D. It allows a variety of substances to dissolve in and around cells.
Explanation:
The shell of hydration is important to life because it allows a broad range of substances to dissolve in and around the cells.
- The shell of hydration allow for water to dissolve a wide range of substances and disperse them uniformly in it.
- Water serves a solvent capable of dissolving a wide range of substances because it forms a hydration shell round them.
- This allow for materials to be in solution around the cell.
- Diffusion and osmosis can readily now take place.
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Answer:
microscopic
multicellular
have shapes that include shpere, rod, and spiral
nuclei and membrane bound organelle
Answer:
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules.
To create ATP and NADPH to be used in the calvin cycle.
Explanation:
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One of the observable changes of a chemical change is the change in color. So, yes, leaves changing color is a chemical changes. This is brought about by biochemical reactions of the plant. The plant is composed of different pigments like chlorophyll, carotenoids and anthocyanins. The dominant one is chlorophyll which gives leaves its green characteristic cholor. The chlorophyll is abundant in plants because it is responsible for the process of photosynthesis. But when the season changes to longer nights and less sunlight, the chlorophyll cannot be used. So, it spends it reserves through other pigments. Hence, it changes color. A yellow leaf has dominant caretonoid pigment.