ER (endoplasmic reticulum) is a tubular network that exists in a plant cell, as well as animal cells. This organelle is composed of two types: rough ER and smooth ER. The rough ER is composed of ribosomes, which are used to synthesize and modify proteins, while the smooth ER is without ribosomes, but instead uses enzymes to modify and transport lipids, phospholipids, and steroids.
Rough ER is responsible for producing membrane components and hormones, and storing them in the form of vesicles. It is also involved in the synthesis and transport of lipids and proteins. Smooth ER helps in the detoxification process, calcium ions concentration and the breakdown of glycogen.
It also helps in maintaining a membrane potential and synthesis of phospholipids and steroids.
Overall, the ER helps regulate cellular processes related to protein and lipid composition and helps secrete proteins and lipids in the form of vesicles, maintaining homeostasis in the cell. Additionally, the ER helps to maintain the cell’s shape and can also play a role in cell signaling.
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Do plants have a ER?
Yes, plants do have an endoplasmic reticulum (ER). The ER is an extensive membranous network found in the cytoplasm of cells, and it is known to play a vital role in protein biosynthesis, lipid metabolism, and carbohydrate breakdown and synthesis.
In plants, the ER works similarly to any other eukaryotic organism, in that it provides a subcellular environment where biochemical reactions take place in order to facilitate the biosynthesis of proteins and other molecules.
Additionally, the ER in plants is involved in the production and transport of proteins and other molecules that are necessary for growth and development. The ER is involved in the synthesis, assembly and transport of proteins, as well as acting as a storage organelle for calcium and other tonicity ions, which are essential for plant growth and development.
Furthermore, the ER plays a role in the development of response pathways to environmental signals and the transfer of molecules between cell organelles. The ER of plants is also important in energy conversion and the post-transcriptional modification of proteins, as well as other processes.
Is ER present in both plant and animal cells?
Yes, ER (Endoplasmic Reticulum) is present in both plant and animal cells. ER is an essential cellular organelle, responsible for the production, processing, and transport of proteins, lipids and other molecules throughout the cell.
In animal cells, ER takes the form of a network of membranes that surrounds the nucleus. Within this network, lipids and proteins are synthesized and transported to other cellular organelles. ER can also contain ribosomes, where proteins are made in both plant and animal cells, and stores calcium.
In plants, ER forms a complex network of tubules found in all parts of the cell. It is involved in the synthesis and transport of proteins, lipids, and other compounds to other organelles. Its structure and functions are similar to those of the ER in animal cells.
Additionally, the ER helps to maintain the cell’s shape and provides a transport system for vitamins, minerals and waste material.
Do plant cells have endoplasmic reticulum yes or no?
Yes, plant cells do have endoplasmic reticulum (ER). The endoplasmic reticulum is an organelle that is an important part of a cell’s structure and function. In plant cells, the endoplasmic reticulum surrounds the nucleus and forms complex networks of tubules and cisternae.
It is involved in the production and transport of different proteins, carbohydrates, and lipids, as well as providing structural support to the cell. The endoplasmic reticulum in plant cells also helps to store calcium ions, and maintains the cell’s osmolarity (the balance of salt and water in the cell).
In addition, the endoplasmic reticulum breaks down and recycles damaged or old proteins and other molecules.
Can plants feel pain?
No, plants do not have a nervous system, so they do not possess the capacity to feel pain in the way that humans and other animals do. They do possess some physiological responses to external stimuli, however these responses are much more primitive than an animals ability to experience pain.
For instance, a wilting or drooping leaf is a protective response to cold, intense sunlight, or lack of water. The plant simply reacts to its environment with programmed physiological behaviors, not conscious pain or discomfort.
Do plants have an electrical system?
Yes, plants have an electrical system. This system is known as the electrophysiology of plants and is based on the flow of electrons and ions. This electrical system helps plants to control the absorption of light, water, and nutrients, and it can also assist in the storage of energy.
The electrophysiology of plants is based on the movement of ions like potassium, chloride, and protons through channels within the membrane of the plant’s cells. Electrical signals can also help regulate processes like stomatal opening and closing, which controls the amount of water and carbon dioxide entering and leaving the plant.
Plants can also use electrical signals to communicate with other plants, helping them to coordinate activities like pollination or defending against predators. Electrophysiology is an important component of the overall physiology of plants and helps in understanding how plants respond to their environment.
Are ER in plants and animals?
Yes, endoplasmic reticulum (ER) can be found in both plants and animals. In plants, the ER forms a vast network of interconnected channels that originate from the nuclear membrane and radiate outward.
It functions as an extensive intracellular transport system and can help to modify proteins and lipids for use in different cellular processes. In animals, the ER forms either a smooth or a rough structure.
The smooth ER is involved in the synthesis of lipids, whereas the rough ER synthesizes and modifies proteins and contains ribosomes which are responsible for the production of protein. Both plants and animals use the ER to transport materials from one area of the cell to another.
Is ER found in all living cells?
No, ER is not found in all living cells. The endoplasmic reticulum (ER) is an organelle found in eukaryotic cells, which are cells that contain a nucleus and membrane-bound organelles. Animals, plants, fungi and some protists are examples of eukaryotic cells, while bacteria are examples of cells that are not eukaryotic and do not contain ER.
