Substances that are naturally produced by certain microorganisms that can inhibit or destroy other microorganisms are called
A. synthetic drugs.
B. semisynthetic drugs.
C. broad-spectrum drugs.
D. antibiotics.
E. narrow-spectrum drugs.
Answer: D
You might also like to view...
Explain the concept of semiconservative replication and how simultaneous copying of both strands of DNA is accomplished in prokaryotic cells
What will be an ideal response?
A self-regenerating action potential generally depends on opening of _______ channels.
Fill in the blank(s) with the appropriate word(s).
You perform an experiment by incubating a radiolabeled nucleotide into the medium of a culture of cells. The cells that take up the radiolabel would be expected to be in what phase of the cell cycle?
a. S phase b. G1 phase c. G2 phase d. M phase
Chemosynthetic producers obtain energy by the oxidation of ammonia, nitrites, and sulfides, using this energy to make organic compounds.
Answer the following statement true (T) or false (F)