Answer:
Two back-to-back phospholipid layers with the polar heads facing out on both sides
Explanation:
Phospholipids are made up of a head and two tails. The head can be described as a phosphate molecule that is water loving (hydrophilic) whereas fatty acids make up the two tails. The fatty acids repel water and hence are hydrophobic. The assembling of the phospholipids for the the formation of cell membrane depends on these hydrophilic and hydrophobic properties. The assembling of the phospholipids is in two layers. The phosphate head face outwards on both sides to attract water and the tails tend to hide from the water molecules by being composed in the layers of the head. this assembling is termed as the "self-assembly".
When Phospholipds are mixed with water , they spontaneously rearrange themselves to form the lowest free- energy configuration. this means that the hydrophohobic regions find ways to remove themselves from water , while the hydrophilic regions interact with water. the resulting structure is called a lipid bilayer.
Answer:
The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change.
Explanation:
Answer: Uniformitarianism, states that the geological processes that take place today would have taken place in the past and it will continue in future as well.
Darwin suggested that the the evolution takes place over a period of time. It takes time to change and this change takes time.
Both the laws states the same thing, that the geological processes and the process of evolution takes place over a period of time and does not takes place rapidly.
Sorry about the other person I reported her answer.
