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.
Answer:
The phase in which two haploid daughter cells are produced is telophase.
Explanation:
Information regarding parachute jumping sites may be found in the Airport/Facility directory, which stores thousands of documents on aeronautics information. The Airport/Facility directory is provided by the Federal Aviation Administration, which is a branch under the Department of Transportation.
It gets blurry and further away because it is not changing
Answer:
Explanation:
Natural selection is based on Darwin’s observation that individuals most likely to survive and reproduce are those with traits best suited to their current environment.
