MICROBIOLOGY MIDTERM WITH
RATIONALIZED ANSWERS YEAR 2024/2025
In Gram staining, ethanol-acetone is used as a - verified
answers-decolorizing agent
Enveloped viruses compared with naked virus is surrounded by
a membrane made with -------- - verified answers-phospholipid
bilayer
Which of the following bacteria does belong to Epsilon-
proteobacteria? - verified answers-Helicobacter pylari
The Archaean known as halaphiles------- - verified answers-are
members of the Euryarchaeota and require salt concentration
above 9%
Which of the following is found in RNA but not DNA? - verified
answers-uracil
In what ways do viruses differ from other pathogens? - verified
answers-Viruses lack cytoplasm and organelles
Tertiary and quaternary structure of protiens involves-----bonds.
- verified answers-ionic, hydrogen, polar, and nonpolar covalent
When a scientist tries to make a human protein in a bacterial
cell using DNA recombinant technology, bacterial cells
transformed with a recombinant plasmid frequently remove the
gene products in-------- - verified answers-inclusion body
Minusss-RNA virus once infected the host, -ssRNA molecule
should be changed to +ssRNA molecule for replication. This
can be done by enzyme----- - verified answers-viral RNA-
dependent RNA polymerase
, Which of the following is bacteriostatic? - verified answers-
FREEZING BELOW 0 CELCIUS
Endospores - verified answers-may be produced when
nutrients are scarce.
Which of the following is NOT a characteristic of phospholipids?
- verified answers-they contain fatty acids that associate with
water
What is the causing agent of Malaria? - verified answers-
Plasmodium
Which of the following is part of the structure of the
mitochondria of a eukaryotic cell? - verified answers-cristae
Although glycosis requires an input of ATP, this pathway results
in a net gain of two ATP; therefore it is a(n)----pathway. -
verified answers-exergonic
The bacterial ----maintains the DNA in a specific location and
facilitates the process of bacterial cell division. - verified
answers-cytoskeleton
Which of the following characteristics distinguish the archaea
from the bacteria? - verified answers-cell wall composition,
cytoplasmic membrane lipids, and rRNA sequences
What is an example of Archaea - verified answers-
methanogens
Which of the following is not the difference between bacteria
and archaea? - verified answers-bacteria and archaea are
made up of phospholipid bilayer.
RATIONALIZED ANSWERS YEAR 2024/2025
In Gram staining, ethanol-acetone is used as a - verified
answers-decolorizing agent
Enveloped viruses compared with naked virus is surrounded by
a membrane made with -------- - verified answers-phospholipid
bilayer
Which of the following bacteria does belong to Epsilon-
proteobacteria? - verified answers-Helicobacter pylari
The Archaean known as halaphiles------- - verified answers-are
members of the Euryarchaeota and require salt concentration
above 9%
Which of the following is found in RNA but not DNA? - verified
answers-uracil
In what ways do viruses differ from other pathogens? - verified
answers-Viruses lack cytoplasm and organelles
Tertiary and quaternary structure of protiens involves-----bonds.
- verified answers-ionic, hydrogen, polar, and nonpolar covalent
When a scientist tries to make a human protein in a bacterial
cell using DNA recombinant technology, bacterial cells
transformed with a recombinant plasmid frequently remove the
gene products in-------- - verified answers-inclusion body
Minusss-RNA virus once infected the host, -ssRNA molecule
should be changed to +ssRNA molecule for replication. This
can be done by enzyme----- - verified answers-viral RNA-
dependent RNA polymerase
, Which of the following is bacteriostatic? - verified answers-
FREEZING BELOW 0 CELCIUS
Endospores - verified answers-may be produced when
nutrients are scarce.
Which of the following is NOT a characteristic of phospholipids?
- verified answers-they contain fatty acids that associate with
water
What is the causing agent of Malaria? - verified answers-
Plasmodium
Which of the following is part of the structure of the
mitochondria of a eukaryotic cell? - verified answers-cristae
Although glycosis requires an input of ATP, this pathway results
in a net gain of two ATP; therefore it is a(n)----pathway. -
verified answers-exergonic
The bacterial ----maintains the DNA in a specific location and
facilitates the process of bacterial cell division. - verified
answers-cytoskeleton
Which of the following characteristics distinguish the archaea
from the bacteria? - verified answers-cell wall composition,
cytoplasmic membrane lipids, and rRNA sequences
What is an example of Archaea - verified answers-
methanogens
Which of the following is not the difference between bacteria
and archaea? - verified answers-bacteria and archaea are
made up of phospholipid bilayer.
