Question

Late 2019 and early 2020 saw the appearance and spread of a novel coronavirus SARS-CoV-2 of zoonotic (animal) origin, spreadi3. In early March, it was reported that two main strains of SARS-CoV-2 had been identified, termed S and L, with the S type ba. What is the host membrane bilayer made of? he lips bilayer consists of phospholipids arranged in two layers. Hence it is cb. What is the other main macromolecule that comprises the fluid mosaic model of a cell membrane? Other than phospholipids,

5.To gain entry, spikes of the SARS-CoV-2 bind to angiotensin-converting enzyme 2 (ACE2) found in epithelial cells especially of the respiratory and oral passageways. As such, these cells are susceptible to infection by SARS-CoV-2. ACE2 is a protein consisting of multiple alpha-helices that is embedded in, and spans, the membrane. What is this type of protein called, and what structure do the alpha helices represent?

6.Following binding of spike proteins to ACE2, SARS-CoV-2 likely gains entry into the cell either via fusion of its envelope with the cell membrane, or via endocytosis. If the latter, the virus must escape the endosome before fusion with the cellular lysosome. Once inside the cytoplasm, the virus unpackages and its positive stranded RNA genome is released.

  1. What is endocytosis?
  1. What is a lysosome, and what is its importance in the cell?
  1. What type of macromolecule is RNA?
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Answer #1

This type of protein is called membrane spanning proteins.

Alpha helix represent the secondary structure of proteins.

6. Endocytosis is the process of engulfing the extracellular components by the invagination of cellular membrane.

Lysosome is the acidic compartment of cells which contain many hydrolytic enzymes .it becomes fused with the endosome or late endosome which is produced when something has been captured by cell either by phagocytosis or cell has to digest some protein intracellularly.

Then these late ENDOSOME fused with lysosomes and digest the particles which is present inside the endosome.

RNA is a nucleic acid which can produce proteins.

Thank you

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