Which of the following is a reversible post-translational covalent modification?
_____ Phosphorylation
_____ Acetylation
_____ Disulfide bond formation
_____ Proteolytic processing
_____ Attachment of a sugar
__X__ Phosphorylation
__X__ Acetylation
_____ Disulfide bond formation
_____ Proteolytic processing
_____ Attachment of a sugar
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What is the function of the protein S1 in translation?
a. It assists release factors. b. It hydrolyzes GTP. c. It assists in ribosomal translocation. d. It keeps the mRNA single-stranded and suitable for translation. e. It mediates the regeneration of EF-Tu.
If a woman is infected with Zika virus during pregnancy, her baby may be infected by the (parenteral/placental/mucous membrane) route.
Fill in the blank(s) with the appropriate word(s).
Cyanobacteria play a tremendous ecological role. Among other things, they are responsible for
a. removing tons of oxygen from the atmosphere. b. converting nitrogen in the soil to nitrogen gas. c. providing usable forms of carbon and nitrogen for other organisms. d. killing harmful bacteria in soil. e. producing many antibiotics.
A transgenic organism is:
An organism that contains DNA from a donor species An organism that is both prokaryotic and eukaryotic An organism that can transfer its genes to another organism of the same species. An organism that has both RNA and DNA as the core genetic material. An organism that is created by the use of plasma.