Question

Some antibiotics can harm the ribosomes in animal cells. Which of the following would you predict to be the most likely long-term effect of damage to ribosomes?

Substances would not be able to enter or leave the cell, and affected cells would eventually burst.

Proteins would not be modified after being synthesized, and would be unable to function properly.

Cells would die because they would not be able to create the proteins needed to carry out life functions.

Errors would be made during DNA replication, and cells would then be unable to grow and divide

Answer 1

Assuming Antibiotics impairs the ribosomes function, This one makes the most sense according to me. But i took the liberty to post one of those Protein synthesis inhibitor widespectrum antibiotics which is mentioned in the question. examine "Mechanism of action" perhaps you'd draw a diffrent conclussion.

Cells would die because they would not be able to create the proteins needed to carry out life functions.

Source: http://en.wikipedia.org/wiki/Streptomycin

Answer 2

The mekanism of action above could be incorrect.

You should find all the information you'd need here.
http://www.ncbi.nlm.nih.gov/books/NBK22531/

"Streptomycin, a highly basic trisaccharide, interferes with the binding of formylmethionyl-tRNA to ribosomes and thereby prevents the correct initiation of protein synthesis. Other aminoglycoside antibiotics such as neomycin, kanamycin, and gentamycin interfere with the decoding site located near nucleotide 1492 in 16S rRNA of the 30S subunit (Section 29.3.9). Chloramphenicol acts by inhibiting peptidyl transferase activity. Erythromycin binds to the 50S subunit and blocks translocation. Finally, cyclohexamide blocks peptidyl transferase activity in eukaryotic ribosomes, making a useful laboratory tool for blocking protein synthesis in eukaryotic cells."