Use the following information to answer the questions.A part of an mRNA molecule with the following sequence is being read by a ribosome: 5′-CCG-ACG-3′ (mRNA). The following charged transfer RNA molecules (with their anticodons shown in the 3′ to 5′ direction) are available. Two of them can correctly match the mRNA so that a dipeptide can form. tRNA Anticodon Amino Acid GGCCGUUGCCCGACGCGG ProlineAlanineThreonineGlycineCysteineAlanine Which of the following dipeptides will form from this mRNA?

A single base substitution mutation is likely to have a less deleterious effect when the base change exhibits which of the following results?

An unknown organism was inoculated on MacConkey agar and a glucose sugar fermentation broth and incubated for 24 hours. The results of these inoculations are shown below. Based on the results observed, what can you determine about this organism?  

A litmus milk tube with a white color is positive for

__________ is particularly useful when trying to differentiate Salmonella and Proteus species. 

Identify the reaction(s) that occurred in the litmus milk tube labeled B in the image below. Tube A is an uninoculated control. 

An unknown Gram-negative organism was inoculated on a variety of selective and differential media. The results for the eosin methylene blue (EMB) agar plate are shown below. Based on the observed growth, which of the following organisms can be eliminated from the list of possible bacteria used for the inoculation? EMB plate

The organism below is ______ for the enzyme oxidase.  

A Gram-positive cocci that is positive for mannitol fermentation and DNase is most likely

Phenylethyl alcohol agar is a(n) _______________ medium containing an ___________.