Examlex
For each of the following sentences, select the best word or phrase from the list below to fill in the blanks.Not all words or phrases will be used; each word or phrase should be used only once.
An extracellular signal molecule can act to change a cell's behavior by acting through cell-surface __________ that control intracellular signaling proteins.These intracellular signaling proteins ultimately change the activity of __________ proteins that bring about cell responses.Intracellular signaling proteins can __________ the signal received to evoke a strong response from just a few extracellular signal molecules.A cell that receives more than one extracellular signal at the same time can __________ this information using intracellular signaling proteins.__________ proteins can act as molecular switches, letting a cell know that a signal has been received.Enzymes that phosphorylate proteins, termed __________, can also serve as molecular switches; the actions of these enzymes are countered by the activity of __________.
Human-Made
Created, caused, or influenced by humans rather than occurring in nature; synthetic or artificial.
Crystalline Solid
A solid material whose constituents, such as atoms, molecules, or ions, are arranged in an orderly repeating pattern.
Volcanic Glass
A type of rock that forms when lava cools too quickly for crystals to form, resulting in a smooth, glassy texture.
Crystals
Solid materials whose atoms are arranged in a highly ordered, repeating pattern extending in all three spatial dimensions.
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