Question

Функции мембраны и цитоплазмы

Answer 1

Мембрана защищает клетку и удерживает форму клетки а внутры мембраны есть цитоплазма

Answer 2

Functions of the Membrane:

The cell membrane, also known as the plasma membrane, is a vital component of all cells. It serves several important functions:

1. Selective Permeability: The cell membrane regulates the movement of substances into and out of the cell. It allows certain molecules to pass through while preventing the passage of others. This selective permeability helps maintain the internal environment of the cell and allows it to communicate with its surroundings.

2. Protection and Support: The cell membrane provides a protective barrier around the cell, shielding it from the external environment. It also helps maintain the shape and structure of the cell.

3. Cell Signaling: The cell membrane contains various proteins and receptors that play a crucial role in cell signaling. These proteins allow cells to communicate with each other and respond to external signals, such as hormones or neurotransmitters.

4. Transport of Nutrients and Waste: The cell membrane facilitates the transport of essential nutrients, such as glucose and amino acids, into the cell. It also helps remove waste products, such as carbon dioxide and metabolic byproducts, from the cell.

Functions of the Cytoplasm:

The cytoplasm is the gel-like substance that fills the cell between the cell membrane and the nucleus. It performs several important functions:

1. Cellular Metabolism: The cytoplasm is the site of many cellular metabolic reactions. It contains various enzymes and organelles involved in processes such as glycolysis, protein synthesis, and lipid metabolism.

2. Storage and Transport: The cytoplasm acts as a storage site for various molecules, including nutrients, ions, and waste products. It also serves as a medium for the transport of molecules within the cell.

3. Support and Shape Maintenance: The cytoplasm provides structural support to the cell and helps maintain its shape. It contains a network of protein filaments called the cytoskeleton, which gives the cell its shape and allows for cellular movement.

4. Cellular Respiration: The cytoplasm is involved in cellular respiration, the process by which cells generate energy in the form of ATP. Glycolysis, the first step of cellular respiration, takes place in the cytoplasm.

5. Cellular Communication: The cytoplasm plays a role in intracellular communication. It contains signaling molecules and proteins that help transmit signals within the cell, allowing for coordinated cellular responses.

In summary, the cell membrane functions in selective permeability, protection and support, cell signaling, and nutrient and waste transport. The cytoplasm functions in cellular metabolism, storage and transport, support and shape maintenance, cellular respiration, and cellular communication