Answer:
Letter A. G-protein coupled receptor
Explanation:
G protein-coupled receptors are a large protein family of transmembrane receptors that pick up extracellular signals and activate signal transduction pathways within the cell. They start this transduction through a chain of events triggered by phosphorylation.
In this question, we may be confused by the options that involve protein kinase, but we have to consider only cell surface receptors, as the request in question.
Answer:
A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division.
Explanation:
hope this is what you meant :)
Answer:
...make up the <em>atom</em><em>.</em>
2 or more atoms make up a <em>molecule</em><em>. </em>
Molecules form together to make <em> </em><em>organelles</em><em>.</em><em> </em>
...unit of life, <em>the</em><em> </em><em>cell</em><em>.</em><em> </em>
...like cells performing a similar function, <em>tissues</em><em>.</em>
...tissue types together are called <em>organs</em><em>.</em><em> </em>
In <em>systems</em><em>,</em><em> </em>several organs...
A complete single, <em>organism</em><em> </em>represents...
Tapping on the patellar tendon stretches<span> receptors called the </span>muscle<span> spindles in the</span>quadriceps muscle group<span> of the anterior thigh. This stimulus evokes a rapid motor</span>reflex<span> to </span>contract<span> the </span>quadriceps<span> and shorten the </span><span>muscles</span>
The right answer is Filtration.
A water filter is composed of a filtration system that aims to separate the water from the solid particles (residues) by passing it through a porous medium, which allows only the liquids and the finer solid particles to pass through. as the filter holes (porosity). The water that comes out of this filtration system is rid of solid particles larger than the pores of the filter.
Some water filters are designed to make drinking water (very fine filtration, less than the size of a microbe).