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Bas_tet [7]
3 years ago
13

A 55-year-old male was admitted to the hospital with heart failure. he complains of increasing shortness of breath on exertion,

and of needing to sleep on three pillows at night. on physical assessment, the nurse determines that his ankles and feet are very swollen. which of these symptoms either reflect left-sided and/or right-sided heart failure
Biology
1 answer:
Kipish [7]3 years ago
7 0
This patient both has left-sided heart failure and right-sided heart failure. In left-sided heart failure, this patient exhibits increasing shortness of breath on exertion as well as three pillow orthopnea which indicates pulmonary congestion. This is because of pooling of blood in the pulmonary circulation. Bipedal edema, in this patient is a grade 2 bipedal edema, reflect right-sided heart failure as there is pooling of blood in the systemic circulation, causing transudation in the most dependent areas of the body. 
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Answer:

An amino acid activates the repressor so that the repressor binds to the operator and prevents transcription.

Explanation:

In an operon, promoter is followed by operator which is finally followed by the structural genes to be transcribed. RNA Polymerase binds to the promoter and initiates transcription. A repressor can negatively control the transcription process by binding to the operator so that the RNA Polymerase is not able to move forward and transcription is halted.

For example: in trp operon, tryptophan amino acid binds to the repressor molecule which leads to change in repressor's shape. The repressor is now able to bind to the operator and prevent transcription.

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Answer:

Diferente.

Explicación:

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