MIC205A – Microbiology – Exam 3 Questions and Answers
Arrange the following steps of viral infection in the correct order 1. Entry
2. Uncoating of the capsid
3. Biosynthesis of proteins and nucleic acids
4. Virion assembly
5. Release
Influenza viruses bud from the host cell. Based on this information, the viruses most likely
Are enveloped
Are all fungi detrimental (bad) for other organisms? No-fungi are sometimes good,
sometimes bad for other organisms. It really depends on which fungus you're talking about and
the relationship it has with the other organism. Some fungi, for example, can form a symbiotic
relationship with plant roots that increases their nutrient and water absorption. This is good.
All of the following fungal spores are produced sexually except (Check all that apply) -
Arthrospores
-Chlamydospores
Fever (Check all that apply) -Inhibits bacterial growth
-Speeds up the body's reactions
T cells and B cells develop from stem cells in red bone marrow, but T cells mature in the
_______ while B cells mature in the _______. Thymus, bone marrow
Several inherited deficiencies in the complement system occur in humans. Which of the
following would be the MOST severe? Deficiency of C3
, Place the statements about B-cell activation in the correct order 1. B cell receptors bind to
antigens
2. Antigens are internalized and digested into peptide fragments
3. Peptide fragments are displayed on MHC class II molecules
4. T helper cells recognize antigen-MHC complexes
5. T helper cells deliver cytokines to naive B cells
6. Activated B cells proliferate and differentiate into plasma cells and memory cells
Which of the following is NOT a characteristic of B cells? They recognize antigens associated
with MHC I
Members of this group of microbes can break down glycogen deposited in the vaginal lining in
response to estrogen. This helps to drop the pH in the area, preventing infections Lactic acid
bacteria
Valley fever is -Caused by Coccidioides sp
-A fungal disease
The Gram-negative bacterium that can break down urea and causes stomach ulcer is
Helicobacter pylori
Members of the family Enterobacteriaceae -Are facultative anaerobes
-Include E. coli, Enterobacter, Salmonella, and Shigella
-Often reside in the intestinal tract of humans and animals
Arrange the following steps of viral infection in the correct order 1. Entry
2. Uncoating of the capsid
3. Biosynthesis of proteins and nucleic acids
4. Virion assembly
5. Release
Influenza viruses bud from the host cell. Based on this information, the viruses most likely
Are enveloped
Are all fungi detrimental (bad) for other organisms? No-fungi are sometimes good,
sometimes bad for other organisms. It really depends on which fungus you're talking about and
the relationship it has with the other organism. Some fungi, for example, can form a symbiotic
relationship with plant roots that increases their nutrient and water absorption. This is good.
All of the following fungal spores are produced sexually except (Check all that apply) -
Arthrospores
-Chlamydospores
Fever (Check all that apply) -Inhibits bacterial growth
-Speeds up the body's reactions
T cells and B cells develop from stem cells in red bone marrow, but T cells mature in the
_______ while B cells mature in the _______. Thymus, bone marrow
Several inherited deficiencies in the complement system occur in humans. Which of the
following would be the MOST severe? Deficiency of C3
, Place the statements about B-cell activation in the correct order 1. B cell receptors bind to
antigens
2. Antigens are internalized and digested into peptide fragments
3. Peptide fragments are displayed on MHC class II molecules
4. T helper cells recognize antigen-MHC complexes
5. T helper cells deliver cytokines to naive B cells
6. Activated B cells proliferate and differentiate into plasma cells and memory cells
Which of the following is NOT a characteristic of B cells? They recognize antigens associated
with MHC I
Members of this group of microbes can break down glycogen deposited in the vaginal lining in
response to estrogen. This helps to drop the pH in the area, preventing infections Lactic acid
bacteria
Valley fever is -Caused by Coccidioides sp
-A fungal disease
The Gram-negative bacterium that can break down urea and causes stomach ulcer is
Helicobacter pylori
Members of the family Enterobacteriaceae -Are facultative anaerobes
-Include E. coli, Enterobacter, Salmonella, and Shigella
-Often reside in the intestinal tract of humans and animals
