Biocatalytic reactions that can be assayed by ion-selective electrode biosensors could be

1. Conversion of urea into ammonium ions

2. Lipid breakdown into fatty acids and hydrogen ions

3. Conversion of glucose into gluconic acid

4. Glucose breakdown into acetyl coA

Which of the above statements are incorrect?

#Question id: 11062

#Unit 7. System Physiology – Animal

The alveolar pressure of a normal 77-year-old woman is approximately 1 cm H2O during expiration. What is the alveolar pressure during inspiration (in cm H2O)?

#Question id: 11063

#Unit 7. System Physiology – Animal

A man inspires 1000 ml from a spirometer. The intrapleural pressure was −4 cm H2O before inspiration and −12 cm H2O the end of inspiration. What is the compliance of the lungs?

#Question id: 11064

#Unit 7. System Physiology – Animal

The diagram above shows three different compliance curves (S, T, and U) for isolated lungs subjected to various transpulmonary pressures. Which of the following best describe the relative compliances for the three curves?

#Question id: 11065

#Unit 7. System Physiology – Animal

A liquid-ventilated lung compared to a gas-ventilated lung

#Question id: 11066

#Unit 7. System Physiology – Animal

A 22-year-old woman has a pulmonary compliance of 0.2 L/cm H2O and a pleural pressure of −4 cm H2O. What is the pleural pressure (in cm H2O) when the woman inhales 1.0 L of air?

#Question id: 11067

#Unit 7. System Physiology – Animal

A preterm infant has a surfactant deficiency. Without surfactant, many of the alveoli collapse at the end of each expiration, which in turn leads to pulmonary failure. Which of the following sets of changes are present in the preterm infant, compared to a normal infant?