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oee [108]
3 years ago
15

The system responsible for the exchange of gases between the blood and atmospheric air is the ____________ system.

Biology
1 answer:
bija089 [108]3 years ago
6 0
The respiratory system is responsible for the exchange of gases between the blood and atmospheric air.
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When CO2 combines with water it forms carbonic acid. How does this explain the phenol red result?
Natalka [10]

Answer:

Detail is given below.

Explanation:

First of all we will understand the pH.

pH:

pH is the negative log of hydrogen ion concentration.

pH = -[logH⁺]

It means when the  ions concentration increases pH will be low and when H⁺ concentration ions decreases pH will be greater. The pH range is 0-14.

If the pH is 7 the solution is neutral, if it is less than 7 the solution will be acidic and above 7 the solution is basic.

when CO₂ is added with water carbonic acid is formed and yield H⁺ ions which decreases the pH thus its color changes from red to yellow just like phenolic indicator. When phenol red is added into the acidic solution the color changes from red to yellow.

and when carbon dioxide is take off from photosynthesis process it means H⁺ ions are going to be decreased thus color changes from yellow to red.

3 0
4 years ago
Griffiths (1928) mixed heat-killed "S" bacteria with "R" bacteria and injected a mouse with both types of bacteria. As a result,
Serjik [45]

Answer:

transformation

Explanation:

Transformation is one of the three methods of genetic recombinant in bacteria. The other two are transduction and conjugation. Transformation occurs when the bacterial cells take up the DNA and which in turn changes their phenotype.

Transformation requires that there should not be any cell to cell contact. In the experiments performed by Griffith, the heat-killed virulent S strains were mixed with live R strains. The R strain took the DNA of heat-killed S strains which in turn converted them into the virulent strains. Since this horizontal gene transfer did not include any cell-to-cell contact, he called the process transformation.

8 0
3 years ago
Describe your journey starting as a CO2 molecule in the bottom layer dissolved in the water. Describe at least 3 transformations
tester [92]

Answer:Carbon is found in all living things. Carbon atoms move constantly through living organisms, the oceans, the atmosphere, and the Earth's crust in what is.

Explanation:

8 0
3 years ago
Which is a malignant disorder of mature antibody-secreting b lymphocytes or plasma cells?
MAXImum [283]
The malignant disorder of mature antibody-secreting b lymphocytes or plasma cells is called the Multiple Myeloma. 
Multiple Myeloma is a cancer of plasma cells in the bone marrow.  The condition features abnormal proliferation of plasma cells in the bone marrow, destructive bone lesions, and the production of abnormal proteins, specifically antibodies. Its symptoms may include, fatigue, bone pain, bone fracture, kidney failure among other symptoms.  
4 0
4 years ago
Which of the following isn’t an organism? a.human b.mold c.bacteria d.lung
cupoosta [38]

The answer is "D. Lung".

3 0
4 years ago
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