Iron and oxygen are unbalanced in this equation.
The main components of a biological membrane are lipids, proteins and sugar.
Most of the biological membranes have two layers of lipids forming two sheets where proteins are in between the lipids trespassing both layers of only one, either to one side of the membrane or to the other. There are also sugars attached either to the lipids (called glycolipids) or to the proteins.
Answer:
During meiosis, homologous chromosomes may exchange genetic material during a process called "crossing over."
The answer is A. They contain a large amount of gas and dust
