What helps plasma membrane function?
channels and chain-like structures
pumps and gelatin-like material
chloroplasts and mitochondria
nuclei and endoplasmic reticula
ORGANELLES QUICK CHECK
The correct answer is "channels and chain-like structures". Channels are protein structures that allow specific molecules and ions to pass through the plasma membrane, while chain-like structures such as the cytoskeleton provide support and help maintain the structure of the membrane. Pumps, gelatin-like material, chloroplasts, mitochondria, nuclei, and endoplasmic reticula do not directly contribute to the function of the plasma membrane.
Plasma membrane function is crucial for the overall functioning of cells. It is responsible for maintaining the integrity of the cell, regulating the entry and exit of substances, and facilitating communication with the external environment.
The following options from your question can contribute to the proper functioning of the plasma membrane:
1. Channels and chain-like structures: Channels, such as ion channels or protein channels, play a vital role in transporting substances across the plasma membrane. These channels are formed by chain-like structures, such as proteins or lipids, that span the membrane and create passageways for specific molecules or ions.
2. Pumps and gelatin-like material: Pumps, such as ion pumps or active transport proteins, actively transport molecules against their concentration gradient, requiring energy. These pumps are embedded within the plasma membrane and assist in maintaining the proper concentration and balance of ions inside and outside the cell. Additionally, the plasma membrane contains a gelatin-like material known as the extracellular matrix, which provides structural support and helps anchor cells.
Chloroplasts and mitochondria are not directly involved in plasma membrane function.
Nuclei and endoplasmic reticula are organelles found within cells but are not directly associated with the plasma membrane's function.
Therefore, the correct options from your question that help plasma membrane function are channels and chain-like structures, and pumps and gelatin-like material.