Lysozyme is a catalytic enzyme that cleaves NAG-NAM units in the bacte- rial cell wall, and is found in external secretions of the body. Why does this enzyme show optimum activitv at pH -5 and decreased activity above or below this pH?

Phagocytosis of a bacterial cell by a macrophage, involves extensive remodeling of the actin microfilaments in the cell cortex to produce extensions of the plasma membrane and formation the phagocytic cup. Based on your knowledge of microfilament assembly/disassembly and related cell membrane deformation, explain the underlying processes that would be involved in formation of the phagocytic cup.

Please explain why it's true or false

Please help me with this

Secretory vesicles (destined for exocytosis) that fuse with the plasma membrane continuously, with no requirement for hormones or any other environmental signal, are properly referred to as: the v-SNARES constitutive secretory vesicles (like those that carry lipids, such as phosphatidylcholine) the endosomes regulated secretory vesicles (like those that carry hormones, such as insulin) the t-SNARES

Explain why the hexose monophosphate shunt is so important.

How does cystic fibrosis affect membranes of Nucleus Mitochondria Endoplasmic reticulum lysosome

How does the processing of N-linked oligosaccharides and lysosomal proteins differ from that of secreted and plasma membrane proteins in the Golgi apparatus?

A genetic mutation leads to reduced function/loss of function of the V-ATPase on the surface of cellular lysosomes. Explain the role of the V-ATPase on the lysosomal membrane and the possible consequences of the reduced/lost function of this membrane protein.

Which of the following vitamins do you expect to enter the cell via diffusion (i.e., NOT need a transporter?) A с В но N НО ОН. D НО NH₂ ОН OH