What were Fleming's initial observations about organisms on a Petri dish that led him to discover penicillin?
A) A zone of clearing formed around bacterial colonies.
B) Bacterial mycelium inhibited mold growth.
C) Fungal colonies grew around bacterial colonies.
D) Bacteria inhibited the growth of mold.
E) A mold inhibited the growth of bacterial colonies.
Correct Answer:
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Q83: Penicillin was isolated from _ growing on
Q84: Evidence in support of the endosymbiosis hypothesis
Q85: Bacterial cell walls are made rigid by
Q86: Peptidoglycan is made of
A) lipids.
B) sugars.
C) amino
Q87: All of the following are true of
Q89: Both animal and plant cells contain these
Q90: Penicillin is
A) a chemical that kills bacteria.
B)
Q91: Penicillin kills bacteria by disrupting their
A) cell
Q92: Where are proteins produced in prokaryotic cells?
A)
Q93: Gram-positive bacteria grown in the presence of
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