ACTIVITY #3 | My Journey In Science 4

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What is Duffy blood type?

The Duffy glycoprotein is a receptor for chemicals that are secreted by blood cells during inflammation. It also happens to be a receptor for Plasmodium vivax, a parasite that invades red blood cells (RBCs) and causes malaria.

History of Duffy

The Duffy blood group was discovered in 1950. It was named for a patient with hemophilia who had received multiple blood transfusions and was the first known producer of anti-Fya. A year later, anti-Fyb was discovered in a woman who had had several children. 

Reference: https://www.ncbi.nlm.nih.gov/books/NBK2271/


What is the advantage of Duffy negative people over Duffy positive people?

The Duffy will phenotype, Fy (a-b-), is rare among Cavcasian and Asian population, whereas it is the most common phenotype in Blacks. If your blood is duffy negative, the patient is more resistant to acquire malaria infection.

Reference: Modern Blood Banking and Transfusion Practices (6th Edition)


INQUIRY LAB: MY PULSE RATE



1.) Sit and relax for five minutes. Take your own pulse rate from your wrist for 60 seconds or one minute after resting. Record your observation.

        My pulse rate is 89 beats per minute.

2.) Jump ten times. Take your pulse rate for 60 seconds after jumping. Record your observation.

        My pulse rate is 123 beats per minute. 

3.) Take your seat. Rest and relax for another five minutes. Take your pulse rate again for 60 seconds. Record your observation.

        My pulse rate is 90 beats per minute. 

4.) Give at least two observations that you experienced from this activity.

        1. Based on my observation my pulse rate when I'm at rest and relax, it is in normal beats per                  minute.

        2. After I jump ten times, I observed that my heart starts pumping faster, which makes my pulse             rate increasing.



  That's it for our activity for today! I hope you learn about Pulse Rate. Have fun reading my blogs!

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