Why is the catabolic activity of enzymes essential to ensure and regulate cellular metabolism?

Which sequence represents a cross section of the bilayera hydrophilic head, hydrophobic tail, hydrophobic tail, hydrophilic headb hydrophobic tail, hydrophilic head, hydrophobic tail, hydrophilic headc hydrophobic head, hydrophilic tail. hydrophilic tail, hydrophobic headd hydrophilic tail, hydrophobic head, hydrophobic head, hydrophilic tail

Twind is considered to be an abiotic factor because it.?

What noticeable trend from this graph might be used to make a conclusion?