The ER is responsible for producing and transporting lipids, storing calcium and other minerals, and creating proteins for the cell. It is a complex network of interconnected sacs and tubules that form a series of connected chambers throughout the cell.
This organelle is essential for the survival of a eukaryotic cell and is usually found in large amounts in actively functioning cells.
Where is the ER found?
The Emergency Room (ER) is typically found in the most acute areas of hospitals. It is usually located in the front part of a hospital and is the primary site of care for people with life-threatening or severe injuries or illnesses.
The ER is staffed with specialized physicians and nurses specifically trained to provide immediate and comprehensive care 24 hours a day, seven days a week. Typical ERs consist of patient bays, treatment rooms, critical care suites, trauma rooms, and pharmacies.
They usually have imaging equipment such as CT and X-ray machines as well as laboratory equipment for conducting blood tests. ERs typically also have resuscitation equipment such as a defibrillator and intubation kits.
All of these facilities come together to create a well-equipped facility to handle life-threatening and severe medical conditions quickly.
Is the endoplasmic reticulum in plants or animals or bacteria?
The endoplasmic reticulum is present in almost all eukaryotic cells – which includes animals, plants, and fungi. This is because eukaryotic cells are more complex than bacterial and prokaryotic cells, and contain organelles that perform specialized jobs.
The endoplasmic reticulum can be distinguished from other membrane-bound organelles in that it is comprised of a continuous membrane network, along with attached ribosomes and various other components.
In plants, the endoplasmic reticulum is involved in the synthesis and transit of proteins, lipids, and other macromolecules. Specifically, it plays an important role in the production of cellulose and the storage of calcium ions.
In animals, the endoplasmic reticulum is involved in the synthesis of lipids, and the sorting and transport of proteins and other molecules. It is also responsible for the production of hormones, enzymes, and other substances necessary for cellular function.
In bacteria, the endoplasmic reticulum plays a role in the maintenance of proper membrane potentials as well as in the production and storage of polysaccharides, lipids, and other macromolecules.
Is the ER only found in eukaryotic cells?
No, the ER is not only found in eukaryotic cells. It is found in both eukaryotic cells and prokaryotic cells. In eukaryotes, the endoplasmic reticulum (ER) is a multi-lobed organelle composed of membrane-bound structures.
It forms a network of flattened, interconnected tubules and cisternae that extend throughout the cytoplasm. This is where proteins, lipids, and other molecules are produced and then transported out of the cell.
In prokaryotes, the ER is less organized and is composed of large infolded and vesiculated membranes. There are small sections of prokaryotic ER that have some of the same functions as those of eukaryotic ER including synthesis, modification, and transport of proteins, as well as the synthesis of lipids and carbohydrates.
In prokaryotes, the ER also has a role in cell division as well as maintaining the cell’s inner homeostasis.
Which cells are without endoplasmic reticulum?
Cells without endoplasmic reticulum (ER) include prokaryotic cells, mature erythrocytes, and plant cells that lack cell walls. Prokaryotic cells, such as bacteria, are single-celled organisms without a membrane-bound nucleus, and thus lack organelles that contain a membrane, including the ER.
Mature erythrocytes, or red blood cells, have a well-defined shape but lack organelles, which is why they have a high amount of hemoglobin for oxygen transport. Cells with a cell wall are also known to lack an ER.
A cell wall is a feature in plant cells that provides structure and protection, and helps maintain the rigidity of the cell. Since the ER is a membrane-surrounded organelle, most plant cells with an ER will lack a cell wall.
In which blood cell ER is absent?
The Endoplasmic Reticulum (ER) is an organelle found in eukaryotic cells. It is often described as a membrane network that helps facilitate the transport of molecules within the cell. It comes in two distinct types: rough and smooth.
The rough ER has ribosomes attached to its surface, which gives it a rough appearance. The smooth ER does not have ribosomes attached to its surface, and instead is responsible for lipid, steroid, and carbohydrate metabolism.
Neither of the two types of ER are present in blood cells, since their cytoplasm is full of hemoglobin, the main protein in red blood cells. As a result, red blood cells do not need to have any type of ER organelle, so neither of them are present in these cells.
Is rough ER in all cells?
No, rough ER is not present in all cells. Rough ER is only present in certain cells, such as those involved in the production of proteins. Rough ER is an organelle that contains ribosomes and is responsible for helping with the creation and processing of proteins.
It is an important part of a cell’s endoplasmic reticulum, which is the network of membranous tubes and sacs that is located in the cytoplasm. Other cells, such as those involved in reproduction and those involved in providing support functions for other organs, may not contain any rough ER at all.
Are ER in prokaryotic and eukaryotic cells?
Yes, ER or endoplasmic reticulum can be found in both prokaryotic and eukaryotic cells. In prokaryotes, ER is a single continuous membrane, often described as a ‘loop’, that separates the outer membrane from the cytoplasm.
In eukaryotes, ER is composed of multiple, interconnected, regularly structured, flattened and tube-like membranes, which form distinct components of the endomembrane system. In both prokaryotic and eukaryotic cells, ER acts as a way for the cell to transport molecules and for it to form specific proteins and lipids that are needed for proper cell function.
