Please help me :((
Please answer A , B, and c

A) carbon is the essential component of macromolecules, counting proteins, lipids, nucleic acids, & carbohydrates. carbon’s atomic structure permits it to bond in numerous diverse ways & with numerous distinctive components. the carbon cycle appears how carbon moves through the living & non-living parts of the environment.

b) the major component of cell membranes are lipids. they have two groups attached to them which are called “hydrophobic fatty acid tails” & “hydrophilic head”. B cells are called lymphocytic cells which provide immunity by secreting antibodies. cancer cells are cells which continuously repeat itself to form a tumor structure. when the polar parts interact hydrophobic tails are lined up with one another. they form a membrane which diffuses creating a membrane of hydrophilic head on two sides facing water. this a brief explanation of how polar & the nonpolar parts combine are explained.

Cherries for sure do doubt   

Where's the picture of the model?