Answer:
keratinocytes
Explanation:
The skin contains various types of cells like melanocytes, keratinocytes and Langerhans cells. The Keratinocytes constitute about 90% of the human skin and are mostly present in the basal skin.
The keratinocytes produce keratin protein which protects the skin and some keratinocytes contain keratohyalin granules which are filled with cysteine-rich and histidine-rich proteins. The keratin and these granules make the skin waterproof.
Thus, keratinocytes are the correct answer.
1) cells
2) tissues
3) organs
4) organ systems
5) organisms
Germ cells contain a complete set of 46 chromosomes (23 maternal chromosomes and 23 paternal chromosomes). By the end of meiosis, the resulting reproductive cells, or gametes, each have 23 genetically unique chromosomes. The overall process of meiosis produces four daughter cells from one single parent cell
B
The net result of excretion of H+ in the urine is the __conversion of CO₂ to H₂CO₃__ within the blood.
Explanation:
Excretion of H+ ions from the blood via urine means decreasing the H+ content in the blood. This consequently means the blood pH rises ad becomes more basic (remember H+ ions are responsible for acidity for a solution). For the body to maintain the homeostatic pH of between 7.35 and 7.45, the carbonic anhydrase activity will increase hence dissolving more CO₂ into the blood plasma to form carbonic acid (H₂CO₃). Carbonic acid dissociated fast into H⁺ and HCO₃⁻. The H+ from the dissociation replenishes the H⁺ to the right concentration.
Learn More;
For more on blood pH check out;
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<em>Communicating with other cells</em>
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