MIP 300 Exam 1 CSU Questions and Correct
Answers
Question 1
What are 2 things discussed in class that target peptidoglycan to ward off bacteria?
Correct Answer
Penicillin & Lysozymes
Question 2
What is aspergillosis?
Correct Answer
an invasive disease in immunocompromised people with 50-100% mortality rate,
and in normal people it causes allergic sinusitis, allergic bronchitis, mild lung
infections, and asthma like symptoms
Question 3
What do amino acids form in peptidoglycan?
Correct Answer
tetrapeptides
Question 4
What bacteria causes TB?
Correct Answer
Mycobacterium tuberculosis
Page 1 of 119
,Question 5
How do the links between tetra peptides differ between gram negative and gram
positive bacteria?
Correct Answer
In gram negative bacteria, the tetra peptides are directly linked and in gram positive
bacteria, the tetra peptides are cross linked via peptide inter bridges
Question 6
What is a negative relationship between plants and fungi?
Correct Answer
fungi are the major causers of disease in plants
Question 7
What sized ribosomes do protein synthesis?
Correct Answer
only 80S ribosomes do protein synthesis
Question 8
How do fungi eat?
Correct Answer
they eat via absorptive nutrition because they have no chlorophyll and no
photosynthesis, and instead they make enzymes that can go out and break down
larger molecules and then these molecules are absorbed by the cell
Page 2 of 119
,Question 9
You have the opportunity to buy a new microscope. Which scope, all $2000, will be
the most powerful?
A. Resolving Power = 1 mm
B. Resolving Power = 4 um
C. Resolving Power = 1 um
D. Resolving Power = 0.4 um
E. Resolving Power = 0.4 mm
Correct Answer
D, because the smaller the resolving power the more powerful
Question 10
What structure is required for all living cells?
Correct Answer
cell membranes
Question 11
When performing a chemorepellant assay, why does the zone where bacteria have
moved away from the disc get larger as the concentration of toxin gets higher?
A. The higher the concentration of the toxin, the more bacteria die close to the disc,
so the bigger the zone
B. The higher the concentration of the toxin, the more toxic it is, so bacteria move
away faster
C. The higher the concentration of the toxin, the farther it will diffuse from the disc, so
the farther the bacterium must move to avoid it
Correct Answer
C
Page 3 of 119
, Question 12
You do a gram stain and realize you forgot to add grams iodine. What color will the
gram + cells be after staining?
A. Purple
B. Pink
C. Colorless
Correct Answer
B, because crystal violet will not get thick so it will easily wash out of gram + and
gram - cells no matter the peptidoglycan thickness, then safranin will turn them all
pink
Question 13
What is occurring in the exponential/log phase when calculating the microbial growth
curve?
Correct Answer
this is where bacterial cells divide as a fast as genetically possible
Question 14
What are 5 functions of cell membrane proteins?
Correct Answer
1. Nutrient and waste transport in and out of the cell
2. Transporting secreted proteins
3. Carrying out metabolic processes
4. Interacting with the environment
5. Motility
Question 15
Where do spores like to reside?
Correct Answer
in anaerobic conditions where there is no oxygen such as in deep wounds, and also
reside in the soil or dust
Page 4 of 119
Answers
Question 1
What are 2 things discussed in class that target peptidoglycan to ward off bacteria?
Correct Answer
Penicillin & Lysozymes
Question 2
What is aspergillosis?
Correct Answer
an invasive disease in immunocompromised people with 50-100% mortality rate,
and in normal people it causes allergic sinusitis, allergic bronchitis, mild lung
infections, and asthma like symptoms
Question 3
What do amino acids form in peptidoglycan?
Correct Answer
tetrapeptides
Question 4
What bacteria causes TB?
Correct Answer
Mycobacterium tuberculosis
Page 1 of 119
,Question 5
How do the links between tetra peptides differ between gram negative and gram
positive bacteria?
Correct Answer
In gram negative bacteria, the tetra peptides are directly linked and in gram positive
bacteria, the tetra peptides are cross linked via peptide inter bridges
Question 6
What is a negative relationship between plants and fungi?
Correct Answer
fungi are the major causers of disease in plants
Question 7
What sized ribosomes do protein synthesis?
Correct Answer
only 80S ribosomes do protein synthesis
Question 8
How do fungi eat?
Correct Answer
they eat via absorptive nutrition because they have no chlorophyll and no
photosynthesis, and instead they make enzymes that can go out and break down
larger molecules and then these molecules are absorbed by the cell
Page 2 of 119
,Question 9
You have the opportunity to buy a new microscope. Which scope, all $2000, will be
the most powerful?
A. Resolving Power = 1 mm
B. Resolving Power = 4 um
C. Resolving Power = 1 um
D. Resolving Power = 0.4 um
E. Resolving Power = 0.4 mm
Correct Answer
D, because the smaller the resolving power the more powerful
Question 10
What structure is required for all living cells?
Correct Answer
cell membranes
Question 11
When performing a chemorepellant assay, why does the zone where bacteria have
moved away from the disc get larger as the concentration of toxin gets higher?
A. The higher the concentration of the toxin, the more bacteria die close to the disc,
so the bigger the zone
B. The higher the concentration of the toxin, the more toxic it is, so bacteria move
away faster
C. The higher the concentration of the toxin, the farther it will diffuse from the disc, so
the farther the bacterium must move to avoid it
Correct Answer
C
Page 3 of 119
, Question 12
You do a gram stain and realize you forgot to add grams iodine. What color will the
gram + cells be after staining?
A. Purple
B. Pink
C. Colorless
Correct Answer
B, because crystal violet will not get thick so it will easily wash out of gram + and
gram - cells no matter the peptidoglycan thickness, then safranin will turn them all
pink
Question 13
What is occurring in the exponential/log phase when calculating the microbial growth
curve?
Correct Answer
this is where bacterial cells divide as a fast as genetically possible
Question 14
What are 5 functions of cell membrane proteins?
Correct Answer
1. Nutrient and waste transport in and out of the cell
2. Transporting secreted proteins
3. Carrying out metabolic processes
4. Interacting with the environment
5. Motility
Question 15
Where do spores like to reside?
Correct Answer
in anaerobic conditions where there is no oxygen such as in deep wounds, and also
reside in the soil or dust
Page 4 of 119
