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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Oxygen transfers into red blood cells through small gaps in the cell membrane from oxygen-rich environment surround the cells
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Large molecules are brought into the cell by wrapping the cell membrane around the molecules to form a vacuole.
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Water moves across the cell membrane from the side with high osmotic pressure towards the side with low osmotic pressure
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Membrane proteins provide a pathway for larger particles to move across the cell membrane and bring the cell and environment closer to equilibrium.
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Detailed explanation-1: -Endocytosis is a type of active transport that moves particles, such as large molecules, parts of cells, and even whole cells, into a cell. There are different variations of endocytosis, but all share a common characteristic: The plasma membrane of the cell invaginates, forming a pocket around the target particle.
Detailed explanation-2: -The answer is A) A substance goes from an area of low concentration to an area of high concentration, and this requires energy. Active transport involves movement of substances across a membrane by a specialized protein.
Detailed explanation-3: -Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell.
Detailed explanation-4: -Which of the following describes an example of molecular movement across a membrane through active transport? Channel proteins bind with extracellular solutes and release them inside the cell.
Detailed explanation-5: -Phagocytosis is a special form of endocytosis in which large particles such as microorganisms and dead cells are ingested via large endocytic vesicles called phagosomes.