Small Molecules enter the small intestine after going through the stomach. It gets broken into even smaller pieces. Then it goes into capillaries.
Gap Junctions
AnswerIt can be a peptide, if it is of medium size, and the biggest is a protein molecule. A large molecule made up of amino acids may also be an enzyme.
No, there is a huge variation in size. DNA and protein molecules are relatively huge. Water and oxygen molecules are quite small. Hydrogen is the smallest.
molecules that can survive the hydrophobic interior of the lipid bilayer
Small non-polar molecules may pass through a a semipermeable membrane but others require a protein channel.
Enzymes such as Trypsin, Chymotrypsin and Carboxy peptidase converts the Proteins, Peptons & proteoses into Dipeptides... Then Dipeptidase convert the dipeptides into Amino acids.. Finally this amino acids are absorbed by villi of small intestine... This happens to the Protein molecules we eat..
for
no
they get smaller
Protein channels allow the cell membrane to transfer large molecules across it. Remember, diffusion only occurs with small molecules. Protein channels are a necessity to transfer larger molecules.
A protein gate is a pathway through a protein molecule on the plasma membrane in which ions and small molecules can diffuse in or out of a cell.
Gap Junctions
AnswerIt can be a peptide, if it is of medium size, and the biggest is a protein molecule. A large molecule made up of amino acids may also be an enzyme.
Mouth, small intestine, and stomach
No, there is a huge variation in size. DNA and protein molecules are relatively huge. Water and oxygen molecules are quite small. Hydrogen is the smallest.
Small non-polar molecules may pass through a a semipermeable membrane but others require a protein channel.
An example of the protein-protein interactions is the antigen-antibody interactions. Because of the complexity of the protein molecules, the hydrophobic interactions are more dominant.