Which statement about the cell membrane is true?

Which statement about the cell membrane is true?

A)It contains cellulose and sugars that are involved in communication.

B)It is present in animal cells only.

C)It is rigid and elastic for supporting the cell’s shape.

D)It prevents harmful substances from entering a cell.

Answer: A)It contains cellulose and sugars that are involved in communication.

Body composition means the concentration ratio of various materials that contribute to total bodyweight, mainly fat mass against lean tissue mass. Fat mass consists from subcutaneous fat (under the skin) and visceral fat (organs), whereas lean tissue mass has muscle, bone, organs and other tissues as its components. The measurement of body composition is a source of very important information, including the pressure kept by the body: excess body fat is directly linked to obesity and cardiovascular diseases, as well as metabolic disorders. Specifically, as a result of the higher percentage of lean body mass, better health and physical fitness are linked to it in most cases. When it comes to sports, nutrition, and medical research, body composition analysis is a primary technique for accessing the risk profile, observing the progress, and designing the right intervention or training plan.