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Helen [10]
4 years ago
14

What are the basic Organs of respiratory system?

Biology
2 answers:
xxTIMURxx [149]4 years ago
8 0

There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body's exterior.

tangare [24]4 years ago
6 0

Answer:

The organs and tissues that comprise the human respiratory system include the nose, pharynx, trachea, and lungs.

  • Nose. The respiratory system of humans begins with the nose, where air is conditioned by warming and moistening. ...
  • Pharynx.
  • Trachea.
  • Lungs.

There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body's exterior.

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Please provide details for this problem. I got 3.24; therefore accept the null hypothesis.
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See the answer below

Explanation:

The Chi-square (X^2) is calculated by the formula:

X^2 = \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency

A standard dihybrid cross is expected to give 9:3:3:1 phenotypic ratio.

Phenotype               O                  E                                  X^2

Round yellow          104       9/16 x 160 = 90          \frac{(104 - 90)^2}{90} = 2.18

Round green            27        3/16 x 160 = 30           \frac{(27 - 30)^2}{30} = 0.30

wringled yellow         27        3/16 x 160 = 30           \frac{(27 - 30)^2}{30} = 0.30

wrinkled green          2          1/16 x 160 = 10              \frac{(2 - 10)^2}{10} = 6.40

Total  X^2 value to two decimal places = 9.18

Degree of freedom = (n-1) = 4 -1 = 3

Critical  X^2 value at 95% probabillity level = 7.815

<em>Since the calculated  </em>X^2<em> si more than the critical  </em>X^2<em> value, </em><em>the null hypothesis is rejected. </em>

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