What is the purpose of heat fixing? Why did the slides need to be heat fixed during the direct stain but not during the negative stain? A. Define the three major types of bacterial shapes. Which of...

What is the purpose of heat fixing? Why did the slides need to be heat fixed during the direct stain but not during the negative stain? A. Define the three major types of bacterial shapes. Which of these did you observe in the B. exercise? C. Is Crystal Violet a basic substance or an acidic substance? Is Congo red a basic or an acidic substance? Describe how you were able to arrive at this conclusion and relate your findings to your experimental observations