MDS PREP
What is the recommended storage condition for both recombinant and plasma-derived hepatitis B vaccines?
1) At room temperature
2) In a refrigerator
3) In a freezer
4) At 4°C to 8°C
General Microbiology Answer: 4
oth recombinant and plasma-derived hepatitis B vaccines should be stored at temperatures between 4°C and 8°C to maintain their efficacy and stability. Proper storage is crucial to ensure the vaccines remain effective when administered.
What type of differentiation is associated with a diphtheria bacilli that ferments glycogen and starch?
1) Gravis
2) Intermedius
3) Mitis
4) Avirulent
Diphtheria bacilli that ferment glycogen and starch are classified as Mitis.
What is the primary mechanism of action of the PCR test in diagnosing HIV infection?
1) Amplification of viral RNA or DNA
2) Detection of specific antibodies to HIV
3) Detection of the HIV virus directly
4) Measurement of the immune response to the virus
General Microbiology Answer: 1
The primary mechanism of action of the PCR test in diagnosing HIV infection is the amplification of viral RNA or DNA, allowing for the detection of the virus.
On a medium containing 6% agar, 5% Fildes peptic digest of sheep blood, and 20% human serum, which of the following is NOT a typical characteristic of C1. Perfringens colonies?
1) They will be surrounded by a zone of opacity on the half without antitoxin due to the Nagler reaction
2) They are nonmotile
3) They are capsulated
4) They ferment lactose and produce bright pink colonies on MacConkey’s medium
General Microbiology Answer: 2
C1. Perfringens colonies are typically nonmotile and do not form capsules. They will be surrounded by a zone of opacity on the half without antitoxin due to the Nagler reaction (option 1) and will not ferment lactose to produce bright pink colonies on MacConkey’s medium
The bacteria having the highest lipid Content in the cell wall
1 Staphylococcus aureus
2 Escherichia coli
3 Mycobacterium tuberculosis
4 Leptotrichia buccali
Microbiology
Answer: 3
The bacteria having the highest lipid Content in the cell wall Mycobacterium tuberculosis
Which of the following statements about the fermentation of sugars by Anthracoid bacilli is true?
1) Anthracoid bacilli ferment glucose, maltose, lactose, and sucrose, producing acid and gas.
2). Anthracoid bacilli do not ferment glucose but ferment maltose, lactose, and sucrose.
3) Anthracoid bacilli only ferment glucose.
4) Anthracoid bacilli ferment glucose, maltose, and lactose, but not sucrose.
General Microbiology Answer: 1
Anthracoid bacilli, such as those in the genus Bacillus, are capable of fermenting various sugars, including glucose, maltose, lactose, and sucrose. This fermentation process results in the production of acid and gas, which can be detected by observing changes in the pH of the medium and the formation of gas bubbles. This statement is true as it accurately describes the typical sugar fermentation profile of these bacteria.
What is the primary clinical significance of a deficiency in C5 to C8 components of the complement system?
1) Hereditary angioneurotic edema
2) Recurrent pyogenic infections
3) Systemic lupus erythematosus
4) Neisserial infections
Recurrent pyogenic infections are associated with a deficiency in C5 to C8 components of the complement system.
The minimum and maximum temperature for normal metabolic
activity microorganisms that live on or within the human body is
1 50 C
to 300 C
2 200 C to 450
C
3. 300 C to 400
C
4. 15 C to 600
C
Microbiology Answer: 2
The minimum and maximum temperature for normal metabolic activity microorganisms that live on or within the human body is 20° C to 45°C