Answer: B
Explanation:
The T helper cell needs to acttivate the T cyctotoxic cell in order for the Tc cell to go do its work.
Once the TC cell is active it interacts with MHC-1 proteins on the surface of the infected host cell, this allows the Tc cell to recignise the host cell and begin secreting cytotoxins (perforins and granzymes) in order to degrade the infected cell and cause apoptosis (controlled cell death)
The answer for that is B, and E it should be all in your book
A certain minivan has a maximum carrying capacity of 1,200 pounds. The luggage weighs 150 pounds
A balance of organic and inorganic materials
