Although prokaryotic and eukaryotic ribosomes are similar cy

Although prokaryotic and eukaryotic ribosomes are similar, cytoplasmic eukaryotic ribosomes are larger and have more components. Prokaryotic ribosomes are affected by substances that do not affect eukaryotic ribosomes. These facts are important to microbiologists creating drugs to target bacterial pathogens. An example is seen in the use of erythromycin which inhibits protein synthesis by prokaryotic ribosomes but doesn’t affect cytoplasmic eukaryotic ribosomes. Erythromycin kills bacteria but does not affect humans or other animals. Which of the following would be expected and would support the endosymbiont hypothesis?

a. Mitochondria and chloroplasts will not have ribosomes.

b. Prokaryotic ribosomes and eukaryotic ribosomes will be more similar to each other than they are to the ribosomes in mitochondria or chloroplasts.

c. The ribosomes in chloroplasts will be sensitive to erythromycin.

d. Mitochondrial ribosomes will be larger than prokaryotic ribosomes.

Solution

answer is C erythromycin is macrolid which is bacteriostatic at low conecentrations and cidal at higher concentrations. it mainly kill bacteria by inhibiting protein syntheis.