The false statement is: T lymphocytes produce antibody molecules
B lymphocytes produce antibody molecules.
B cells and T cells or lymphocytes are both cells of the adaptive immune system. Progenitor T cells mature (start to express T cell receptors TCRs, CD4 /CD8 receptors) into T cells in lymphoid organ-thymus. T cell can recognize only those antigens that are presented on antigen-presenting cells, on their surface MHC molecules.
There are three types of T cells: Helper T cells,Cytotoxic T cellsand T regulatory cells.
Answer:
1-Mouth:the mechanical digestion takes place in mouth with the help of teeth. chewing is the machanical digestion of food in mouth.
2-Stomach: by the churning process. churning is the mixing of food in stomach by the movements of smooth muscles in stomach wall.
Explanation:
Answer: they both suggest that snakes evolved from an ancestor with legs
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