A contact lens is a lens placed on the cornea of the eye.
Importance of buffers in contact lens products:
Buffers: They aim to keep the pH of the solutions at values between 6.6 and 7.8 in order to maintain the lens parameters and the effectiveness of the solutions. They are made by the combination of an acid and its sodium salt (phosphate and acetate for example). Borate and citrate buffers are used.
Importance of isotonicity in contact lens products:
The solution composed by isotonic saline solution.
Isotonia is expressed by osmolarity or cryoscopic lowering
- 0.236 to 0.446 mOsmoles / l (increases during the day)
- If the osmolarity of the mixture is different from that of the tears, it causes discomfort and irritation
• Increased tear secretion
• Increase the blink frequency
- If hypotonia, entry of water to the epithelial cells, if hypertonia: inverse
- Osmolarity restored 1 or 2 minutes after instillation
Answer:
This is the diffusion (loss of water vapor) from the stomata (most cases) of a plant to its external environment.
It involves movement of water vapor down the water potential gradients; that is ; from higher water potential inside the leaf to lower water potential in the surrounding environments.
its cools the plant’s internal temperature as water vapour conveys heat out of plants' cells.
The term phenotype refers to the observable characteristic of an organism or an individual. This may come in terms of development, behavior, or appearance. From the choice above, the phenotype is "having freckles". Thus, the answer is letter C.
Answer:
The offspring will have brown hair(Hh)
Explanation:
The offspring will have brown hair(Hh) because of HH and Hh
