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mario62 [17]
3 years ago
9

Which of the following statements comparing respiration in fish and in mammals is correct?

Biology
1 answer:
levacccp [35]3 years ago
6 0

Answer: The following statements <em>comparing respiration in fish and in mammals</em> is correct:

  • The movement of the respiratory medium in mammals is bidirectional, but in fish it is unidirectional.

Explanation:

<u>Breathing </u>is the process by which living beings <em>exchange gases</em> with the external environment. It consists of the <u>entry of oxygen</u> into the body of a living being and the <u>exit of carbon dioxide</u> from it .

Active ventilation occurs if the animal produces the currents (of air or water) that flow to and from its respiratory membranes. It can be :

  • Unidirectional. (air or water is pumped onto the respiratory membrane in only one direction).
  • Bidirectional. (air or water is transported to the respiratory membrane and moves away from it through the same route like in the mammals).

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Answer:

Fossil Evidence and Structural evidence proves to support the theory of evolution because fossil evidence shows how animals looked like a few hundreds to thousands of years ago, and structural evidence shows how an animal can change from a land creature to a sea creator such as a whale starting from Indohyus to becoming a whale as it is now.

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3 years ago
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frosja888 [35]

Answer:

Please find the explanation below

Explanation:

Sodium (Na) and Chlorine (Cl) are two electrolytes that play important role in the absorption of water and nutrients in the small intestine. However, as mentioned in the question, the release of sodium and chlorine would lead to a loss of water in the intestines. This is because of the OSMOTIC phenomenon.

Osmosis is the movement of water molecules from a region of high concentration of water/low concentration of solute to a region of low concentration of water/high concentration of solute via a semipermeable membrane. In this case, the Na+ and Cl- ions serve as the solutes, which when released out of the intestine causes the solution in the intestines to be HYPOTONIC compared to the intestinal environment. This causes an OSMOTIC GRADIENT.

This osmotic gradient i.e. difference in concentration provokes osmotic flow of water from the intestines, which has a low solute/high water concentration, to the outside of the intestines, which has a high solute/low water concentration. Hence, water is lost from the intestine because the solute concentration becomes low when sodium and chlorine ions are released.

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Time._______________
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Climate is the relative temperature of a region over time.

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1)The job a cell does or performs is called its?
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Function

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