Answer:
This sample will absorb less energy because the more water, the harder it is to absorb all of the water. The other sample has less so the sand can absorb it more easily.
Explanation: Hope This Helps :)
Answer:
b). activation of T cells
Explanation:
An APC (antigen-presenting cell) can be described as an immune cell, which detects, uptakes, and informs the acquired immune response when an infection takes place. B cells, macrophages, and dendritic cells are antigen-presenting cells.
These cells play an important role in activation of T cells. T cells are unable to recognize soluble or free antigens and can only recognize antigens processed and presented by carrier molecules, such as MHC molecules.
Presence of MHCII molecules is a defining feature of APCs that process and present antigens to T cells. Hence, all antigen-presenting cells help in activation of T cells.
Thus, the correct answer is option (b).
Answer:
the first answer I believe but I could be wrong
This experiment helps to determine the role of the cell membrane, sort the molecules that come in and out thanks to the semi-permeability of the cell membrane and the presence of transmembrane transporters.
A good example to illustrate the functioning of this kind of membrane is dialysis, this is done through a dialyzing membrane that only passes small molecules (that we want to eliminate). Cells and large molecules such as proteins remain trapped in their compartments.
