all cells come from preexisting cells. 
A)  all organisms have DNA, all organisms are made of cells, and all cells produce proteins. 
B)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells. 
C)  all organisms are made of one or more cells, all cells contain DNA, and all cells come from preexisting cells. 
D)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells have a nucleus. 
E)  all organisms have DNA, DNA is the fundamental unit of life, and all cells come from preexisting cells.

Question 13

Cells come in a range of sizes, and a variety of shapes. Assuming a cell type has a conservative cube shape, it may have limits to size, because of the need of materials to diffuse into or out of the cell through the surface area of the cell membrane. Calculate the numerical changes of a cube-shaped cell from an original size of 10 μm × 10 μm × 10 μm.
-If the cell was a cube and you doubled the height,width,and length of the cell,how much would the volume increase?

Accepted Answer

A)  It would stay the same. 
B)  4-fold 
C)  9-fold 
D)  2-fold 
E)  8-fold 
A)  It would stay the same. 
B)  4-fold 
C)  9-fold 
D)  2-fold 
E)  8-fold

Question 14

How do sperm move to fertilize eggs?

Accepted Answer

A)  by diffusion 
B)  with cilia made of microtubules 
C)  with flagella made of actin 
D)  with cilia made of actin 
E)  with flagella made of microtubules 
A)  by diffusion 
B)  with cilia made of microtubules 
C)  with flagella made of actin 
D)  with cilia made of actin 
E)  with flagella made of microtubules

Question 15

A eukaryotic cell

Accepted Answer

A)  does not have membrane-bounded organelles. 
B)  has a cell wall with peptidoglycan. 
C)  is usually smaller than a prokaryotic cell. 
D)  has membrane-bounded organelles. 
E)  does not usually have a nucleus. 
A)  does not have membrane-bounded organelles. 
B)  has a cell wall with peptidoglycan. 
C)  is usually smaller than a prokaryotic cell. 
D)  has membrane-bounded organelles. 
E)  does not usually have a nucleus.

Question 16

A phospholipid molecule has

Accepted Answer

A)  hydrophilic tails that are repelled by water. 
B)  a hydrophobic head that is repelled by water. 
C)  hydrophobic tails that are attracted to water. 
D)  a hydrophilic head that is attracted to water. 
E)  a hydrophilic head that is repelled by water. 
A)  hydrophilic tails that are repelled by water. 
B)  a hydrophobic head that is repelled by water. 
C)  hydrophobic tails that are attracted to water. 
D)  a hydrophilic head that is attracted to water. 
E)  a hydrophilic head that is repelled by water.

Question 17

Which scientist(s)is (are)given credit for making the first record of microorganisms from observations with his (their)microscope?

Accepted Answer

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

Question 18

The scientist(s)given credit for formulating the "cell theory" is (are)

Accepted Answer

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

Question 19

Flagella move by way of dynein proteins that connect microtubules and force them to shift back and forth to bend or rotate the flagella.

Accepted Answer

A) True 
 B)False

Question 20

The cells shown here are all part of the Eukarya domain.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function

In order for a milk protein to be secreted in mammals,these events must happen in the correct organelle function sequence.

The primary structural molecule composing a cell membrane is a(n)

An understanding of cellular biology is helping us find new treatments for many diseases.

Penicillin halts bacterial infections

You are working on a forensics team and collect some cells from a crime scene.The cells are angular,rigid,and have a cell wall made up of cellulose.This sample most likely came from a(n)

A wild duck needs a steady supply of energy to be able to fly for hours.Domesticated chickens rarely fly.As a result you would expect to find _____ in the breast muscles of wild ducks than domesticated chickens.

What is the selective advantage of a mature red blood cell being flat rather than a sphere?

Which are recycling centers for the cell?

Mitochondria and chloroplasts are the only plastid organelles,because of their DNA and ribosomes.

Eukaryotic cells are 10-100 times the size of prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

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

The original three tenets of the cell theory are

How do sperm move to fertilize eggs?

A eukaryotic cell

A phospholipid molecule has

Which scientist(s)is (are)given credit for making the first record of microorganisms from observations with his (their)microscope?

The scientist(s)given credit for formulating the "cell theory" is (are)

Flagella move by way of dynein proteins that connect microtubules and force them to shift back and forth to bend or rotate the flagella.

The cells shown here are all part of the Eukarya domain.

The Scientific Study of Life

The Chemistry of Life

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication, mitosis, and the Cell Cycle

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

The Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

The Origin and History of Life

Viruses

Bacteria and Archaea

Protists

Plants

Fungi

Animals

Plant Form and Function

Plant Nutrition and Transport

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System

The Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory System

The Respiratory System

Digestion and Nutrition

Regulation of Temperature and Body Fluids

The Immune System

Animal Reproduction and Development

Animal Behavior

Population Ecology

Communities and Ecosystems

Biomes

Preserving Biodiversity

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