Consider the Lewis dot structure for NH3 .  The central atom is surrounded by 

The molecular geometry of the first carbon in the molecule below is

Consider the Lewis structure for iodine trifluoride.  What is the formal charge for the iodine atom?  

The radii of the species Cl-, Al+3, P-3 and S-2 increase in the following order:

The molecular geometry of the carbonate ion is most similar to the molecular geometry of

Chapter 2: How We Get Our Microbiome   It is believed that a fetus is probably axenic (free from microbes) while in utero. At what point does the baby obtain its first microbial colonizers?

Chapter 3: In Sickness and In Health   True or False: When the feces of an obese mouse are transferred to a lean mouse, the lean mouse gains weight and becomes obese.

Chapter 6: Antibiotics   Which of the following statements about the effects of antibiotics is false?   Select ALL that apply.

Introduction   How many microbial cells colonize the average human compared to a person’s own cells?

Today we will be explaining how to perform a rapid strep test. If positive we would then streak the throat swab onto a blood agar plate. If indeed positive for strep, what should the blood agar plate look like the following day?