BSC 2085 BONUS QUESTION Test 1Chapters 1 and 2 STUDENT SHOULD ANSWER BONUS QUEST
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Question
BSC 2085 BONUS QUESTION Test 1Chapters 1 and 2 STUDENT SHOULD ANSWER BONUS QUESTION ON THE BACK OF THE SCANTRON 1) Mrs. Roberts, In a diabetic coma, has just been admitted to Noble Hospital. Her blood pH indicates that she is in severe acidosis and measures are quickly taken to bring her pH back within normal limits. a) What is the normal pH of blood? b) Why is severe acidosls a problem? 2) Jimmy, a 12 year old boy, was awakened suddenly by a load crash. As he sat up in becd straining to listen his fright was revealed by his rapid breathing (hyperventilatlon) a breathing pattern that rids the blood of CO2 At this polnt was his blood pH rising or falling? 3) Which property of water is significant in children born prematurely because it causes the air sacs to collapse in the lungs, making breathing difficult? 4) An individual is exposed to high-energy radiation. Which organic molecule (biomolecule) that regulates the process of protein synthesis may have been mutated?Explanation / Answer
Question 1
Answer
a) The normal pH of the blood is in the range between 7.35 - 7.45.
b) In the body always maintain the acid-base balance that can regulate the normal functions of the body systems.
severe acidosis may lead to following problems
i. decreases the binding of oxygen to hemoglobin and oxygen and hemoglobin dissociation curve shifts right.
ii. it causes the disturbances in the transport of ions across the membrane.
iii. it also causes changes in DNA. the DNA becomes unstable.
iv. increase acidosis also lead to confusion, rapid breathing shortness of breathing and lethargy.
Question 2
Answer
The affinity of oxygen to hemoglobin depends on the acidity and alkalinity of the blood. In case of hyperventilation, more amount of carbon dioxide is leaving the body so it increases the pH of the blood and decreases the partial pressure of carbon dioxide.
Question 3
Answer
Surface tension.
The lungs are covered by thin layer of water that can develop surface tension in lungs. this surface tension can be reduced by the substance called surfactant which is produced by alveolar cells. This can provide free recoiling of lungs and smooth movements of lungs. In premature conditions, the lungs can produce sufficient surfactant and the increased surface tension cause the collapse of lungs and difficulty in breathing due to lack of easy recoiling.
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