Well there are 4 things in a dna molecule and that is adenine guanine thymine and cytosine well the DNA molecule keeps the cell moving in the right direction and also helps the cell reproduce and stay healthy
Answer:Their carbon skeletons are held together by covalent bonds
Explanation:They form the cells of an organism and perform the chemical reactions that facilitate life
Lipid is a fat and can be used as an energy reserve.
Hope this helps!!
Explanation:
Substances diffuse naturally from an area of higher to lower concentration.
Via diffusion, small molecules can move from regions of high concentration to regions of low concentration until an equilibrium- a stable balance of solute: solvent, is reached. This occurs along the concentration gradient of the molecule, and usually involves small non-polar molecules in cells such as oxygen and carbon dioxide. In cellular transport, diffusion is also referred to as passive transport.
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