Molecules enter and leave the cells

Organic Molecules are molecules that are produced from living things.  The more complex molecules known as polymers are those such as carbohydrates,nucleic acids,and proteins.  Carbohydrates are assembled by linking sugars.  Complex linking results in large molecules such as starch and cellulose.  When carbohydrates are attached to proteins they alter the functioning of the protein. DNA and RNA are nucleic acids that are made by linking together nucleotides.  DNA contains the genetic information,and RNA gives information to the rest of the cell and directs everything.  Long chains of amino acids are called proteins they are held together with a unique bond known as the peptide bond.  Enzymes are catalytic proteins which carry out many vital processes to obtain energy from food, keep the flow of ions in and out of cells occurring, carry oxygen, and create new molecules such as DNA, RNA, lipids, carbohydrates, and other proteins. Proteins provide a structural backbone for the cell as well and provide a means of moving molecules within the cells.  The molecules enter the cell through indigestion and leave the cell through digestion.  They can use passive and active transport.  Small uncharged molecules from the food the expecting elephant consumed would be transported through the cell membrane of the fetus cells through simple diffusion.  Water is transported to the fetus cells through the cells through the process of osmosis,which is when water crosses a semipermeable membrane.  Active transport and facilitated diffusion allows larger and charged molecules like sodium and potassium to cross through the membrane,nourishing the cells of the fetus.