felipa11

10.06.2021 • 

Biology

Arrange the following statements to create the proper order of events in the humoral immune response: 1. The helper T cell interacts with antigen presented in an MHC-Il molecule.
2. The B cell divides to produce memory B cells and effector B cells.
3. Antibodies specific for the antigen are produce in large numbers.
4. The helper T cell secretes interleukin-2.
5. The B cell presents antigen fragments specific for its surface antibodies using MHC-Il molecules on the cell surface.
O 1,3,2,5,4
O 5, 1, 4, 2,3
O 3,4,2,5,1
O 4,2,5, 1,3
O 2,4,3, 1,5

Ответ:

xjulizza

08.05.2020

Biology

---

Amoeba reproduces by binary fission which is a method of cell division. First, the cell chromosomes replicate. Next, the cell becomes longer and starts to break off at the centre. The cell wall fills in as it starts to break off. After the division is complete, there are two identical cells.

---

0,0(0 оценок)