CELL STRUCTURES AND FUNCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hypertonic setting:the amoeba shrivels up as water in the amoeba moves across it’s semi-permeable membrane into the jar of water.
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Hypotonic setting:the amoeba swells up as water in the jar moves across the amoeba’s semi-permeable membrane into the amoeba’s body.
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Isotonic setting:nothing happens as the concentration of the freshwater in the jar is equal to the concentration of freshwater in the amoeba’s body
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None of the above
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Detailed explanation-1: -Timmy places a freshwater amoeba on a wet mount slide with freshwater. Timmy examines the amoeba using a compound microscope using high power. What happens to the amoeba body? Hypertonic setting: the amoeba shrivels up as water in the amoeba moves across it’s semi-permeable membrane into the jar of water.
Detailed explanation-2: -Osmoregulation in unicellular freshwater organisms like amoebas and paramecia involves an organelle called the contractile vacuole, which collects excess water as it accumulates in the cell and pumps it out.
Detailed explanation-3: -The plasma membrane is the border between the interior and exterior of a cell. As such, it controls passage of various molecules-including sugars, amino acids, ions, and water-into and out of the cell.
Detailed explanation-4: -The cytoplasm is the part of the cell outside the nucleus. The interior of a prokaryotic cell, which lacks a nucleus, is also called the cytoplasm. Eukaryotic cells also have many specialized structures that are called organelles, which means “little organs.”
Detailed explanation-5: -The eukaryotic cell has two major parts: the nucleus and the cytoplasm. cytoplasm-fluid portion of the cell outside the nucleus.-Prokaryotic cells have cytoplasm too.