Quarks are elementary particles, and as such, they are not composed of any other particles. An individual quark is not "held together" by anything because it is an elementary particle. That said, a number of quarks are held together to form mesons (pairs of quarks) or baryons (three quarks) by what are called gluons. Use the links below to learn more about quarks and gluons.
As we understand it, the quark is an elementary particle. It makes up composite particles, but taken alone, it has no substructure. That said, the quark is not "held together" by any force as it is not, in itself, made up of other objects. If the question pertains to the force holding groups of quarks together, use the link below to learn about this idea.
The LHC ( Hadron Collider) in Switzerland has discovered a type of subatomic particle called the Xi_b Baryon, also called the cascade particle. Is is made up of either 1 up or 1 down quark and 2 heavier quarks. They have an elementary charge of either +2, +1, or -1, or they are neutral. They get the name cascade becase they decay into lighter particles through multiple decays. They are generally not very stable either.
the force of attraction that holds atoms together is a chemical bond
The residual strong force. The strong force (or color force) is what holds quarks together to form protons and neutrons. The residual strong force then holds the protons and neutrons together in the nucleus.
A Chemical Bond
The dispersion force is responsible for holding nitrogen crystals together
The strong force holds atomic nuclei together.
Gravity, the force of attraction between all masses in the universe, is the inward force that holds a star together.
All atoms have strong force. Strong force holds the universe together. Without it, we would be annihilated.
The strong nuclear force holds together protons and neutrons in the nucleus of an atom. It is one of the fundamental forces in nature that overcomes the electromagnetic repulsion between positively charged protons, binding them together in a stable nucleus.
It is generally believed that gravity holds the universe together.
It is gravity.
Gravitational force is the force which holds each galaxy together . While the rotation of hevenly bodys help then from collapsing down .BUT fact is this that the universe is expanding the closer these galaxy's are more they keep going away from each other fron this is said that universe is expandingby MK
kinatic force
The force that holds the nucleus together is the strong nuclear force. This force is mediated by particles called gluons, and it is responsible for binding protons and neutrons together in the nucleus.
Gravity! Gravity is what holds everything in the universe together.
The strong force holds the nucleus together against the repulsion between the electric charges of the protons.
The strong atomic force holds protons (and neutrons) together in the nucleus.
the force of attraction that holds atoms together is a chemical bond