Cytoplasmic Membrane

Definition - What does Cytoplasmic Membrane mean?

In botany, the cytoplasmic membrane refers to the membrane that encloses the plant’s cytoplasm. Botanical cell membranes are made up of the same components as animals, bacteria, and fungi. These include cholesterol, carbohydrates, proteins, and phospholipids. The primary function of the cytoplasmic membrane is to regulate the passage of water, minerals, and other substances to the plant’s cells.

MaximumYield explains Cytoplasmic Membrane

While it allows for a smooth transition of water, the plant’s cytoplasmic membrane prevents charged substances and larger molecules from entering the cells. The cytoplasmic membrane also regulates substances that leave the cells. Carbon dioxide (CO2), for example, can easily exit and enter the cells through the cytoplasmic membrane. While water also passes through the membrane, it circulates at a slower rate than other substances.

Molecules such as ions, amino acids, and carbohydrates are unable to cross through the cytoplasmic membrane since they are highly charged. These molecules are transferred through various proteins embedded within the cellular membrane instead.

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