TEST BANK-BECKER'S WORLD OF THE CELL
10TH EDITION BY JEFF HARDIN;JAMES
LODOLCE.
What is considered the smallest living unit?
Cell
What is the correct series of biochemical reactions that result in the production of proteins?
Replication, Transcription, Translation
What are proteins primarily made from?
Amino Acids.
What can mutations result in regarding offspring?
A mutation can generate offspring less fit for survival than their parents.
What can cause mutations in DNA?
Imperfect DNA duplication.
What are the fundamental units of life?
Cells.
What role do proteins play in a cell?
They are important architectural and catalytic components that determine the cell's chemistry, shape, and
ability to respond to changes.
What is the significance of the sequence of amino acids in proteins?
Different sequences create proteins with different conformations and surface chemistries, leading to
different functions.
What are the components of the cell's chemical makeup?
Chemical components include proteins, nucleic acids, carbohydrates, and lipids.
What is the focus of Chapter 1 in the Essential Cell Biology textbook?
Cells as the fundamental units of life.
What is the relationship between DNA and protein production?
DNA contains the instructions for the sequence of amino acids in proteins.
What is the importance of studying cell biology?
It helps understand the structure and function of cells, which are the basic units of life.
What is the role of organelles in a cell?
,Organelles perform specific functions necessary for cell survival and operation.
What is the significance of cell diversity?
Diversity in size, shape, environment, and behavior among living systems is crucial for adaptation and
survival.
What is the primary focus of the chapter on 'Cell Signaling'?
How cells communicate and respond to their environment.
What is the focus of the chapter on 'The Cell Cycle'?
The processes of cell division and replication.
What are 'Cell Communities'?
Tissues, stem cells, and cancer.
What is the importance of studying energy generation in mitochondria and chloroplasts?
It helps understand how cells obtain and utilize energy.
What is the focus of the chapter on 'Membrane Structure'?
The composition and function of cell membranes.
What is the role of intracellular compartments in a cell?
They facilitate the transport and processing of proteins and other molecules.
What is the significance of gene expression control?
It determines how genes are turned on or off, influencing cell function and behavior.
What is the focus of the chapter on 'How Genes and Genomes Evolve'?
The mechanisms and processes that drive genetic variation and evolution.
What can a mutation result from?
Imperfect DNA duplication or sexual reproduction.
What is a mutation?
A change in the DNA that can generate offspring that are as fit for survival as their parents.
What may changes in DNA sequence from one generation to the next result in?
Offspring that are altered in fitness compared with their parents.
What is the basis of evolution?
The process of change and selection over the course of many generations.
How can evolution be understood?
,As a process that can be understood based on the principles of mutation and selection.
What does a cell's genome contain?
All of a cell's DNA.
What is not true about the conclusions from studies during the mid-1800s regarding cells?
Scientists concluded that new cells can form spontaneously from the remnants of ruptured cells.
What unit of length is generally used to measure plant or animal cells?
Micrometers.
What limits the resolving power of a microscope?
The wavelength of light.
What do prokaryotic cells not possess?
A nucleus.
Which characteristic is not observed in prokaryotes?
Endoplasmic reticulum.
What are the three main characteristics that support the rapid evolution of prokaryotic populations?
Large population, rapid growth, can exchange DNA.
Which inorganic molecule is predicted to be the predominant building block for fats, sugars, and proteins?
CO2.
What is made up of two concentric membranes and is continuous with the membrane of the endoplasmic
reticulum?
Nuclear envelope.
What does the nucleus confine in eukaryotic cells?
Chromosomes.
Which organelle has both an outer and an inner membrane?
Mitochondrion.
What process do mitochondria perform?
Cellular respiration, which uses oxygen, generates carbon dioxide, and produces chemical energy for the
cell.
What is the correct pairing of material burned and the form of energy produced during cellular respiration?
Fat, ATP.
, What can be deduced from fertilizing egg cells with pollen treated with DNA-damaging agents that results in
defective chloroplasts?
Mitochondria contain their own genome and can be passed on to future generations.
Why can't mitochondria function for long when isolated from the cell?
Because they are endosymbionts.
What substance is consumed during the conversion of ADP to ATP in the mitochondrial inner membrane?
Oxygen.
True or False: The only organelles used by animal cells for cellular respiration are mitochondria, while plant
cells use both mitochondria and chloroplasts.
True.
True or False: The number of mitochondria inside a cell remains constant over the life of the cell.
False; the number can change based on the cell's energy needs.
Where is chlorophyll located in the chloroplast?
In the third, innermost membrane.
What high-energy molecules do plants produce during photosynthesis using carbon from CO2?
Sugar.
True or False: Membrane components in the cell are made in the endoplasmic reticulum.
True.
True or False: Lysosomes are small organelles where fatty acid synthesis occurs.
False; lysosomes are involved in the degradation and recycling of macromolecules.
What is the role of the lysosome?
Clean-up, recycling, and disposal of macromolecules.
Why are bacteria generally unable to feed on other cells by engulfing them?
Bacteria lack the cellular structures necessary for phagocytosis.
What process describes how external materials are captured inside vesicles and brought into the cell?
Endocytosis.
What process allows eukaryotic cells to release material from secretory vesicles to the extracellular space?
Exocytosis.
What is a common example of materials released by exocytosis?
