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The cell membrane is important for compartmentalising different parts of the cell to allow metabolic functioning to occur and to control substances in the cell. It allows control of substances entering the cell and it allows the cell to compartmentalise waste into the vacuole.
- Lipids
- Proteins
- Carbohydrates
It is one of the main components of the cell membrane that makes up the cell’s structural framework. Membrane lipids are of the following types: 1. Phospholipid: Major component of the cell membrane forming a bilayer structure. The hydrophilic (water-loving) head of phospholipids points towards the inner cytoplasmic side and outer extracellular flu...
It is the second major part of the cell membrane. The two main categories of membrane proteinsare: 1. Integral Membrane Proteins: Also called intrinsic proteins, they are permanently embedded within the cell membrane. Structurally, the integral proteins are hydrophobic in nature that penetrates the phospholipid bilayer, thus anchoring the protein t...
It is the least abundant component of the cell membrane. Carbohydrates are found on the outside surface of cells that exists in either of the following two forms: 1. Glycoproteins: Proteins having carbohydrate chains attached to them. They are embedded within the cell membrane and are important in cell-to-cell communications and transport of substa...
May 17, 2023 · A plant cell is the basic building block of a plant. Plant cells, like all eukaryotic cells, contain a nucleus and other organelles, each with its distinct functions. However, plant cells also possess unique components that differentiate them from animal, fungal, and bacterial cells.
- Cell Wall. It is the outermost, protective layer of a plant cell having a thickness of 20-80 nm. Cell walls are made up of carbohydrates such as cellulose, hemicellulose, and pectin and a complex organic polymer called lignin.
- Plastids. They are double membrane-bound organelles that have their own genetic material. Plastids are mainly of three types: a) Chloroplasts: Found in the green parts of a plant and algae that contain the photosynthetic pigment, chlorophyll.
- Central Vacuole. It is the large vesicle that make up almost 30 to 80% of the total plant cell volume. The central vacuole is often the largest organelle in the cell that is filled with fluid, ions, enzymes, and other molecules.
- Cell Membrane or Plasma Membrane. It is a thin, biological membrane having a thickness of 7.5-10 nm that separates the interior of the cell from the outside environment.
Jul 27, 2022 · Cell membrane. The cell membrane is made up of layers of protein and lipid (fats and oils are examples of lipids). The cell membrane is semi-permeable — it allows select compounds in and out, but blocks other types of compounds.
Jan 18, 2024 · The central vacuole is a large, membrane-bound structure that fills much of the plant cell. The membrane surrounding the central vacuole is called the tonoplast . The central vacuole plays a key role in regulating the cell’s concentration of water in changing environmental conditions.
A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein. These components are organized into three major layers: the primary ...
