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lozanna [386]
2 years ago
5

Which movement of substances through a cell membrane against a concentration gradient requires energy?

Biology
1 answer:
Alja [10]2 years ago
3 0

Answer:active transport as it's difinition state

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I believe that would be an open system.
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The A159E mutation causes an A amino acid to be replaced with an E amino acid (their structures are shown here). What effects do
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Due to hydrophilic nature of E amino acid, it will make it self to be exposed on protein surface and will disrupt the structure and potentially the function of troponin.

Explanation:

Since the E amino acid is hydrophilic, it will try to be exposed on the surface of the protein and thus will disrupt the tertiary structure and potentially the function of troponin.

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Two-component regulatory systems rely on a balance of phosphorylation and dephosphorylation of sensor kinases and response regul
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Answer:

The correct answer is the first statement.

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A fundamental stimulus-response coupling mechanism that helps various species to react and sense different modifications taking place in various distinct environmental circumstances is known as a two-component regulatory system. Though this system is found in almost all the domains of life, however, it is generally witnessed in species like bacteria, mainly in the Gram-negative and cyanobacteria.  

In case, if the response regulator turns completely phosphorylated because of the absence of phosphatase activity, the cell would become insensitive towards the environmental stimulus. This generally happens as the cell will lose its tendency to sustain the response cycle because of the imbalance in the dephosphorylation and phosphorylation system that helps in sustaining the response of the cell towards a specific environmental stimulus.  

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