Prokaryotic cell walls consist of a network of polysaccharide molecules connected by cross-bridges of  

A.  other polysaccharides.
B.  lipids.
C.  peptides.
D.  ribosomes.
E.  chromosomal DNA.


C.  peptides.

Biology & Microbiology

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In summer, when plant roots are converting sugar to store as starch, the root is the sugar ________ and the leaves are the sugar ________

A) source; source B) sink; sink C) source; sink D) sink; source or sink E) sink; source

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The nucleolus organizer region (NOR) is responsible for production of what type of cell structure?

A) ribosome B) endoplasmic reticulum C) nucleolus D) mitochondria E) chromatids

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CPEs are:

A. cytoplasmic sequences for polyadenylation. B. nuclear polyadenylation sequences. C. cytoplasmic proteins that disrupt the interaction between eIF4E and eIF4G. D. None of the above is correct.

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A birth control implant is __________.

A birth control implant is __________. (Check all that are true) [A] inserted in the arm [B] about $10, and lasts up to three years [C] a matchstick-sized rod [D] able to prevent STDs.

Biology & Microbiology