The two groups differ in the composition of the cell wall and the lipids in the cell membrane. 3. ... Organelles contribute to efficiency in eukaryotic cells because they concentrate the biochemicals needed for chemical reactions so that the reactions proceed more rapidly.
Answer:
Autacoids or "autocoids" are biological factors (molecules) which act like local hormones
Less risk of type 2 diabetes
Elements in the first row (hydrogen and helium) will have outer electrons in the first energy level. Their principal quantum number is 1. Elements in the second row (lithium through neon) will have valence electrons in the second energy level with a principal quantum number of 2.
They have a cell membrane, they contain cytoplasm and can replicate themselves through the manner of mitosis.
