Which of the following substances do animal cells contain? chitin cartilage cellulose collagen

Collagen  is a substance contained by animal cells.

Explanation:

An exclusive substance of animal cell, the collagen is constructed by amino acids like- Proline, glycine, arginine etc. It is present in the connective tissues and flesh of animals. It can be locate in the skin tissue that is connective and gives it elasticity and renews it constantly.

It has major portion of body proteins in it and it helps in strengthening the structure of body and skin. It can also be seen in the tissues of muscle, in the vessels of blood, kidney etc. It keeps the tissues and cells bound together.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.