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Hormones are chemical messengers secreted into blood or extracellular fluid by one cell that affect the functioning of other cells. In very basic terms, binding of hormone to receptor triggers a cascade of reactions within the cell that affects function.
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explain why hormones in the bloodstream are able only to affect target cells/organs and not other cells/organs?
Hormones in the bloodstream are able to affect target cells/organs and not other cells/organs because of selective permeability. This means that hormones are only able to pass through the cell membrane of certain cells and organs, and not through the cell membrane of other cells and organs. The cell membrane of the target cells and organs are specialized to allow the hormones to pass through, while the cell membrane of other cells and organs are not specialized and are therefore impermeable to the hormones. This is due to the presence of receptor proteins on the cell membrane of the target cells and organs. These receptor proteins can bind to the hormones and facilitate their entry into the cell. Since these receptor proteins are not present on the cell membrane of other cells and organs, the hormones are unable to bind to them and therefore unable to cross the cell membrane. In addition, hormones can be broken down by enzymes in the bloodstream, which means they can’t reach their target cells and organs if they are exposed to the enzymes. This further ensures that hormones only affect the target cells and organs, and not other cells and organs. In summary, hormones in the bloodstream are able to affect target cells and organs and not other cells and organs because of selective permeability and the presence of receptor proteins on the cell membrane of the target cells and organs. Other cells and organs do not have these specialized receptor proteins and therefore cannot be affected by the hormones.
Chemical substances secreted by cells into the extracellular fluids that regulate the metabolic function of other cells in the body are called?
hormones
What part of a plant cell controls the activities of other cells?
The nucleus is the part of a plant cell that controls the activities of other cells. It contains the cell's genetic material, including DNA, which regulates various cellular processes and functions.
What gland signals nearly all other body cells?
The pituitary gland, often referred to as the "master gland," secretes hormones that regulate the functions of other endocrine glands in the body. These hormones control growth, metabolism, reproduction, and various other physiological processes by signaling and coordinating the activities of other glands.
Which hormone affect only certain cells?
Because they only activate target cells that have special receptors that only work when that specific hormone attaches to it.
Chemicals that travel through the bloodstream and affect the activities of other cells?
Hormones
What is a chemicals travel through the bloodstream and affect the activities of other cells?
I suppose that you think to oxygen.Oxygen is indispensable for life.
What type of cells are hormones?
Hormones are not cells but chemicals released by cells to affect changes in other cells.
How do hormones affect the activites of other cells?
It could change your behavior and other physical things.
explain why hormones in the bloodstream are able only to affect target cells/organs and not other cells/organs?
Hormones in the bloodstream are able to affect target cells/organs and not other cells/organs because of selective permeability. This means that hormones are only able to pass through the cell membrane of certain cells and organs, and not through the cell membrane of other cells and organs. The cell membrane of the target cells and organs are specialized to allow the hormones to pass through, while the cell membrane of other cells and organs are not specialized and are therefore impermeable to the hormones. This is due to the presence of receptor proteins on the cell membrane of the target cells and organs. These receptor proteins can bind to the hormones and facilitate their entry into the cell. Since these receptor proteins are not present on the cell membrane of other cells and organs, the hormones are unable to bind to them and therefore unable to cross the cell membrane. In addition, hormones can be broken down by enzymes in the bloodstream, which means they can’t reach their target cells and organs if they are exposed to the enzymes. This further ensures that hormones only affect the target cells and organs, and not other cells and organs. In summary, hormones in the bloodstream are able to affect target cells and organs and not other cells and organs because of selective permeability and the presence of receptor proteins on the cell membrane of the target cells and organs. Other cells and organs do not have these specialized receptor proteins and therefore cannot be affected by the hormones.
Why are hormones able to affect only certain cells and not other cells?
Because they only activate target cells that have special receptors that only work when that specific hormone attaches to it.
Chemical substances secreted by cells into the extracellular fluids that regulate the metabolic function of other cells in the body are called?
hormones
What part of a plant cell controls the activities of other cells?
The nucleus is the part of a plant cell that controls the activities of other cells. It contains the cell's genetic material, including DNA, which regulates various cellular processes and functions.
What are examples of sex cells?
Hormones i forgot the other ones
What gland signals nearly all other body cells?
The pituitary gland, often referred to as the "master gland," secretes hormones that regulate the functions of other endocrine glands in the body. These hormones control growth, metabolism, reproduction, and various other physiological processes by signaling and coordinating the activities of other glands.
Which hormone affect only certain cells?
Because they only activate target cells that have special receptors that only work when that specific hormone attaches to it.
What do endocrine cells secrete?
There are many hormones secreted by the endocrine system. The hypothalamus secretes releasing and inhibiting hormones that affect the production and release of hormones from other glands, mainly the pituitary gland. Here is a partial list.Growth hormoneLutiening hormoneProlactinAdrenocorticotopic hormoneAndidiuretic hormoneOxytocinThyroxineTriiodothyronineFollicle stimulating hormoneMelatoninThymosinThymopoetin
