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DochEvi [55]
3 years ago
10

Which sentences describe ponds and lakes?

Biology
1 answer:
Ipatiy [6.2K]3 years ago
4 0

Answer:

- These are water bodies formed from melting glaciers

- However, their size can vary from a few square meters to thousands of square kilometers

- They can be seasonal, existing for a few months or exist for hundreds of years or more

Explanation:

The lakes and the ponds are freshwater bodies of water. They can be formed in numerous different ways, from melting of glaciers, rivers flowing into closed valleys, changes in the geography of a space, increased amounts of precipitation. They can vary in size, and there are ponds and lakes that are very small, just few square meters, or to be thousands of square kilometers in size. Some of the lakes and ponds tend to be seasonal, unlike the majority that are existing throughout the whole year, and the reasons for this are the climate and the manner in which they form. Some lakes can be very old, millions of years of age, like the Ohrid Lake in Macedonia, which is also the most important lake in the world from biogeographical stance of point, and it is considered as one of the most attractive ones in the world as well.

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Glycolysis produces pyruvate as a product. 

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What is produced and released when glucose and fructose combine to form sucrose?
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This very low concentration of the desired product would be unfavorable for glycolysis. In fact the reaction is coupled to ATP h
abruzzese [7]

Answer:

ΔG'° for the coupled reaction = -16.7 kJ/mol

<em>Note: The question is missing some parts. The complete question is as follows:</em>

<em>The first reaction in glycolysis is the phosphorylation of glucose: </em>

<em> Pi+glucose⟶glucose−6−phosphate+H2O </em>

<em>This is a thermodynamically unfavorable process, with ΔG∘′= +13.8kJ/mol. In a liver cell at 37 ∘C the concentrations of both phosphate and glucose are normally maintained at about 5 mM each.</em>

<em>This very low concentration of the desired product would be unfavorable for glycolysis. In fact the reaction is coupled to ATP hydrolysis to give the overall reaction: ATP + glucose → glucose-6-phosphate + ADP + H+</em>

<em>What is the ΔG'° for the coupled reaction?</em>

Explanation:

The coupling of ATP hydrolysis which is a thermodynamically favourable reaction to the phosphorylation of glucose makes it favourable. Since the two reactions constitute a sequential reaction, their standard free energy changes are additive.

For ATP hydrolysis: ATP + H₂O ---> ADP + Pi ; ΔG'°  = -30.5KJ/mol

For phosphorylation of glucose:  Pi + glucose⟶glucose−6−phosphate + H2O  ; ΔG'° = +13.8 kJ/Mol

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Therefore, ΔG'° for the coupled reaction = -16.7 kJ/mol

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