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LenKa [72]
3 years ago
5

If a disease has an unknown cause, then it is said to be

Biology
2 answers:
Illusion [34]3 years ago
7 0
I believe it is idiopathic. 
____ [38]3 years ago
7 0

Correct answer: B). Idiopathic

An idiopathic disease is any disease or disorder, which is caused due to an unknown cause or mechanism. When the doctor is not sure about the cause of disease, then such type of disease is called idiopathic disease. It is a Greek word, in which idios means own and pathos means suffering. It means a disease of its own kind.

Example: Acute idiopathic polyneuritis, idiopathic pulmonary fibrosis etc.



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In photosynthesis, redox reactions ultimately transfer electrons from ______ to ______.
german

The correct answer is: D) H2O… CO2

Redox reactions are reactions of reduction (molecules tend to gain electrons) and oxidation (molecules tend to lose electrons).

Photosynthesis is a set of redox reactions. In photosynthesis electrons are removed from water (H2O) to carbon dioxide CO2 and then used to turn CO2 into organic compounds.  

The first step: Oxygen in water is oxidized (light energy required)

The second step: Carbon in CO2 is reduced; sugar is formed (dark reaction).

3 0
3 years ago
About this much of the energy released from food molecules during catabolism is released as heat:______.
lorasvet [3.4K]

About this much of the energy released from food molecules during catabolism is released as heat: adenosine triphosphate (ATP)

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ATP is synthesized in the mitochondria is the primary energy source for the important biological functions, such as the muscle contraction, the nerve impulse transmission, and the protein synthesis

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3 0
2 years ago
What is the function of the Type II alveolar cell?
hoa [83]

Answer: The function of the Alveolar type II cells is that they secrete a lipoprotein material that is known as surfactant.  The  primary function of the surfactant is to reduce the surface tension in the alveoli.

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Type II have an important function Type II as they secrete pulmonary surfactant in order to lessen the surface tension of water and allows the membrane to separate, therefore increasing its capability to exchange gases.

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