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Luden [163]
3 years ago
10

Describe one major change that occurred in the development of the modern atomic model.

Biology
1 answer:
NNADVOKAT [17]3 years ago
5 0

Answer:

The one major change that occurred was the placement and organization of the electron.

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Lesson 01.04 Properties of Water
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Answer:

1= In living organisms cells are composed of water or we can say that water is one of the important constituent of cells.

2= Hydrogen bonding import man properties to the water such as cohesion, high heat of vaporization, high heat capacity etc.

3= Because of high polarity, all polar substance get dissolve and make it universal solvent.

Explanation:

Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute. In simplest form it is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.

Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.

Hydrogen bond:

The hydrogen bond is the attraction between the toms which already take part in the other chemical bons. The one atom is hydrogen while other may be oxygen, nitrogen or fluorine.

The hydrogen bonding in water import man y properties in it such cohesion, high heat of vaporization, high heat capacity etc. The hydrogen bond hold the water molecules together.

Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.

Example:

when we stir the sodium chloride into water the cation Na⁺ ions are surrounded by the negative end of water i.e oxygen and anion Cl⁻ is surrounded by the positive end of water i.e hydrogen and in this way all salt is get dissolved.

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Which of the following best describes the function of enzymes in biological systems?
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B- Enzymes act as catalysts to speed up chemical reactions
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Which organelle stores water and helps to maintain the plant cell shape?
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(D) H Vacuole

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The vacuole is the organelle of the plant which contains water reserves of the plant and essential minerals required by the plant to grow. It also helps the plant to maintain its structure and provides rigidity

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Example of how wildfires lead to secondary succession
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Explanation: a good example of how wildfires lead to secondary succession is in a oak and hickery forests and this is because wildfires will mostly burn out the vegetation and kill those animals however their nutrients would turn to ash

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