Substances that are naturally produced by certain microorganisms that can inhibi
ID: 206086 • Letter: S
Question
Substances that are naturally produced by certain microorganisms that can inhibit or destroy other microorganisms are called O antibiotics O narrow-spectrum drugs. O semisynthetic drugs O synthetic drugs O broad-spectrum drugs QUESTION 27 Which of the following describes the mechanism of action for AZT? It is a thymine analog that interferes with DNA synthesis It directly binds to reverse transcriptase and prevents reverse transcription of HIV RNA It inhibits the assembly of HIV particles. It inhibits fusion of the viral envelope and host cell envelope. O It prevents the viral DNA from integrating in the host chromosome QUESTION 28 The most versatile and useful antifungal drug that is used to treat serious systemic fungal infections is O nystatin. O amphotericin B O sulfa drugs O metronidazole.Explanation / Answer
1. option first is correct
Microorganisms produces antibiotics for protection against other microorganisms. for our medicinal purposes we isolate these antibiotics from bacteria or microorganisms and used for our benefit.
microorganisms mainly bacteria produce antibiotics. these are natural biological compounds.
all the other options are drugs which are chemically synthesized.
2. it is the enzyme which directly binds with the reverse transcriptase enzyme and enables the reverse transcription process of the HIV virus.
these viruses replicates there are any by the conversion of there are any into DNA with the help of enzyme reverse transcriptase. this medicine directly binds with the reverse transcriptase enzyme and inhibits the activity of this enzyme so that it is not able to produce DNA from RNA.
option B is correct
3. option A is correct
nystatin is used for most of the fungal disease in oral parts of the body.
griseofulvin is used for ring worms and skin associated disease.
option first is correct.