Gram staining is the most common initial test of unknown identification, explain in your own words the process of gram staining

what would be the medical significance of finding a positive endospore stain result from bacilli bacteria obtained from a sample of honey that was fed to a baby wtih severe gastrointestinal distress?

Out of twelve tests that can be performed:  Gram Stain Wet Mount Endospore Staining Acid Fast Staining Differential & Selective Media (MacConkey, PEA, EMB, MSA Agar, Blood Agar, etc.) Oxidative-Fermentative Test Carbohydrate Fermentation MR-VP Testing Indole Production Citrate Utilization Triple Sugar Iron Testing Catalase Test.  Which four tests are the best fit to help identify bacteria that is unknown? Possible bacterias that are being observed are:    Enterobacter aerogenes Escherichia coli Micrococcus luteus Proteus vulgaris Pseudomonas aeruginosa Salmonella typhimurium Serratia marcescens Staphylococcus aureus Staphylococcus epidermidis

In the image attached is a unknown bacteria lab. The gram stain result and growth result is already given to us and is shown. What other tests (1-2 examples) could we use to follow up this test. Explain why we should use those tests with justification.

Nutrient agar and Gram stain results for the unknown lab attached.

Out of all these tests, which 2 would help further understand this unknown lab. (Gram Stain and Growth Result is already done) Possible Tests (pick 2 that would help know the unknown bacteria) Gram stain morphology & arrangement color and growth characteristics on agar 37C, 30C and 25C (room temp) CAMP test starch hydrolysis test bacitracin susceptibility test glucose, lactose, sucrose, maltose fermentation tests methyl red/MR test Mannitol MacConkey Phenol Red Vogues-Proskauer/VP test citrate utilization test urea hydrolysis test phenylalanine deaminase test SIM test (Sulfide/Indole/Motility) Nitrate reduction test Oxidase test Catalase test