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A signal reaches a cell mostly in the form of a signalling molecule binding to a receptor on the cell surface. This binding activates a chain of events that amplifies the signal and transfers it inside the cell. Protein kinases phosphorylate proteins and cause their activation or deactivation, or in general modify their activity. When a signalling molecule binds to a receptor, a cascade is activated and the second messengers, such as cAMP, are synthesized. cAMP molecules activate the protein kinases, which phosphorylate specific proteins and activate them.
Answer: Resources such as rocks, soil, water, and air, nonliving things that help to meet our needs. You learn that water and air are renewable resources that can be replaced quickly. You learn that soil and rocks are non-renewable and cannot be replaced quickly. Comment Below if this helped! Brainliest Would be amazing!
Answer:
The internal membrane known as the Cristae is collapsed. The folds of the inward layer or the Cristae give an expansion in the Surface Territory which gives the Mitochondrion more areas for ATP( the vitality cash) creation to happen
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A part of the definition of binary fission is "splitting in half." It is an asexual form of reproduction, one turns in to two. This is choice B.