Hormones.
10TH EDITION BY JEFF HARDIN;JAMES
LODOLCE.
What is considered the smallest living unit?
Cell
What is the correct series of biochemical reactions that result in the production of proteins?
Replication, Transcription, Translation
What are proteins primarily made from?
Amino Acids.
What can mutations result in regarding offspring?
A mutation can generate offspring less fit for survival than their parents.
What can cause mutations in DNA?
Imperfect DNA duplication.
What are the fundamental units of life?
Cells.
What role do proteins play in a cell?
They are important architectural and catalytic components that determine the cell's chemistry, shape, and
ability to respond to changes.
What is the significance of the sequence of amino acids in proteins?
Different sequences create proteins with different conformations and surface chemistries, leading to
different functions.
What are the components of the cell's chemical makeup?
Chemical components include proteins, nucleic acids, carbohydrates, and lipids.
What is the focus of Chapter 1 in the Essential Cell Biology textbook?
Cells as the fundamental units of life.
What is the relationship between DNA and protein production?
DNA contains the instructions for the sequence of amino acids in proteins.
What is the importance of studying cell biology?
It helps understand the structure and function of cells, which are the basic units of life.
What is the role of organelles in a cell?
,Organelles perform specific functions necessary for cell survival and operation.
What is the significance of cell diversity?
Diversity in size, shape, environment, and behavior among living systems is crucial for adaptation and
survival.
What is the primary focus of the chapter on 'Cell Signaling'?
How cells communicate and respond to their environment.
What is the focus of the chapter on 'The Cell Cycle'?
The processes of cell division and replication.
What are 'Cell Communities'?
Tissues, stem cells, and cancer.
What is the importance of studying energy generation in mitochondria and chloroplasts?
It helps understand how cells obtain and utilize energy.
What is the focus of the chapter on 'Membrane Structure'?
The composition and function of cell membranes.
What is the role of intracellular compartments in a cell?
They facilitate the transport and processing of proteins and other molecules.
What is the significance of gene expression control?
It determines how genes are turned on or off, influencing cell function and behavior.
What is the focus of the chapter on 'How Genes and Genomes Evolve'?
The mechanisms and processes that drive genetic variation and evolution.
What can a mutation result from?
Imperfect DNA duplication or sexual reproduction.
What is a mutation?
A change in the DNA that can generate offspring that are as fit for survival as their parents.
What may changes in DNA sequence from one generation to the next result in?
Offspring that are altered in fitness compared with their parents.
What is the basis of evolution?
The process of change and selection over the course of many generations.
How can evolution be understood?
,As a process that can be understood based on the principles of mutation and selection.
What does a cell's genome contain?
All of a cell's DNA.
What is not true about the conclusions from studies during the mid-1800s regarding cells?
Scientists concluded that new cells can form spontaneously from the remnants of ruptured cells.
What unit of length is generally used to measure plant or animal cells?
Micrometers.
What limits the resolving power of a microscope?
The wavelength of light.
What do prokaryotic cells not possess?
A nucleus.
Which characteristic is not observed in prokaryotes?
Endoplasmic reticulum.
What are the three main characteristics that support the rapid evolution of prokaryotic populations?
Large population, rapid growth, can exchange DNA.
Which inorganic molecule is predicted to be the predominant building block for fats, sugars, and proteins?
CO2.
What is made up of two concentric membranes and is continuous with the membrane of the endoplasmic
reticulum?
Nuclear envelope.
What does the nucleus confine in eukaryotic cells?
Chromosomes.
Which organelle has both an outer and an inner membrane?
Mitochondrion.
What process do mitochondria perform?
Cellular respiration, which uses oxygen, generates carbon dioxide, and produces chemical energy for the
cell.
What is the correct pairing of material burned and the form of energy produced during cellular respiration?
Fat, ATP.
, What can be deduced from fertilizing egg cells with pollen treated with DNA-damaging agents that results in
defective chloroplasts?
Mitochondria contain their own genome and can be passed on to future generations.
Why can't mitochondria function for long when isolated from the cell?
Because they are endosymbionts.
What substance is consumed during the conversion of ADP to ATP in the mitochondrial inner membrane?
Oxygen.
True or False: The only organelles used by animal cells for cellular respiration are mitochondria, while plant
cells use both mitochondria and chloroplasts.
True.
True or False: The number of mitochondria inside a cell remains constant over the life of the cell.
False; the number can change based on the cell's energy needs.
Where is chlorophyll located in the chloroplast?
In the third, innermost membrane.
What high-energy molecules do plants produce during photosynthesis using carbon from CO2?
Sugar.
True or False: Membrane components in the cell are made in the endoplasmic reticulum.
True.
True or False: Lysosomes are small organelles where fatty acid synthesis occurs.
False; lysosomes are involved in the degradation and recycling of macromolecules.
What is the role of the lysosome?
Clean-up, recycling, and disposal of macromolecules.
Why are bacteria generally unable to feed on other cells by engulfing them?
Bacteria lack the cellular structures necessary for phagocytosis.
What process describes how external materials are captured inside vesicles and brought into the cell?
Endocytosis.
What process allows eukaryotic cells to release material from secretory vesicles to the extracellular space?
Exocytosis.
What is a common example of materials released by exocytosis?
Hormones.
