Describe the stages of phagocytosis (4 marks)
the phagocyte recognises the antigen on the pathogen surface as foreignThe phagocyte cytoplasm moves around the pathogen, and the membranes fuse, forming a phagosomeLysosomes containing lysozymes fuse with the phagocytic vacuole, lysozymes break down the pathogenThe phagocyte becomes antigen presenting to stimulate other immune system cells e.g T cells
AM
Related Biology A Level answers
All answers ▸Describe the primary, secondary and tertiary structure of proteins
Outline the reasons why insects and other animals need well-developed transport systems (3 marks)
During anaerobic respiration, pyruvate is converted to lactate by the enzyme lactate dehydrogenase. Explain the significance of this reaction.
Type 1 Diabetes is an autoimmune disease affecting the bodies ability to produce insulin. Describe how blood glucose is controlled in the body to a stable level, and how this would be affected in someone with type 1 diabetes.