what are Immune Checkpoints? are they proteins on immune cells like white blood cells? what is their function in immune system and how do they work?

Describe the function of the immune system.

The Cell Cycle Control System is based on a connected series of biochemical switches that initiate specific events. What checkpoints are during the Cell Cycle? Initiation of transcription, translation, post-translation modification DNA replication and mRNA splicing, Start in late G1, G2/M transition, Metaphase-to Anaphase transition Translation and ribosome assembly Interphase to interphase checkpoint, Start G1, Telophase-to-prometaphase transition

What are antigens?Proteins found on the surface of cellsMicrobes that cause diseasesProteins that bind to pathogensProteins that kill toxins released by pathogens3Which of the following statements about antibodies is not true?They can cause pathogens to clump togetherA single antibody can destroy a wide range of pathogensThey attach to antigensThey are produced by white blood cells4

write a one paragraph explanation of how the immune system works in helping to fight disease. You could do this under the flowchart.

Antigens:Question 22Select one or more:a. are used by the immune system to identify what is part of the body and what is a pathogen.b.are often large proteins (some carbohydrates and lipids can also be antigenic).c.stimulate the activity of T and B lymphocytes.d.are found on the surface of cells (both pathogens and body cells), and on pollen, toxins, and food.