Bacterial exotoxins are typically

Below is a figure of the phylogenetic relationships between a group of coronaviruses. In the figure, coronaviruses that infect human beings and cause the common cold are highlighted in orange, and human-infecting SARS viruses are highlighted in red. Figure is from Nature Microbiology 5: 536–544(2020).   Based on this data, Is the following statement True or False? The closest relative to MERS-CoV is EriCoV.

True/False. The main reservoir for Staphylococcus aureus within the human body is the skin.

True/False. The main reservoir for Staphylococcus aureus in the human body is the oral tract, particularly the oropharynx.

True/False. It would likely be more difficult to completely eradicate a pathogen with an environmental reservoir than to eradicate a pathogen with a human-only reservoir.

Consider the following mRNA sequence, where the underlined AUG indicates a start codon for translation:  5′ AAAAUGGUCCUCGGCUCGCUAUCA 3′ When the GGC codon is in the A site, what codon will be in the P site? For your answer, write only the codon in the blank, written from 5′ to 3′ direction, but do NOT add 5′ or 3′ or any punctuation. So your answer should just be something like : GGG

Which is true about Y. pestis, the cause of the plague?

True/False. Microbes in the human colon maintain their presence by attaching directly to intestinal epithelial cells.

Staphylococcus aureus produces [blank] enzyme, which allows it to be distinguished from other staphylococci.

 You are investigating a food poisoning illness and find that most of the people who got sick were at the same picnic four hours before the onset of symptoms. Based on this information, you suspect a