14. label the diagram using terms from the following list:
• memory cell
. b cell
. pathogen
• antibody
• antigen

Answ

Left - antigen

Top Right - antibody

Bottom right - B cell

Explanation:

Antibodies (top right label) are Y shaped proteins involved in the detection of pathogens. They specifically detect molecules associated with pathogens called antigens (left).

Antibodies are produced by B cells (bottom right) which are a specialised class of immune cells that make up part of the adaptive immune system. B cells are often referred to as white blood cells.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.