Order the following events in quorum sensing by Staphylococcus aureus: 1. Exotoxin expression increases, while expression of surface adhesins decreases. 2. AgrB-D-C-A operon is expressed at low levels. 3. RNA III accumulates. 4. AgrD peptide is processed and secreted by AgrB, creating the mature pheromone. 5. Pheromone accumulates when population densities are high. 6. AgrC phosphorylates AgrA. 7. AgrA-P binds to promoters P2 and P3, activating both. 8. Pheromone binds to the sensory kinase AgrC. Group of answer choices

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Name the glands associated with human digestive system

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen