please ans que no 10 ,11 & 12
plz ans it fast
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ans 11) a. warm blooded
b. gymnosperms
c. nematodes
ans12) u=20m/s
V=0
v²-u²=2gh
h=½(v²-u²)/g=-½×20²/10=10m
PE=mgh= 3×10×10
= 300j
b. gymnosperms
c. nematodes
ans12) u=20m/s
V=0
v²-u²=2gh
h=½(v²-u²)/g=-½×20²/10=10m
PE=mgh= 3×10×10
= 300j
These cells identify targets by binding to antigen associated with MHC (major histocompatibility molecules )class I molecules.
Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules.
MHC are special class of molecules present on cells.
Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules.
MHC are special class of molecules present on cells.
9 th
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