ribosomes
Proteins are one of the four major biomolecules in the body. The process by which a protein is constructed in the cytoplasm of eukaryotic cells is called protein synthesis.
Ribosomes are amongst the smallest organelles in a cell with a size of about 20 nanometers. Despite its small size compared to other organelles, it constitutes of complex and large molecules of RNA and proteins, which play vital roles in the process of protein synthesis. These complex RNA and proteins are collectively referred to as ribonucleic proteins.Ribosomes are present in all the living cells including both prokaryotes and eukaryotes. However, prokaryotic and eukaryotic ribosomes differ structurally with each other. Prokaryotic ribosomes are 70S while eukaryotic ribosomes are 80S. Ribosomes are predominantly found attached to RER (rough endoplasmic reticulum) and rarely as free organelles in the cytoplasm. However, the attachment of ribosomes with RER is not permanent since the attachment is in a state of attached and detached with RER surface.
Ribosomes are the organelles that process new proteins after synthesis. The process is called translation and it uses the mRNA transcript that is produced during transcription.
The organelles necessary for photosynthesis in plants are chloroplasts. They hold the chlorophyll that is a necessary part of the process.
Organelles are structures within a cell eg nucleus, ribosomes, mitochondria and chloroplasts.Some organelles are believed to have originated by endosymbiosis. Endo means "within" and symbiosis means "living together".The idea is that eukaryotic cells (cells which make up animals, plants, fungi and protists) formed by symbiosis between prokaryotic (bacterial) cells. Some prokaryotic cells lived by engulfing and digesting other prokaryotic cells. If the engulfed cell survived inside the engulfing cell instead of being digested, a new type of cell (the eukaryotic cell) would be formed.If the engulfed cell was a photosynthetic cell it could eventually evolve into a chloroplast.If the engulfed cell was a cell which carried out aerobic respiration, it could evolve into a mitochondrion.Chloroplasts and mitochondria are the organelles which most biologists believe originated by this process of endosymbiosis.Evidence for this process is provided by similarities between these organelles and bacteria.
In eukaryotic cells proteins are made by the ribosomes.
According to scientists, organelles are specialized features within prokaryotic and eukaryotic cells that carry out specific functions. An example in eukaryotic cells, one organelle is the Golgi apparatus which sorts and process proteins. In prokaryotic cells, the Pilli is an organelle that transfers DNA.
Core organelles are found in virtually all eukaryotic cells. They carry out essential functions that are necessary for the survival of cells – harvesting energy, making new proteins, getting rid of waste and so on. Core organelles include the nucleus, mitochondria, endoplasmic reticulum and several others
Proteins are one of the four major biomolecules in the body. The process by which a protein is constructed in the cytoplasm of eukaryotic cells is called protein synthesis.
Core organelles are found in virtually all eukaryotic cells. They carry out essential functions that are necessary for the survival of cells – harvesting energy, making new proteins, getting rid of waste and so on. Core organelles include the nucleus, mitochondria, endoplasmic reticulum and several others
Translation of mRNA into a protein occurs in the ribosomes.
By a process called endosymbiosis. It involves the Eukaryotic cell engulfing a Prokaryotic cell, such as a photosynthetic organism.
Ribosomes are amongst the smallest organelles in a cell with a size of about 20 nanometers. Despite its small size compared to other organelles, it constitutes of complex and large molecules of RNA and proteins, which play vital roles in the process of protein synthesis. These complex RNA and proteins are collectively referred to as ribonucleic proteins.Ribosomes are present in all the living cells including both prokaryotes and eukaryotes. However, prokaryotic and eukaryotic ribosomes differ structurally with each other. Prokaryotic ribosomes are 70S while eukaryotic ribosomes are 80S. Ribosomes are predominantly found attached to RER (rough endoplasmic reticulum) and rarely as free organelles in the cytoplasm. However, the attachment of ribosomes with RER is not permanent since the attachment is in a state of attached and detached with RER surface.
Ribosomes are the organelles that process new proteins after synthesis. The process is called translation and it uses the mRNA transcript that is produced during transcription.
This is Transcription, and it is called mRNA
The organelles necessary for photosynthesis in plants are chloroplasts. They hold the chlorophyll that is a necessary part of the process.
Organelles are structures within a cell eg nucleus, ribosomes, mitochondria and chloroplasts.Some organelles are believed to have originated by endosymbiosis. Endo means "within" and symbiosis means "living together".The idea is that eukaryotic cells (cells which make up animals, plants, fungi and protists) formed by symbiosis between prokaryotic (bacterial) cells. Some prokaryotic cells lived by engulfing and digesting other prokaryotic cells. If the engulfed cell survived inside the engulfing cell instead of being digested, a new type of cell (the eukaryotic cell) would be formed.If the engulfed cell was a photosynthetic cell it could eventually evolve into a chloroplast.If the engulfed cell was a cell which carried out aerobic respiration, it could evolve into a mitochondrion.Chloroplasts and mitochondria are the organelles which most biologists believe originated by this process of endosymbiosis.Evidence for this process is provided by similarities between these organelles and bacteria.