BIO 205 MICROBIOLOGY EXAM 2025
QUESTIONS AND ANSWERS GRADED A+ RIO
SALADO COLLEGE
Define Pathogenic.
disease producing
Types of microbes
1.Bacteria
2.Archea
3.Fungi
4.Protozoa
5.Algae
6.Viruses
7. Parasites
Bacteria
single celled, genetic material not enclose in membrane, some can complete
photosynthesis, some can swim using flagella
,Bacteria are enclose in:
Cell walls made of peptoglycan
Bacterial Cells are called?
Prokaryotes
Bacterial Cell Shapes (3)
1. Bacillus (rods)
2. Coccus (spherical)
3. Spiral
Prokaryotes include both:
Bacteria and archeas
Bacterial reproduction
Binary Fission: divide into two equal cells
,Archea
consist of prokaryotic cells, found in extreme environments, does not cause disease
in humans
Peptoglycan
a polymer consisting of sugars and amino acids that forms a mesh layer around the
plasma membrane
Is peptoglycan found in archea
no
3 main groups of archea
1. Methanogens: produce methane as a waste product from respiration
2. extreme halophiles: live in extremely salty environments
3. Extreme thermophiles: live in hot sulfurous water (hot springs)
Eukaryotes
have a distinct nucleus containing DNA surrounded by the nuclear membrane
, Fungi
eukaryotic, unicellular/multicellular, cell walls composed of chitin, can reproduce
sexually/asexually, feed on organic material from their environment
Unicellular form of fungi:
yeasts (oval microbes, larger than bacteria)
Most popular fungi
molds (form visible masses called mycelia)
Protozoa
unicellular, eukaryotic microbes, various shapes, live as free entities or as
parasites.
How do protozoa move and reproduce:
pseudopods, flagella, or cilia. Can reproduce asexually and sexually.
QUESTIONS AND ANSWERS GRADED A+ RIO
SALADO COLLEGE
Define Pathogenic.
disease producing
Types of microbes
1.Bacteria
2.Archea
3.Fungi
4.Protozoa
5.Algae
6.Viruses
7. Parasites
Bacteria
single celled, genetic material not enclose in membrane, some can complete
photosynthesis, some can swim using flagella
,Bacteria are enclose in:
Cell walls made of peptoglycan
Bacterial Cells are called?
Prokaryotes
Bacterial Cell Shapes (3)
1. Bacillus (rods)
2. Coccus (spherical)
3. Spiral
Prokaryotes include both:
Bacteria and archeas
Bacterial reproduction
Binary Fission: divide into two equal cells
,Archea
consist of prokaryotic cells, found in extreme environments, does not cause disease
in humans
Peptoglycan
a polymer consisting of sugars and amino acids that forms a mesh layer around the
plasma membrane
Is peptoglycan found in archea
no
3 main groups of archea
1. Methanogens: produce methane as a waste product from respiration
2. extreme halophiles: live in extremely salty environments
3. Extreme thermophiles: live in hot sulfurous water (hot springs)
Eukaryotes
have a distinct nucleus containing DNA surrounded by the nuclear membrane
, Fungi
eukaryotic, unicellular/multicellular, cell walls composed of chitin, can reproduce
sexually/asexually, feed on organic material from their environment
Unicellular form of fungi:
yeasts (oval microbes, larger than bacteria)
Most popular fungi
molds (form visible masses called mycelia)
Protozoa
unicellular, eukaryotic microbes, various shapes, live as free entities or as
parasites.
How do protozoa move and reproduce:
pseudopods, flagella, or cilia. Can reproduce asexually and sexually.
