Collagen
which is a protein that makes the skin waterproof
Keratinocytes
Epidermal cells undergo a process called keratinization to produce nails. During keratinization, the epidermal cells in the nail matrix produce keratin, a tough protein that forms the structure of the nail plate. As these cells mature and move upwards, they become tightly packed and eventually form the hardened nail plate that we see.
Merkel cells compose about 8% of the epidermal cells. These specialized cells are found in the deepest part of the epidermis and are involved in the sensation of touch.
The epidermal cells of an onion are located on the outermost layer of the onion bulb, forming a protective barrier.
Keratin
which is a protein that makes the skin waterproof
It is called Keratinocyte, which is in the outermost layer of the epidermis.
The tough protective protein found in epidermal cells is called keratin. Keratin helps to provide strength and structure to the skin, hair, and nails.
Melanocytes (melano-=black) these cells also produce granules which secrete a lipid-rich product that helps waterproof the skin. Melanocytes comprise about 8% if the epidermal cells and produce and secrete the pigment melanin.
The strands of protein are called keratin. As epidermal cells move towards the surface and develop, they fill with keratin, creating a tough and protective barrier on the skin.
Keratinocytes
Melanocytes, which produce melanin for skin pigmentation, are found in human epidermal cells but not in leaf epidermal cells. Additionally, human epidermal cells contain structures like Langerhans cells for immune response, which are not present in leaf epidermal cells.
they produce a fibrous protein that gives the skin its protective properties
The plant cell responsible for secreting a waxy cuticle is called an epidermal cell, specifically the epidermal cells on aerial parts of the plant. These cells produce a cutin-based cuticle, which serves as a protective barrier against water loss and pathogens. The cuticle helps maintain moisture within the plant while providing a waterproof layer that prevents excessive evaporation.
No, epidermal cells from petunia do not stain with phloroglucinol. Phloroglucinol is typically used to stain lignin in plant tissues, not epidermal cells. The stain mainly reacts with lignin, which is absent in the epidermal cells.
Epidermal keratinocytes are cells that accumulate protein in the epidermis. These cells produce and store keratin, a durable protein that helps form the structure of the skin and protect it from damage. Keratinocytes are the most abundant cells in the epidermis and play a crucial role in maintaining skin integrity.