What causes people to be color-blind
can be tested scientifically
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.
The body are digested by bacteria and thus recombines with soil and increase fertility of the soil !
Approximately 5-10% is passed on to the next highest trophic level
Gradualism is a pattern of evolution in which a species evolves at a slow, steady space. The correct answer is C.