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dybincka [34]
3 years ago
11

Which respiratory-associated muscles would contract or relax during forced expiration, for example blowing up a balloon?

Biology
2 answers:
Nutka1998 [239]3 years ago
8 0
The correct answer is B, internal intercostal muscles and abdominal muscles would contract.
Exhalation is the flow of the breath out of the body. During forced exhalation, internal intercostal muscles contracts which lower the rib cage and decrease thoracic volume, while the abdominal muscles push up on the diaphragm which causes the thoracic cavity to contract. 
____ [38]3 years ago
7 0
I<span>nternal intercostals and abdominal muscles would contract.

</span>Exhalation is the flow of the breath out of an organism. In humans it is the movement of air from the lungs out of the airways, to the external environment during breathing<span>.</span>
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The light reactions require the cooperation of 2 photosystems to power linear electron flow from h2o to NADP+.?
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Answer:

Only Photosystem I  - 1, 5, 6

Only photosystem II - 3, 2

Both Photosystem I and II   - 4

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Only Photosystem I  

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c) Oxidation of electron transport chain between the two photosystems.

Only photosystem II

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Both Photosystem I and II  

a) Light is absorbed in both photosystem I and II. While in photosystem I, light waves of large wavelength i.e 700 nm are absorbed, in photosystem II light waves of short wavelength of i.e 680 nm are absorbed.

7 0
3 years ago
What do cells in prokaryotes and eukaryote contain?
gavmur [86]

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4 years ago
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