I think it’s the cell membrane if you’re talking about animal cells and plant cells.
The bond angle in the Water Molecule is approx. 104.5 degrees. The methane molecule is approx. 109.5 degrees. The differences, is due to the force from the surrounding molecules and atoms. For example the Lone pairs of electrons.
Answer is because
Please give feedback
A) Head to tail joining of monomers. :) (confirmed correct answer, I took the test)