D, convection. It causes less dense material to rise and denser material to sink.
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.
Learn more about this topic here:
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Energy is transfered from a molecule of sugar to atp by cellular respiration
Answer:
Fact: a thing that is known or proved to be true.
Hypothesis: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Theory:a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Law: a statement of fact, deduced from observation, to the effect that a particular natural or scientific phenomenon always occurs if certain conditions are present.
Explanation:
Note: these are not my words, credits to google search.
After collecting specimens from many ares of the world Darwin noticed some similarities in them.
