Answer:
True
Explanation:
The epidermis is the outermost layer of the skin, being formed by epithelial tissue. The epidermis is made up of five layers: Stratum corneum, lucid stratum, granular stratum, spinous stratum and stratum basale.
Each layer has specific functions and characteristics:
- Stratum corneum: This is the outermost layer of the epidermis, being formed by dead cells, without nuclei and flattened. The cells have a large amount of keratin and are continually flaking.
- Lucid stratum: Commonly more evident in thick skin (palms and soles), but in regions of the body where the skin is very thin it is not possible to notice its presence. It consists of a layer of flat, eosinophilic and translucent cells.
- Granular stratum: Consists of 3 to 5 layers of flattened polygonal cells with central nucleus and accumulated cytoplasm of basophil granules (keratin-hyaline granules), which will give rise to keratin.
- Spinous stratum: Consists of 5 to 10 layers of flattened cuboid cells with a central nucleus. The cells of this stratum have cytoplasmic projections with keratin filaments, which hold the cells together due to the presence of desmosomes. This whole arrangement gives a "Thorn" aspect to this stratum.
- Stratum basale: This is the <u>germ</u> <u>layer</u>, the deepest layer of the epidermis and in contact with the dermis. This layer is responsible for epidermal renewal, presenting intense mitotic activity. The produced keratinocytes are constantly pushed to the upper layers and increase their keratin production. It takes up to 26 days for a basal cell to reach the stratum corneum, at which point it matures.
The molecule that does not enter the cell via facilitated diffusion is :
( A ) Fats
<h3>Facilitated diffusion</h3>
Facilitated diffusion is a type of spontaneous transport system ( passive ) in which charged and polar molecules such as carbohydrates, Amino acids, Nucleotides and ions move across a biological membrane. with the aid of a specific transmembrane integral proteins while
Fats ( fatty acid ) enters the enterocyte through simple diffusion process via the plasma membrane.
Hence we can conclude that The molecule that does not enter the cell via facilitated diffusion is Fats.
Learn more about Facilitated diffusion : brainly.com/question/13846065
Answer:
Wilting point
Explanation:
Wilting point is defined as the minimum amount of water in the soil that the plant requires not to wilt. If the soil water content decreases to this or any lower point a plant wilts and can no longer recover its turgidity when placed in a saturated atmosphere for 12 hours.
Just like in humans, radioactive material can damage plant tissues as well as inhibit growth. mutations are possible due to damage caused to the DNA. radioactive material in soil can prevent nutrient from being taken in by plants, causing it to be infertile.
Answer:
The frog belongs to the class amphibia, which live both on water and land.
Explanation:
Frogs spend part of their lives underwater and part on land.
