Shleiden and Theodor Schwann were the first to recognize that all plants and animals are composed of cells.
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Answer: The theory of cheek cells is used for the identification of cheek cells.
Explanation:
The cells of cheek do not have cell wall. They have a cell membrane which allows on certain molecules to pass through it. The nucleus is located centrally in the cheek cells and it stores the DNA. It can be stained with the help of the methylene blue reagent. It appears blue in color which can be observed under the microscope. The cheek cells can be isolated from the buccal cavity by using cotton buds and cotton swabs can help in isolating the cells.
Answer: food and drug administration
Explanation:
Latitude is not a factor in marine life divisions.
The primary function of the respiratory system is to supply blood with oxygen
