Microbiology 2117 Exam Questions and Answers
100% Correct
What is emerging properties, exhibited by all living organisms?
The ability to pass on hereditary information to new generations of cells or organisms through
reproduction
How do eukaryotic microbes reproduce?
Through asexual reproduction, forming new cells while maintaining genetic consistency.
What role do microtubules and proteins play in eukaryotic cell division?
They interact with pairs of chromosomes in the cell nucleus to allow precise events of mitosis
and cytokinesis.
How do prokaryotic microbes divide?
Prokaryotic microbes divide without an elaborate division apparatus, using a simpler process.
What is binary fission?
A process of cell division in prokaryotic cells that includes cell growth, DNA replication, and
separation of chromosomes.
What occurs during the cell growth phase of binary fission?
Enzymes break bonds in peptidoglycan layers, allowing the cell to stretch and expand.
What must occur before cell division in binary fission?
DNA replication, ensuring all cells formed have a complete set of genetic information.
, What happens to the bacterial chromosome during DNA replication?
The bacterial chromosome is copied, resulting in two identical chromosomes in one cell.
How are chromosomes separated after DNA replication in prokaryotic cells?
The separation involves the cell's cytoskeleton and does not require a microtubular spindle
apparatus.
What is the final phase of binary fission?
Duplicated chromosomes attach to the cell wall, and the inward synthesis of peptidoglycan
creates a septum, splitting the cell in two.
What is a fission ring apparatus?
A structure organized by cytoskeletal proteins that coordinates the splitting of the cell during
binary fission.
What happens to the septum material between daughter cells after binary fission?
The septum material might dissolve at a slow rate, allowing pairs, chains, or clusters of cells to
form.
What is generation time in prokaryotic cells?
The amount of time it takes to complete one cell cycle, which can be very fast under ideal
conditions.
What is the significance of generation times in prokaryotic cells?
Fast generation times allow prokaryotic cells to grow exponentially under ideal conditions.
100% Correct
What is emerging properties, exhibited by all living organisms?
The ability to pass on hereditary information to new generations of cells or organisms through
reproduction
How do eukaryotic microbes reproduce?
Through asexual reproduction, forming new cells while maintaining genetic consistency.
What role do microtubules and proteins play in eukaryotic cell division?
They interact with pairs of chromosomes in the cell nucleus to allow precise events of mitosis
and cytokinesis.
How do prokaryotic microbes divide?
Prokaryotic microbes divide without an elaborate division apparatus, using a simpler process.
What is binary fission?
A process of cell division in prokaryotic cells that includes cell growth, DNA replication, and
separation of chromosomes.
What occurs during the cell growth phase of binary fission?
Enzymes break bonds in peptidoglycan layers, allowing the cell to stretch and expand.
What must occur before cell division in binary fission?
DNA replication, ensuring all cells formed have a complete set of genetic information.
, What happens to the bacterial chromosome during DNA replication?
The bacterial chromosome is copied, resulting in two identical chromosomes in one cell.
How are chromosomes separated after DNA replication in prokaryotic cells?
The separation involves the cell's cytoskeleton and does not require a microtubular spindle
apparatus.
What is the final phase of binary fission?
Duplicated chromosomes attach to the cell wall, and the inward synthesis of peptidoglycan
creates a septum, splitting the cell in two.
What is a fission ring apparatus?
A structure organized by cytoskeletal proteins that coordinates the splitting of the cell during
binary fission.
What happens to the septum material between daughter cells after binary fission?
The septum material might dissolve at a slow rate, allowing pairs, chains, or clusters of cells to
form.
What is generation time in prokaryotic cells?
The amount of time it takes to complete one cell cycle, which can be very fast under ideal
conditions.
What is the significance of generation times in prokaryotic cells?
Fast generation times allow prokaryotic cells to grow exponentially under ideal conditions.
