Corpuscle
A corpuscle is a small free-floating cell, such as a blood cell.
Serum is the cell free fluid of the blood. It makes the blood flow smooth in the arteries and veins.
Corpuscles are small particles or cells found in the body, such as red or white blood cells. They play important roles in various physiological processes, such as carrying oxygen (red blood cells) and fighting infections (white blood cells).
There are free ribosomes in a plant and animal cell.
Any cell with a nucleus will have a nuclear membrane. The nuclear membrane is just the outside of the nucleus - like the rubber on the outside of a rubber ball - that keeps your DNA in one place. Eukaryotes have nuclei, and therefore also have nuclear membranes. Prokaryotes (such as bacteria) do not have nuclei, and therefore don't have nuclear membranes. Their DNA floats free in the cell.
Proteins made on free-floating ribosomes are generally used within the cytoplasm of the cell, where they can participate in various cellular processes. These proteins may also be targeted to specific organelles within the cell or secreted outside of the cell to perform their functions.
It is a genetic adaptation; without nucleus more space for hemoglobin is free. And hemoglobin is the carrier of oxygen.
Plasma membranes isolated from a red blood cell will not be contaminated with internal cell membrane (i.e. membrane from cell organelles - small structures found within cells) because red blood cells do not contain any organelles, so there will be no 'internal membrane' to contaminate.
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Ribosomes are organelles within cells and are either bound or free. Organelles are structures inside the cells which perform specific functions. Bound ribosomes are attached to the organelle called the rough endoplasmic reticulum (rough because of the presence of the ribosomes) and there is also the smooth endoplasmic reticulum, without attached ribosomes. Ribosomes are protein producing "factories" and are abundant in cells actively involved in protein synthesis. Free ribosomes are scattered throughout the cell and the protein they produce is for usage within the cell. Much of the protein produced by the bound ribosomes is transported for use outside the cell.
The serum is a cell free fluid which forms when the blood has clotted and the thombus has separated from it.Since the blood group deciding antigens are present on the RBC's which are not present on the serum .Hence,it can be transcribed to anyone without the need of blood testing.
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