age 1 of 35
IRSC MICROBIOLOGY 2010 EXAM 1 2025/2026
COMPLETE QUESTIONS WITH CORRECT DETAILED
ANSWERS || 100% GUARANTEED PASS <BRAND
NEW VERSION>
bonding behavior .......Answer.........Water owes these unique
properties to the polarity of its molecules and, specifically, to
their ability to form hydrogen bonds with each other and with
other molecules.
Four major polysaccharides .......Answer.........Four
polysaccharides are starch, glycogen, cellulose and chitin.
The function of starch and glycogen are to store energy with
cells within a body. Cellulose and chitin are designed to protect
cells
,age 2 of 35
Cell to cell junctions .......Answer.........1[Plasmodesmata: places
where a hole is punched in the cell wall to allow direct
cytoplasmic exchange between two cells.]
Gap junctions:a lot like plasmodesmata in plant cells: they are
channels between neighboring cells that allow for the transport
of ions, water, and other substances^3 (diffrent stuctures)
Tight junctions:create a watertight seal between two adjacent
animal cells.
Desmosomes:which act like spot welds between adjacent
epithelial cells.
The story of the evolution of the genus equus(horses)
.......Answer.........the ancient species resembled the modern horse
(Equus ferus) but the size varies to the size it is today. It is shown
,age 3 of 35
by the fossil hominids and how the shape of the skulls has
changed over time.
Pinocytosis .......Answer.........endocytosis of a liquid
Requirements for natural selection .......Answer.........individual
variation, variation must affect reproductive success, variation
must have a genetic basis
Genetic drift .......Answer.........random fluctuations in allele
frequencies over time due to chance
Scientific theory .......Answer.........a well established concept
backed up by tests
Differences between passive transport and active transport
.......Answer.........passive: "just happens" due to a concentration
gradient active: requires ATP
, age 4 of 35
polymer .......Answer.........long molecules built by linking
monomers
monomer .......Answer.........small, similar subunits to polymers
polymers and their monomers .......Answer.........carbohydrates-
monosaccharides
nucleic acid-nucleotide
protein-amino acids
Is a lipid a polymer? .......Answer.........no
M 1 vs M 2 .......Answer.........M1 creates two cells M2 creates
four cells, M1 has synapsis and crossing over and M2 doesn't
M1 separates homologous chromosomes M2 separates sister
chromatids
IRSC MICROBIOLOGY 2010 EXAM 1 2025/2026
COMPLETE QUESTIONS WITH CORRECT DETAILED
ANSWERS || 100% GUARANTEED PASS <BRAND
NEW VERSION>
bonding behavior .......Answer.........Water owes these unique
properties to the polarity of its molecules and, specifically, to
their ability to form hydrogen bonds with each other and with
other molecules.
Four major polysaccharides .......Answer.........Four
polysaccharides are starch, glycogen, cellulose and chitin.
The function of starch and glycogen are to store energy with
cells within a body. Cellulose and chitin are designed to protect
cells
,age 2 of 35
Cell to cell junctions .......Answer.........1[Plasmodesmata: places
where a hole is punched in the cell wall to allow direct
cytoplasmic exchange between two cells.]
Gap junctions:a lot like plasmodesmata in plant cells: they are
channels between neighboring cells that allow for the transport
of ions, water, and other substances^3 (diffrent stuctures)
Tight junctions:create a watertight seal between two adjacent
animal cells.
Desmosomes:which act like spot welds between adjacent
epithelial cells.
The story of the evolution of the genus equus(horses)
.......Answer.........the ancient species resembled the modern horse
(Equus ferus) but the size varies to the size it is today. It is shown
,age 3 of 35
by the fossil hominids and how the shape of the skulls has
changed over time.
Pinocytosis .......Answer.........endocytosis of a liquid
Requirements for natural selection .......Answer.........individual
variation, variation must affect reproductive success, variation
must have a genetic basis
Genetic drift .......Answer.........random fluctuations in allele
frequencies over time due to chance
Scientific theory .......Answer.........a well established concept
backed up by tests
Differences between passive transport and active transport
.......Answer.........passive: "just happens" due to a concentration
gradient active: requires ATP
, age 4 of 35
polymer .......Answer.........long molecules built by linking
monomers
monomer .......Answer.........small, similar subunits to polymers
polymers and their monomers .......Answer.........carbohydrates-
monosaccharides
nucleic acid-nucleotide
protein-amino acids
Is a lipid a polymer? .......Answer.........no
M 1 vs M 2 .......Answer.........M1 creates two cells M2 creates
four cells, M1 has synapsis and crossing over and M2 doesn't
M1 separates homologous chromosomes M2 separates sister
chromatids
