Cell membrane usually refers to the surface membrane of cells, also known as the outer membrane of cells. Its function: it can maintain the shape of cells, resist harmful substances from outside, prevent the loss of some substances in cells, and also transport substances and transmit information.
2 cytoplasm
Cytoplasm, also known as cytoplasm, is transparent and gelatinous under living conditions and consists of matrix, organelles and inclusions. Organelle is a small organ with a certain morphological structure and performs special functions in cytoplasm. For example, mitochondria can provide energy; Golgi complex participates in protein processing; Protein of rough endoplasmic reticulum synthesis; Smooth endoplasmic reticulum has specific detoxification and calcium storage functions; Lysosomes are the digestive organs in cells; Centrosomes participate in mitosis.
Three nuclei
The nucleus is the regulatory center of various life activities of cells. Include nuclear membrane, nucleoli and chromatin. Chromatin is a kind of genetic material, which is easily stained by alkaline dyes in the nucleus.