The solid protein fibers, which form a mesh over wounds, are called "fibrin".
fabric is a solid because it stays together
Fur is a solid. It is made up of tightly packed fibers that give it its fluffy texture.
Keratin is produced by special cells in the skin called keratinocytes. These cells synthesize keratin protein from amino acids, which are the building blocks of protein. The keratin proteins are then assembled into fibers that provide structural support and protection to the skin, hair, and nails.
There is a mistake in your spelling - paper is a solid material. It is made from wood pulp and other fibers that are pressed and dried into thin sheets.
Solid nitrogen is called "nitrogen ice" or "nitrogen snow".
Collagen
Long fibers of DNA and protein are called chromatin. Chromatin is the material that makes up chromosomes in eukaryotic cells and is composed of DNA wrapped around histone proteins.
Cytoskeleton.
microtubules
These are called kinetochore fibers. They are microtubules that attach to the kinetochore, a protein structure on the centromere of the chromosome, helping to move the chromosomes during cell division.
Spindle fibers are made of microtubules, which are composed of the protein tubulin. These microtubules play a critical role in the segregation of chromosomes during cell division.
MicrofilamentsThere are two types of proteins that make up the cytoskeleton. Microtubules and microfilaments. Since you asked what the "fibers" are I assume you are talking about the microfilaments.
Elastic fibers are primarily composed of a protein called elastin, which provides elasticity and resilience to tissues. They also contain microfibrils made of the protein fibrillin, which helps to organize elastin and maintain the structural integrity of elastic fibers. Together, these proteins allow elastic fibers to stretch and recoil, making them essential for the function of various tissues, such as skin, lungs, and blood vessels.
Myelin fibers themselves do not contain collagen. Myelin is primarily composed of lipids and proteins, specifically a type of protein called myelin basic protein and other associated proteins that help in its structure and function. Collagen is a structural protein found in connective tissues, but it is not a component of the myelin sheath surrounding nerve fibers.
The individual protein structure that helps move the chromosomes apart during mitosis is called a microtubule spindle fiber. These fibers form the mitotic spindle, which helps align and separate the chromosomes during cell division.
Chondrocyte
The flexible protein fibers that make up a sponge are called spongin. The hard, tiny spikes found in sponges are called spicules, and they are made of silica or calcium carbonate.