Important parts of biological membranes

A biological membrane can be described as a membrane which encloses a cell. It separates a cell from the outer environment.

The main components of a biological membrane include proteins, lipids and carbohydrates. The carbohydrates either attach to lipids forming glycolipids or they attach to proteins forming glycoproteins.

The structure of a biological membrane constitutes of phosphate heads and tails which are made of fatty acids. The membrane contains a phospholipid bilayer.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

pie chart because it is in percents ( % )