Name two acid-fast species and the diseases they cause.

Streptococcus pyogenes is a Gram-positive human pathogen. It has a cell diameter of 600nm. How many entire Streptococcus pyogenes could fit across this computer screen? (The screen measures 0.24 meters across.) Write just the number with any needed commas. Do not include units.

Both ethanol and trimethyldodecylammonium chloride are active ingredients in cleaning products used to disinfect.  Both will inactivate coronaviruses by a similar mechanism of action.  Describe that mechanism of action and why both chemicals are able to cause it.  (Reminder: coronaviruses are "lipid envelope" viruses.) Consider the physical properties of these compounds to answer the following question: why might you choose to use a cleaning product with one of these active ingredients over the other?

Given this, if you used 6g of vitamin Z powder to make 20 ml of solution, what is the % concentration of this solution? (I gave the image since I don't know if that info is needed to solve this question.)It also gives a follow-up, if you can help here too: You work in a lab as a summer student. One of your tasks is to make sure that there is enough cell culture medium containing antibiotics to grow bacteria.  One day you realize that there is only 5 ml of 10% Antibiotic stock solution in the freezer. You decide to use it all to prepare the working culture medium with 0.01% antibiotic. In the lab there is plenty of growth medium without antibiotics. (Note: dilution in medium is like dilution in water). You remember the equation to make dilutions of stock solutions. You usually use this formula to calculate the required volume of a stock solution, but you realize it can apply here as well, even though the unknown is the final volume. So, you make that dilution.  Given that each bacterial…