How do the skin proteins—keratin, melanin, elastin, and collagen—each contribute to our physical identity? how about the dermal papillae?

Skin is the largest organ of our body and it contains a lot of immune barriers that protects the pathogens form entering the skin. Majorly the nature of skin also helps in the external appearance of a person and also denotes age.

The skin protein such as keratin, melanin, elastin, and collagen are extracellular matrix proteins that plays a major role in maintaining the elasticity and texture of the skin. The dermal papillae is the region that  is present in the outer most layer of the skin that helps in the formation of hair follicles.

because the asteroid belt is between the mars and jupiter orbits, it is around 2.2 to 3.2 astronomical units (au) from the sun – which is approximately 329,115,316 to 478,713,186 km. the average distance between objects is a massive 600,000 miles.

explanation:

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.