The modern antibiotic revolution began with the discovery of which antibiotic?

sulfanamide
quinoline
tetracycline
penicillin
acyclovir

Hopanoids found in sedimentary rock are an example of a

biosignature.
microfossil.
stromatolite.
banded iron formation.
prebiotic metabolite.

Which of the following is an opportunistic mycosis?

blastomycosis
histoplasmosis
candidiasis
paracoccidioidomycosis
coccidioidomycosis

Which of the following can only be used as a topical antibiotic?

streptogramin A
vancomycin
gramicidin
amphotericin B
chloramphenicol

Which of the following does not represent evidence of an RNA world?

riboswitches
NADH
RNA viruses
repressors
ribozymes

The modern antibiotic revolution began with the discovery of penicillin. To find the answer to this question, you would need to have knowledge about the history of antibiotics. Penicillin was discovered by Alexander Fleming in 1928.

Hopanoids found in sedimentary rock are an example of a biosignature. To answer this question, you would need knowledge about hopanoids and their association with sedimentary rocks. Hopanoids are molecules produced by certain bacteria and are commonly found in sedimentary rocks as fossilized remnants.

Candidiasis is an example of an opportunistic mycosis. To answer this question, you would need knowledge about different types of fungal infections. Candidiasis is caused by the Candida species of fungi and typically occurs in individuals with weakened immune systems.

Gramicidin can only be used as a topical antibiotic. To answer this question, you would need knowledge about the uses of different antibiotics. Gramicidin is a polypeptide antibiotic that is primarily used as a topical treatment for skin infections.

NADH does not represent evidence of an RNA world. To answer this question, you would need knowledge about the RNA world hypothesis and evidence supporting it. NADH is a coenzyme involved in cellular metabolism and does not directly relate to the existence of an RNA world. Evidence such as riboswitches, RNA viruses, repressors, and ribozymes are more closely associated with the RNA world hypothesis.