THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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uses ATP as an energy source
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can move solutes up a gradient
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requires the cell to expend energy
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all of these
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Detailed explanation-1: -Phagocytosis of bacteria by Macrophages. Movement of Ca2+ ions out of cardiac muscle cells. Transportation of amino acids across the intestinal lining in the human gut. Secretion of proteins like enzymes, peptide hormones, and antibodies from different cells.
Detailed explanation-2: -There are three main active transport methods-ion pumps, exocytosis and endocytosis.
Detailed explanation-3: -Detailed Solution. Active Transport involves the transportation of a substance from a low concentration to a high concentration, against the diffusion gradient. The use of energy released through respiration helps in making the process sufficiently exergonic.
Detailed explanation-4: -Active transport is usually associated with accumulating high concentrations of molecules that the cell needs, such as ions, glucose and amino acids. Examples of active transport include the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.