Lignin holds plant cells together.
The nucleus holds the cells genetic material in eukaryotes. The genome of eukaryotes is sequestered to a membrane bound organelle called the nucleus. The nucleus is the site of replication and transcription.
Phloem
In cells they are in DNA. In virus they are in DNA or RNA
Animal cells secrete a sticky coat called the extracellular matrix. This layer holds cells together in tissues, and it can also have protective and supportive functions.
It is a protein that holds cells together to form tissue.
The sediments in sedimentary rock are held together by precipitated cementing material which is commonly silicate, carbonate, clay, or iron in composition.
Nucleus
The nucleus holds the cells genetic material in eukaryotes. The genome of eukaryotes is sequestered to a membrane bound organelle called the nucleus. The nucleus is the site of replication and transcription.
The element iron is needed to make hemoglobin, which holds the oxygen that the cells carry to all parts of the body.
Pottant is the material, usually some form of silicone, that holds crystalline solar cells in place inside their modules.
The nucleus holds the cells genetic material in eukaryotes. The genome of eukaryotes is sequestered to a membrane bound organelle called the nucleus. The nucleus is the site of replication and transcription.
Lignin is the material in wood that holds it's fibers together.
Chromosomes are Long pieces of DNA found in the nucleus of cells. DNA is The material that holds genes. It is considered the building block of the human body. Chromosomes always appear in pairs in cells apart from the sperm and egg.
The cell membrane.
DNA
The 'cement' in clastic sedimentary rock is most often clay, iron, carbonate, or silicate minerals.
These cells do not contain chlorophyll