BMSC 210- Quizzes with All Solved
Solutions.
The concept that living organisms arise from nonliving material is called _____________. -
Answer spontaneous generation
While each of these processes are believed to have evolved prior to aerobic respiration, which
one os the most critical process, without which aerobic respiration could have never
developed? - Answer Oxygenic photosynthesis
The ribosomal RNA studies that led to the division of prokaryotic organisms into the Bacteria
and the Archaea were begun by ________. - Answer Woese
Proteins function in modern cells as ________. - Answer both catalysts and structural
elements
Which of the following provides the best explanation for why viruses are not included in the
three domain system? - Answer Viruses are not a cellular life form.
Cells with a relatively complex morphology that have a true membrane-delimited nucleus are
called _______. - Answer Eukaryotes
Cells with a relatively simple cell morphology that do not have a true membrane-delimited
nucleus are called _______. - Answer prokaryotes
Old cultures of bacteria that have lost their ability to cause disease are said to be ________. -
Answer attenuated
The concept that human and animal diseases are caused by microorganisms is called the
________. - Answer germ theory
Antiseptic surgery was pioneered by _______. - Answer Lister
If the decolorizer is not left on long enough in the Gram-staining procedure, Gram-positive
organisms will be stained __________ and Gram-negative organisms will be stained
__________. - Answer purple; purple
,Atomic force microscopes use a scanning probe that maintains a fixed distance from the surface
of the specimen. It is useful for specimens that _________. - Answer do not conduct electricity
well
After the primary stain has been added but before the decolorizer has been used, Gram-positive
organisms are stained __________ and Gram-negative organisms are stained __________. -
Answer purple; purple
After the decolorizer has been added, Gram-positive organisms are stained __________ and
Gram-negative organisms are stained __________. - Answer purple; colorless
Which type of microscopy would be preferred for showing fine internal detail of the eukaryotic
organelles? - Answer transmission electron microscopy
If immersion oil was replaced with water, what would happen? - Answer The refractive index
of water would be greater than air but less than oil, improving resolution less than oil.
Confocal microscopes exhibit improved contrast and resolution by ________. - Answer
blocking out stray light with an aperture located above the objective lens
The instrument that produces a bright image of the specimen against a dark background is
called a (n) __________ microscope. - Answer dark field
As the resolution of a microscope system improves, the size of the smallest object that can be
seen clearly _________. - Answer is smaller
After the mordant has been added, Gram-positive organisms are stained __________ and
Gram-negative organisms are stained __________. - Answer purple; purple
Which of the following statements is false regarding why some scientists believe that the term
"prokaryote" is a somewhat artificial designation? - Answer Some bacteria have 80S
ribosomes
A pathogenic bacterial species has mutated and is no longer able to synthesize a capsule. Which
outcome would you predict? - Answer The mutated bacteria will not be able to cause disease
as readily.
You discover a new transport system used by a newly discovered bacterial species. The sugars
that are transported using this system are phosphorylated as they enter the bacterial cell.You
would describe this transport system as a(n) ___________. - Answer group translocation
, Nutrients can be concentrated from dilute solutions by _________. - Answer active transport
and group translocation
Discovery of the bacterial cytoskeletal protein FtsZ provided an important link in the evolution
of cells since __________. - Answer it was also discovered in mitochondria and chloroplasts
The lipopolysaccharide (LPS) that is found in the outer membrane of Gram-negative bacteria is
also known as _________. - Answer endotoxin
How do spheroplasts and protoplasts differ? - Answer There is no difference; these terms are
synonyms.
Select the correct statement about archaeal ribosomes. - Answer The chemical components of
archaean ribosomes are more similar to those of eukaryotic ribosomes than to those of
bacterial ribosomes.
Which cellular shape is seen among members of domain Bacteria that is not found among the
domain Archaea? - Answer Spiral or corkscrew shapes
Archaeal membranes contain which of the following lipids? - Answer phospholipids,
sulfolipids, glycolipids
Archaea often live in nutrient-poor environments. In order to ensure survival, they must
__________. - Answer accumulate nutrients inside the cell at higher concentrations than the
external environment, which requires active transport mechanisms
A newly discovered microorganism has a circular chromosome that is complexed with histones,
but not enclosed within a membrane. The plasma membrane lipids include glycerol dietethers
and diglycerol tetraethers. There are no mitochondria or chloroplasts, but the cells do contain
70s ribosomes. This microbe most likely is _________. - Answer an archaeon
The plasma membrane of eukaryotes contains all of the following except _________. - Answer
peptidoglycan
Which of the following is a function of the mitochondrion? - Answer ATP synthesis, Electron
Transport, Tricarboxylic acid cycle enzyme reactions.
Where is the glycolysis pathway located in a cell? - Answer cytoplasm
Solutions.
