5. An acid (releases)(accepts) H+ ions. 6. As the concentration of H+ ions increases, the pH (increases)(decreases), and the solution becomes more (acidic)(alkaline). 7. (Physiological buffers)(Chemical buffers) are the first to respond to an acid-base imbalance. 8. When the body's pH drops, chemical buffers work by (binding)(releasing) H+ ions. 9. A rising CO? level causes the concentration of H+ ions to (decrease)(increase). 10. The (respiratory system)(renal system) is the slowest system to respond to an acid-base imbalance.
Added by Luc-A M.
Close
Step 1
Step 1: An acid releases H+ ions. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 58 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
INCREASE OR DECREASE 7. If the body is acidic, the kidney will increase secretion of hydrogen ions [H+]. 8. If the body is basic, the lungs will increase ventilation rate. 9. If there is a heart attack and a person stops breathing for a short period of time, the result will be a decrease in pH. 10. If a person freaks out on a plane, breathing in a paper bag will decrease the amount of carbon dioxide in the bloodstream. 11. Metabolic acidosis means there is an increase in the body's acid production by tissues. 12. Respiratory alkalosis is a condition where ventilation rate increases, creating basic conditions in the body. 13. TRUE or FALSE (write out the word): Slight deviation from the normal pH can shut down entire metabolic pathways and result in coma followed by death. 14. Common buffer systems in the body include the following: choose all that apply A. carbonic acid B. proteins C. lipids D. phosphates
Adi S.
Q1. The carbonic acid-carbonate buffering system is a major buffering system in the blood. This buffering system keeps the blood pH stable (7.35-7.45). The carbonic acid concentration is controlled by respiration through the lungs while the bicarbonate concentration is maintained by the kidneys. H2O(l) + CO2(g) ⇌ H2CO3(aq) ⇌ HCO3-(aq) + H+(aq) Certain conditions such as smoke inhalation and emphysema lead to decreases in respiration rate. A decrease in respiration results in an increased concentration of dissolved CO2 in the blood. Using the equation above as well as Le Chatelier's principle, explain whether this would result in a decrease (acidosis) or an increase (alkalosis) in the blood pH. Q2. Metabolic acidosis is the decrease in blood pH that occurs when excess amounts of acidic substances are not removed from the blood. This condition can result from excess exercise, diabetes or diet. 1. If the proton concentration in the blood increases, in which direction will the equilibrium shift (use the equation above). Explain. 2. How will this affect the concentration of carbon dioxide levels? 3. Given that a person's breathing rate controls the amount of carbon dioxide exhaled and the amount of exhaled CO2(g) can be correlated to acidosis, will breathing rate increase or decrease in a person with metabolic acidosis in an attempt to restore normal blood pH? 4. Would hyperventilation result in respiratory alkalosis or acidosis? Why?
1. Discuss the physiological importance of chemical buffers in the body fluids such as the blood and the fluid that is secreted by the pancreas into the small intestine. What chemicals produced by the body can act as chemical buffers in the ECF? 2. When comparing a buffered solution from one that is not buffered, which one should change pH faster when adding an acid or base to the solutions? 3. While exercising, your ventilation probably increased. (a) What are the chemical changes that occur in your blood that will potentially stimulate an increase in ventilation? b)What are the effects of these chemical changes on the peripheral and central chemoreceptors?
Sri K.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD