Question

Does anyone know these?

1) a) reactions that require an input of energy are called___
- is the answer endergonic /spontaneous ??

b) proteins on the surface of the coronavirus allow them too e enter into our cels during an infection by binding to receptors. since receptors pass through the plasma membrane these proteins are called _______. The virus enters by being engulfed by your cell in process known as ________
- is the answer: integral proteins, and phagocytosis?

c)T/F (if false give right answer)- signaling events that travel via blood vessels are called autocrine signals

- true??

Answer 1

1. a) Endergonic Reaction   

It is a reaction that requires energy to be driven. The activation energy for the reaction is typically larger than overall energy of the exergonic reaction. Endergonic reactions are non-spontaneous.

b) Corona virus Spike Protein (S -Protein)

Corona virus Spike Protein is found on the  surface of corona virus . This protein allows the virus to bind to specific receptors on the surface of human cells, the first step towards infecting cells.

  

Phagocytosis

Phagocytosis is a process  in which a cell by to the item it wants to engulf on the cell surface and draws the item involved by engulfing around it. The process of phagocytosis often happen when the cell is trying to destroy something like a virus or an infected cell and is often used by immune system cells.

c) False. Autocrine signalling is a form of cells signalling in which a cell secretes a hormone or chemical messenger that binds to autocrine receptors on the same cell leading to change in the cell. The right answer is endocrine signals in which a cell targets a distant cell through blood stream.