Answer:
The correct choice is ''ion electrochemical gradients''.
Diffusion of ions across membranes through specific ion channels is driven by <u>ion electrochemical gradients</u>.
Explanation:
An electrochemical gradient can be considered as that electrical (electrostatic pressure) and chemical (diffusion) force that determine the movement of molecules and ions across the membrane. This electrochemical gradient, in addition to causing movement of substances through cell membranes, is also a type of potential energy available for the performance of different cellular activities, potential energy called membrane potential.
Answer:
<h2>consensus</h2>
Explanation:
Such type of the nucleotide sequence that is mostly present at each position is called a consensus sequence. This sequence plays an important role in the sequence alignment and some other molecular biological research and some other fields. Generally, it is made up of a small segment of the nucleotide and also considered as a conserved sequence motif because its presence is conserved on the position where it is present.
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