A new microbe has been discovered in the rumen of sheep. Microscopy shows no evidence of a nucleus and biochemical studies of the cell wall demonstrate the lack of peptidoglycan. Metabolic studies show that this microbe generates methane. This microbe would most likely be classified in ______.

Based on the table of attributes given below, which of the following statements are FALSE? Characteristic                        Bacterium A           Bacterium B Endospore formation             yes                            no Capsule                                    no                             yes Type IV pili                              yes                            no Flagella                                    no                             no Morphology                            bacillus                     bacillus  

One of the main differences between eukaryotes and prokaryotes is the presence/absence of what structure?

    Based upon the information above, organism B:

Salmonella enterica Typhimurium produces endotoxin. A student performs a Gram stain on the organism and observes Gram positive cells. The student must have made an error during the Gram stain process. 

A student performs a Gram stain on a mixed culture and leaves the decolorizer on the slide for 30 seconds. Based on your knowledge of the Gram stain procedure, Gram-positive organisms will appear __________ and Gram-negative organisms will appear __________ under the microscope.

If the decolorizer is NOT left on the specimen long enough in the Gram-staining procedure, Gram-positive organisms will be stained __________ and Gram-negative organisms will be stained __________ after the decolorizing step.

Penicillin and penicillin derivatives target what cellular processes?

      Based upon the information above, organisms A belongs to which category:

After you boiled the media in the flask to kill every living form in the swan-neck flask, you let it sit in your room for a week. In which section of the flask (shown below) would you expect to NOT find microbes?