The concept that living organisms arise from nonliving material is called _____________. -
Answer spontaneous generation
While each of these processes are believed to have evolved prior to aerobic respiration, which
one os the most critical process, without which aerobic respiration could have never
developed? - Answer Oxygenic photosynthesis
The ribosomal RNA studies that led to the division of prokaryotic organisms into the Bacteria
and the Archaea were begun by ________. - Answer Woese
Proteins function in modern cells as ________. - Answer both catalysts and structural
elements
Which of the following provides the best explanation for why viruses are not included in the
three domain system? - Answer Viruses are not a cellular life form.
Cells with a relatively complex morphology that have a true membrane-delimited nucleus are
called _______. - Answer Eukaryotes
Cells with a relatively simple cell morphology that do not have a true membrane-delimited
nucleus are called _______. - Answer prokaryotes
Old cultures of bacteria that have lost their ability to cause disease are said to be ________. -
Answer attenuated
The concept that human and animal diseases are caused by microorganisms is called the
________. - Answer germ theory
Antiseptic surgery was pioneered by _______. - Answer Lister
If the decolorizer is not left on long enough in the Gram-staining procedure, Gram-positive
organisms will be stained __________ and Gram-negative organisms will be stained
__________. - Answer purple; purple
,Atomic force microscopes use a scanning probe that maintains a fixed distance from the surface
of the specimen. It is useful for specimens that _________. - Answer do not conduct electricity
well
After the primary stain has been added but before the decolorizer has been used, Gram-positive
organisms are stained __________ and Gram-negative organisms are stained __________. -
Answer purple; purple
After the decolorizer has been added, Gram-positive organisms are stained __________ and
Gram-negative organisms are stained __________. - Answer purple; colorless
Which type of microscopy would be preferred for showing fine internal detail of the eukaryotic
organelles? - Answer transmission electron microscopy
If immersion oil was replaced with water, what would happen? - Answer The refractive index
of water would be greater than air but less than oil, improving resolution less than oil.
Confocal microscopes exhibit improved contrast and resolution by ________. - Answer
blocking out stray light with an aperture located above the objective lens
The instrument that produces a bright image of the specimen against a dark background is
called a (n) __________ microscope. - Answer dark field
As the resolution of a microscope system improves, the size of the smallest object that can be
seen clearly _________. - Answer is smaller
After the mordant has been added, Gram-positive organisms are stained __________ and
Gram-negative organisms are stained __________. - Answer purple; purple
Which of the following statements is false regarding why some scientists believe that the term
"prokaryote" is a somewhat artificial designation? - Answer Some bacteria have 80S
ribosomes
A pathogenic bacterial species has mutated and is no longer able to synthesize a capsule. Which
outcome would you predict? - Answer The mutated bacteria will not be able to cause disease
as readily.
You discover a new transport system used by a newly discovered bacterial species. The sugars
that are transported using this system are phosphorylated as they enter the bacterial cell.You
would describe this transport system as a(n) ___________. - Answer group translocation
, Nutrients can be concentrated from dilute solutions by _________. - Answer active transport
and group translocation
Discovery of the bacterial cytoskeletal protein FtsZ provided an important link in the evolution
of cells since __________. - Answer it was also discovered in mitochondria and chloroplasts
The lipopolysaccharide (LPS) that is found in the outer membrane of Gram-negative bacteria is
also known as _________. - Answer endotoxin
How do spheroplasts and protoplasts differ? - Answer There is no difference; these terms are
synonyms.
Select the correct statement about archaeal ribosomes. - Answer The chemical components of
archaean ribosomes are more similar to those of eukaryotic ribosomes than to those of
bacterial ribosomes.
Which cellular shape is seen among members of domain Bacteria that is not found among the
domain Archaea? - Answer Spiral or corkscrew shapes
Archaeal membranes contain which of the following lipids? - Answer phospholipids,
sulfolipids, glycolipids
Archaea often live in nutrient-poor environments. In order to ensure survival, they must
__________. - Answer accumulate nutrients inside the cell at higher concentrations than the
external environment, which requires active transport mechanisms
A newly discovered microorganism has a circular chromosome that is complexed with histones,
but not enclosed within a membrane. The plasma membrane lipids include glycerol dietethers
and diglycerol tetraethers. There are no mitochondria or chloroplasts, but the cells do contain
70s ribosomes. This microbe most likely is _________. - Answer an archaeon
The plasma membrane of eukaryotes contains all of the following except _________. - Answer
peptidoglycan
Which of the following is a function of the mitochondrion? - Answer ATP synthesis, Electron
Transport, Tricarboxylic acid cycle enzyme reactions.
Where is the glycolysis pathway located in a cell? - Answer cytoplasm
