Answer:
Stratum basale layer of epidermis produces melanin pigment.
Explanation:
The epidermis is composed of mainly four layers. In some areas like palm and foot, they contain five layers - stratum granulosum. All the layers are avascular i.e. lack of blood vessels.
The stratum basale cell is the deep layer of the epidermis. It is a single layer made of basal cells. The basal layer produces the keratinocytes. The keratinocytes divide mitotically and migrate to the upper layers. The keratinocytes provide hardness to the nail and skin, also make the skin waterproof.
Another two types of cells are present in the stratum basale - Merkel cell and melanocyte cell. Merkel cells provide sensory stimulation to the skin. Melanocyte cell produces pigment melanin.
Melanocyte gives color to skin, hair. It spreads from stratum basale to the upper layer of the skin called stratum corneum. Melanin pigment protects the skin from the ultraviolet radiation of the sun.
C. electron transport and chemiosmosis
Chemiosmosis<span> involves movement of </span>ions<span> across a </span>semipermeable membrane<span>, down their </span>electrochemical gradient<span>. More specifically, it relates to the generation of </span>adenosine triphosphate<span> (ATP) by the movement of </span>hydrogen<span> ions across a </span>membrane<span> during </span>cellular during respiration<span> </span><span>.</span>Hydrogen ions, or protons<span>, will </span>diffuse<span> from an area of high proton concentration to an area of lower proton concentration, and an </span>electrochemical concentration gradient<span> of protons across a membrane can be harnessed to make ATP. This process is related to </span>osmosis<span>, the diffusion of </span>water<span> across a membrane, which is why it is called "chemiosmosis".</span>
Answer:
Answer:
1: Peroxisomes. 2: Proteins. 3: Mitochondria 4: Cytoskeleton 5: Nucleus 6: Ribosomes 7: centrosome 8: Lysosomes 9: Golgi Apparatus 10: Soft Endoplasmic Reticulum 11: Rough Endoplasmic Reticulum.
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Explanation:
Adipose tissue consisting mainly of fat cells (adipose cells, or adipocytes), specialized to synthesize and contain large globules of fat. It is found mainly under the skin but also between the muscles, in the intestines, around the heart, and e It is also found in the bone marrow
Answer: B. predator and prey
Explanation: Bc carnivores are the predator that hunts the herbivores or the prey