identifying simlanities and differences between passive transport and active tra
ID: 3521974 • Letter: I
Question
identifying simlanities and differences between passive transport and active transport Passive Transport Active Transport What drives the movement of the molecules across the plasma membrane? Do the molecules move with or against the concentration gradient? What size are the molecules that are moved across the plasma membrane? 5. Recall that a cell needs to maintain homeostasis to perform its functions. f a cell has a higher concentration of substances in the cytoplasm, which direction will water move? How can a cell continue to maintain homeostasis if the concentration of water fluctuates? 6. Define endocytosis. 7. Describe the steps in endocytosis from the following series of ilustrations. 7a. Describe this step of endocytosis. 7b. Describe this step of endocytosis. Particles 7c. Describe the final step of endocytosis. EnzymesExplanation / Answer
Answer 4.
Passive. Active
Answer 5. If the concentration of substances is high in the cytoplasm it means that solute is high than the solvent means water. In this case, 2 conditions are possible:
The cell will maintain homeostatic condition by Exosmosis, if water concentration increases in the cell than the outside. If water concentration remains same in cell inside and outside then no movement occurs, because in isotonic solutions solute and solvent concentration is same as cell inside and cell outside.
Answer 6. Endo means in and cytosis means cell. Thus, when something is taken inside the cell it is known as endocytosis. Amoeba takes food through endocytosis and WBC in our body engulf pathogens through this process. In terms of food, endocytosis can be of 2 types: phagocytosis, when solid food is engulfed and pinocytosis when liquid food is engulfed.
Answer 7a. In this the food particles accumulate near the plasma membrane, as a result invagination process starts to form the vacuole.
Answer 7b. The invagination continues further, finally food vacuole is formed in the cytoplasm of the cell.
Answer 7c. Interaction will occur between the food vacuole and the another vacuole containing the enzymes. Plasma membrane will dissolve at the point of contact, enzyme mix with the food, digestion occurs and ultimately waste will be thrown out of the cell by a process of exocytosis.
What drives.. the concentration gradient drives the movement as it occurs down the concentration gradient. It requires energy, as it occurs up the concentration gradient. Do the molecules.. with the concentration gradient, means high to low concentration against the concentration gradient, means from low to high What size.. small, hydrophobic molecules show passive transport across the plasma membrane ions, glucose, amino acids require ATP as energy to move across the plasma membrane with active transportRelated Questions
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