This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The two-point calibration for the pH electrode uses two buffers. Which of the following pH val-ues ... (Read 74 times)

Frost2351

  • Hero Member
  • *****
  • Posts: 557
on: Jul 16, 2018
The two-point calibration for the pH electrode uses two buffers. Which of the following pH val-ues are correct for these two buffers? 1. 6.839 2. 6.840 3. 7.384 4. 7.495
 
  a. 1 and 3 c. 2 and 4
  b. 1 and 4 d. 2 and 3

Question 2

What is responsible for the conversion of glucose to hydrogen peroxide and gluconic acid on the surface of the glucose electrode?
 
  a. Hydrogen peroxide c. Glucagon oxidase
  b. Phosphodiesterase d. Glucose oxidase


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

missalyssa26

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
The National Institute of Standards and Technology (NIST) and the International Federation of Clinical Chemistry (IFCC) have established standards for the calibration of blood gas electrodes. A one-point calibration uses a nearly normal pH buffer with a pH of 7.384. A second, lower pH buffer, pH 6.840 is analyzed in the two-point calibration to ensure that the electronic output of the electrode is linear over a wide range of pH levels.

Answer to Question 2

ANS: A
As a blood sample comes in contact with the measuring electrode of the glucose sensor, the glu-cose oxidase on the surface of the electrode converts the glucose in the sample to hydrogen per-oxide and gluconic acid.


Frost2351

  • Member
  • Posts: 557
Reply 2 on: Jul 16, 2018
Wow, this really help

bbburns21

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Male tule elk in Point Reyes Male tule elk in Point Reyes
Cardiac pacemaker. The pacemaker device is implanted beneath the skin near the heart, and the electr Cardiac pacemaker. The pacemaker device is implanted beneath the skin near the heart, and the electr
Ulysses S. Grant poses at City Point, Virginia, during the siege of Petersburg. Ulysses S. Grant poses at City Point, Virginia, during the siege of Petersburg.
Your Culture and Your Point of View Your Culture and Your Point of View
Point of Intersection of 2 Circles Point of Intersection of 2 Circles
Which of the buffers below would be the BEST choice for making a solution capable of buffering ... Which of the buffers below would be the BEST choice for making a solution capable of buffering ...
Video: Types of Burns

For a complete list of videos, visit our video library