History Bookmarks Window Help Up Da up Quiz: End of Week 3 Quiz: Chapters 4 and

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History Bookmarks Window Help Up Da up Quiz: End of Week 3 Quiz: Chapters 4 and 5 2 pts D | Question 5 Why are drugs targeting bacterial ribosomes a good choice? OBacterial ribosomes are sufficiently different from eukaryotic ribosomes O Eukaryotes don't have ribosomes, so the drugs can't accidentally hurt us OOnly pathogenic (disease-causing) bacteria have ribosomes O Ribosomes contain unique DNA that can be specifically targeted DQuestion 6 2 pts Eukaryotic flagella contain a structural core of O microtubules O actin DNA O Golgi apparatus

Explanation / Answer

5. a. Bacterial ribosomes are sufficiently differnt from eukaryotic ribosomes.

The recognition of the marked difference between prokaryotic and eukaryotic rRNA has led to the development of antibiotics that specifically target bacterial rRNA, reduce protein translation and thereby inhibit bacterial growth. Eukaryotic ribosomes have two unequal subunits, designated small subunit (40S) and large subunit (60S) according to their sedimentation coefficients. Whereas bacterial ribosomes consist of a 50S and a 30Ssubunit and are composed chemically of ribosomal RNAand proteins.

6. a. microtubules

A eukaryotic flagellum is a bundle of nine fused pairs of microtubule doublets surrounding two central single microtubules. The so-called "9 + 2" structure is characteristic of the core of the eukaryotic flagellum called an axoneme.

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