What toxic compounds can be found in bottled water? Where do they come from?

1 answer:

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You can find Bisphenol, Fluoride, and Phthalate. Bisphenol is found in many water bottles because it’s a chemical that is added to clear plastic.

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The temperature of four ponds was measured at 6:00 am. which of the ponds would probably have the highest dissolved oxygen conce

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<span>Answer: Pond A</span>

<span>The concentration of Oxygen in water is very important in considering the quality of water along with the other physio-chemical characteristics. Thus, oxygen concentration is inversely proportional to temperature and cooler water holds more oxygen compared to warm water. However, fish usually need more oxygen in water water.</span>

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Wetlands support a large number of animal species. Chemical weed killers are dumped into this wetland and the aquatic plants are

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Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate.

The majority of carbon dioxide is transported as part of the bicarbonate system. Carbon dioxide diffuses into red blood cells. Inside, carbonic anhydrase converts carbon dioxide into carbonic acid (H2CO3), which is subsequently hydrolyzed into bicarbonate (HCO3−) and H+. The H+ ion binds to hemoglobin in red blood cells, and bicarbonate is transported out of the red blood cells in exchange for a chloride ion. This is called the chloride shift.

Bicarbonate leaves the red blood cells and enters the blood plasma. In the lungs, bicarbonate is transported back into the red blood cells in exchange for chloride. The H+ dissociates from hemoglobin and combines with bicarbonate to form carbonic acid with the help of carbonic anhydrase, which further catalyzes the reaction to convert carbonic acid back into carbon dioxide and water. The carbon dioxide is then expelled from the lungs.

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Human and sperm whale myoglobin have very similar primary structures. Which of the following statements are correct? a. The two

Mandarinka [93]

Question is incomplete ,complete question is as follows :

Human and sperm whale myoglobin have very similar primary structures. Which of the following statements are correct?

1) The two proteins are very likely related evolutionarily.

2) The differences in the sequences in many instances represent a conservative change (such L for I).

3) The differences in the sequences in many instances represent a nonconservative change (such as D for A).

4) There is no correlation between the two proteins since they originate from very different species.

Human and sperm whale myoglobin have very similar primary structures. Which of the following statements are correct?

A) Statements 1 and 2 are correct.

B) Statements 1, 2, and 4 are correct.

C) Statements 1, 2, and 3 are correct.

D) All of the listed statements are correct.

Answer:

A) Statements 1 and 2 are correct.

Explanation:

As the Human and sperm whale myoglobin are very likely related evolutionarily hence option a is correct.

The differences in the sequences in many instances represent a conservative change (such as L for I) hence option b is also correct.

While all the other options are not correct.

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which is one of the disadvantages of using fossil fuels as an energy resource? (a) burning fossil fuels produces radioactive was

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I believe the answer is b

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