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What organelle manufactures proteins?
The Rough ER produces secretory proteins. Their pathway starts in the Rough ER, then the Golgi Apparatus and they are then packaged and transported outside the cell. Secretory proteins are made on bound ribosomes(ribosomes that don't float freely in the cytoplasm)... hope that helped
What ha small bumps located on portions of the endoplasmic reticulum?
Any cell that is currently manufacturing proteins. The bumps are ribosomes - protein factories - having attached to the ER after latching onto the mRNA.
What organelle has ribosomes attached to it's surface?
Ribosomes can be attached to endoplasmic reticulum, and when ribosomes are attached, it is called rough endoplasmic reticulum.
Is the endoplasmic reticulum an organelle?
Yes, the rough endoplasmic reticulum produces secretory proteins also known as enzymes. Secretory proteins means that these proteins are made for secretion or delivery outside the cell and into the body.
What is the normal pathway a cell uses to make and release proteins?
The normal pathway for a cell to make and release proteins involves transcription of DNA to mRNA in the cell nucleus, then translation of mRNA into protein by ribosomes in the cytoplasm. The synthesized protein is then folded and modified in the endoplasmic reticulum, processed in the Golgi apparatus, and finally transported in vesicles to be released from the cell.
What is the pathway of proteins after they have been made in the ribosomes?
Proteins are then folded, sometimes in chaperonins to prevent misfolding, and then transported using the endoplasmic reticulum to where it should go. Specifically, the protein is inside a vesicle that transports it to the golgi apparatus before off to its final destination.
Which organelle serves as the transportation system in the cell?
The endoplasmic reticulum (ER) serves as the transportation system in the cell. It is responsible for synthesizing proteins and lipids, and acts as a pathway for these molecules to move throughout the cell.
What is the normal pathway a cell uses to make or release proteins?
The normal pathway for a cell to make and release proteins begins in the nucleus, where DNA is transcribed into messenger RNA (mRNA). The mRNA then travels to the ribosomes in the cytoplasm, where it is translated into a polypeptide chain, forming a protein. After synthesis, proteins may undergo post-translational modifications in the endoplasmic reticulum and Golgi apparatus before being packaged into vesicles for secretion outside the cell via exocytosis.
What are the three pathways for proteins leaving the Golgi apparatus?
The three pathways for proteins leaving the Golgi apparatus are the constitutive secretory pathway, the regulated secretory pathway, and the lysosomal pathway. In the constitutive secretory pathway, proteins are continuously transported and secreted from the Golgi apparatus. The regulated secretory pathway involves storage of proteins in secretory vesicles until a signal triggers their release. The lysosomal pathway directs proteins to lysosomes for degradation.
What is the role of protein kinase in a signal transduction pathway?
Protein kinase plays a crucial role in a signal transduction pathway by transferring phosphate groups from ATP to proteins, which activates or deactivates them. This process helps relay signals within cells and regulate various cellular functions.
What contains the genes for the proteins needed for a specific metabolic pathway?
The genes for the proteins needed for a specific metabolic pathway are contained within the DNA of an organism's genome. These genes encode for enzymes or other proteins that catalyze the various steps of the pathway, allowing the organism to carry out the metabolic process.
Why does the salivary gland have more rough endoplasmic reticulum?
Saliva contains many different kinds of proteins. The endoplasmic reticulum functions as a processing center for proteins. mRNA is translated to proteins on either free ribosomes or ribosomes bound to the ER, the polypeptide enters the ER where it is processed and folded correctly. It then exits and is packaged into vesicles by the Golgi apparatus. These vesicles are then released to the outside of the cell via the secretory pathway. Since the salivary gland must secrete more proteins than other cells, it makes sense that it would need more ER.
