Answer:
The answer to these questions are the following:
1. sucrose solution (higher concentration of water molecules in the onion cells) >> red onion cells will shrink >> smaller diameter
2. distilled water (higher concentration of water molecules in the surrounding solution) >> red onion cells will become turgid >> higher diameter
Osmosis refers to the movement of a solvent (usually water molecules) across semipermeable biological membranes, which occurs from a region of higher concentration to a region of lower concentration. There are three classes of solutions that have different effects on cells due to the process of osmosis:
1. In a hypotonic solution, the cells will become turgid
2. In an isotonic solution, the cells will become flaccid.
3. In a hypertonic solution, the cells will shrink (plasmolysis)
When plant cells are placed into a hypertonic solution where there is a greater concentration of solute outside the cells (as in this case sucrose solution), water molecules will move from inside the cells to outside the cells, thereby cells will shrink due to water loss
When plant cells are placed into a hypotonic solution that is diluted in comparison to the content of the cell (as in this case plant cells placed in distilled water) water molecules will move from outside the cells to inside the cells, thereby cells will become turgid.
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The correct answer to this question is a. Animals that rely on the sea ice for survival may become extinct as their habitat disappears. This best predicts an outcome of this global climate change in an arctic ecosystem. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
Answer;
A. brain's use of incoming signals to construct perceptions
Explanation;
Bottom-up processing involves processing information by starting with the individual elements of a visual stimulus and gradually building up a final representation and interpretation.
The evidence of bottom-down processing by Hubel and Wiesel showed that we have neurons that pick up specific elements of a visual stimulus and then they are assembled into a more complex form.
Bacteria that lives in cold water could die off, causing the ocean to pollute its self with no natural way of cleaning it.
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