Answer:
True
Guard cells close openings in the leaves slowing down water loss.
Ans.
Cell differentiation is defined as a process, by which less specialized cells, such as embryonic cells become more specialized. The process of cell differentiation is regulated by gene expression. Gene expression involves a specific group of genes that are turned on (expressed) or turn off (repressed) and dictates a cell's function.
A fertilized egg represents a single, non-specialized cell that develops into a complex, multicellular organism by cell differentiation. Thus, a adult rabbit looks so much different as compared to a single fertilized cell or zygote, due to cell differentiation, which is regulated by gene expression.
The size of endotracheal tube that should be used to intubate a new born with an estimated gestational age of 26 weeks is 2.5 mm (internal diameter). An endotracheal tube serves as open passage through the upper airway. The purpose of endotracheal intubation is to permit air to pass freely to and from the lungs inorder to ventrate the lungs.
The body needs to maintain the amount of oxygen that reaches our cells. If we exercise a lot, our breathing rate increases. More oxygen enables our cells to <span>more quickly respire aerobically, so that our muscles can contract more rapidly.
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The Sympathetic Nervous System, part of the Autonomic Nervous System, regulates the fuctioning of the Lymphoid organs, which are in charge of producing the main cells for the Immune System. When a person is stressed, it causes nervous tension in the body, and it affects the signals given by the Nervous System to the body. So when the Lymphoid organs receive a distorted signal from a stressed person, it affects the production and functioning of immune cells, making our Immune system innefective against common infections.
