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Westkost [7]
3 years ago
13

What is (are) the role(s) of complement proteins in the immune response?

Biology
1 answer:
AlexFokin [52]3 years ago
3 0


The correct answers are I and  IV

There are three main effects  of complement :

1. Lysis of cells such as bacteria and tumor cells.

2. Generation of mediators that participate in inflammation and attract neutrophils to the site of infection, an event called chemotaxis.

3. Opsonization i.e. enhancement of phagocytosis.

Lysis of pathogens by complement involves the insertion of  a special substance called the membrane attack complex into the cell membrane of the pathogen which disrupts or punctures the membrane as  a result of which water  and electrolytes enter the pathogen and it dies. 

Generation of mediators known as C5a and C567  complex attract neutrophils.


 

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Discussion
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Answer:

The answer to these questions are the following:

1. sucrose solution (higher concentration of water molecules in the onion cells) >> red onion cells will shrink >> smaller diameter

2. distilled water (higher concentration of water molecules in the surrounding solution) >> red onion cells will become turgid >> higher diameter

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3. In a hypertonic solution, the cells will shrink (plasmolysis)

When plant cells are placed into a hypertonic solution where there is a greater concentration of solute outside the cells (as in this case sucrose solution), water molecules will move from inside the cells to outside the cells, thereby cells will shrink due to water loss

When plant cells are placed into a hypotonic solution that is diluted in comparison to the content of the cell (as in this case plant cells placed in distilled water) water molecules will move from outside the cells to inside the cells, thereby cells will become turgid.

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brainly.com/question/11789335?referrer=searchResults

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