What is difference between RER and SER Class 9 in points? The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface.
What is the function of SER?
sER is a membrane-bound network of tubules (see Figs. 1-1 and 1-3) without surface ribosomes. sER is not involved in protein synthesis. Its main function is the synthesis of lipids, steroids, and carbohydrates, as well as the metabolism of exogenous substances, such as drugs or toxins.
What is RER and SER Class 9?
The main difference between these two terminologies is that the Smooth Endoplasmic Reticulum is known for stocking the lipids and proteins. It is not bounded by ribosomes. Whereas, the Rough Endoplasmic Reticulum is bounded by the ribosomes and also stores proteins.
What is the function of RER Class 9?
3)RER help in transport of protein which are synthesised by ribosomes on their surface. 5)It function as cytoplasmic framework providing a surface for some of the biochemical activities of the cell. 6)Digestive enzymes of lysosomes are produced on RER. 7)Plasma membrane and other cellular membranes are formed on ER.
What is Golgi apparatus Class 9?
Golgi apparatus. Golgi apparatus. The stacks of flattened membranous vesicles are called Golgi apparatus. It basically stores, packs and modifies the products in vesicles. It temporarily stores protein that moves out of the cell through the vesicles of the Golgi apparatus.
What is function of Ser Class 9?
The smooth endoplasmic reticulum, or smooth ER, is an organelle found in both animal cells and plant cells. An organelle is a sub-unit within a cell that has a specialized function. The main function of the smooth ER is to make cellular products like hormones and lipids.
What is SER biology class 9?
SER (Smooth Endoplasmic Reticulum)
What is the main function of mitochondrion?
Mitochondria
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
What is osmosis Class 9?
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
What is nucleus diagram?
A nucleus diagram is very useful for studying its structure. Its structure consists of the following important parts: The nuclear membrane- This is an aspect of the nucleus that differentiates eukaryotic cells from prokaryotic cells. … This forms the lipid bilayer nucleus envelope. Also, it contains nuclear pores.
What is endocytosis in biology class 9?
Endocytosis is defined as the process of trapping a particle or even a substance from the external environment by the process of engulfing it. The flexibility of the cell membrane helps the cell to engulf the food and also other materials from the external environment. Such a process is called endocytosis.
What are cisterns Class 9?
Answer: A reservoir or a closed space filled with body fluid like chyle, lymph, or cerebrospinal fluid etc is called cistern.
What is mitochondria class 9th?
Mitochondria are round « tube-like » organelles that provide energy to a cell in the form of ATP (Adenosine Triphosphate) for performing different chemical activities for the sustainance of life.
What is cisterns class 9th?
Answer: A reservoir or a closed space filled with body fluid like chyle, lymph, or cerebrospinal fluid etc is called cistern.
What is Plasmolysis Class 9?
Plasmolysis is the process in which cells lose water in a hypertonic solution. … Through observation of plasmolysis and deplasmolysis, it is possible to determine the tonicity of the cell’s environment as well as the rate solute molecules cross the cellular membrane.
Where is SER found?
Smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular …
What is the function of SER Class 11?
– The smooth endoplasmic reticulum plays an important role in the synthesis of lipids such as cholesterol and phospholipids. – Apart from the synthesis of cholesterol and phospholipids it also helps in secretion of steroid hormones from lipid precursors.
What is SER in biology?
Smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular …
What is nucleus in biology class 9?
The nucleus is small, round and membrane bound structure found in cell. The fluid inside the nucleus surrounded by nuclear membrane is called nucleoplasm. It controls the cell’s growth and reproduction because it contains cell’s hereditary information. It is covered by dual layer called nuclear membrane.
What is the main function of Golgi body?
A Golgi body, also known as a Golgi apparatus, is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell. Named after its discoverer, Camillo Golgi, the Golgi body appears as a series of stacked membranes.
What is the main function of chromosome?
The most important function of chromosomes is to carry the basic genetic material – DNA. DNA provides genetic information for various cellular functions. These functions are essential for growth, survival, and reproduction of the organisms. Histones and other proteins cover the Chromosomes.
What is the main function of nucleus?
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.
What are the 3 types of osmosis?
What are the three types of osmotic conditions that affect living cells? The three types of osmotic conditions include- hypertonic, isotonic, and hypotonic.
What is called osmosis?
In biology, osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell’s partially permeable membrane.
What is cell membrane class 9th?
It separates the content of cell from their external environment. It allows the materials from surrounding to enter and exit the cell. It also allows the materials from cell to exit outside. It controls the entry and exit of materials in nd out of cell and hence it is called selectively permeable membrane.
References
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