Biology – Physiology

NR 283 Exam 1   UNIT 1 Tag: nr 283 exam 1 Cellular communication– when cells send and receive messages to and from each other. These messages are in the form of chemicals such as hormones and neurotransmitters.   Cellular respiration– process that releases energy by breaking down glucose and other food molecules in the […]

Using the Internet, conduct your research on the Gram stain. Based on your research, respond to the following:What is Gram staining?What is its significance?What is the procedure of the Gram stain?How did the advent of this techniquechange our understanding of microbiology?

Pick any two diseases that require diagnostic tests to identify them from the body system. Use one of the body systems: cardiovascular, respiratory, renal, hepatobiliary, lymphatic, reproductive or nervous systems. For each of the diseases, explain:Why is a particular test recommended?How does the test work?What information is obtained from the diagnostic test regarding the disease?Does the diagnosis need confirmation with another diagnostic test?