Answer:
A <u><em>receptor</em></u> is a protein that recognizes and responds to a signal.
Explanation:
A receptor is a protein molecule present on the cells on which the signalling molecules can bind and generate a physiological response. Some receptor molecules can also respond to Sun and light. Each type of cell has specific receptors molecules and hence can respond to specific signals. The receptor molecules hence tend to receive signals for a cell. Molecules such as hormones bind to the receptors.
<span>The </span>function of the valves<span> in the peripheral </span>veins<span> is to ensure that the overall movement of blood in the </span>veins<span> is in the right direction, toward the heart. This is especially important in the </span>legs<span>, where the blood must flow a relatively long distance against gravity. </span>
<span>Her intestinal contents became hypertonic solution to her blood. Her blood became hypotonic solution to her intestinal contents. In hypertonic solution the total substance concentration of all dissolved solute is greater than the concentration in a cell. In hypotonic solution the substance concentration of all dissolved solute is less than that of a cell.</span>
False. Pure substances that cannot be broken down into simpler substances by ordinary chemical means are called Elements.
Blood test will be great to do and just know what infections you doing before you give the blood test.
