PLTW PBS FINAL EXAM REVIEW WITH 100% CORRECT QUESTIONS & ANSWERS WELL EXPLAINED LATEST UPDATE 2023/2024 ( A+ GRADED 100% VERIFIED

PLTW PBS FINAL EXAM REVIEW WITH 100% CORRECT QUESTIONS & ANSWERS WELL EXPLAINED LATEST UPDATE 2023/2024 ( A+ GRADED 100% VERIFIED What do cells need in order to function? oxygen What is hemoglobin? protein found in the red blood cells What do hemoglobin do? transport oxygen What can deformed hemoglobin cause? variety of health issues What happens when the shape of a Hemoglobin is changed? it wont be able to function properly How do cells get the oxygen they need for energy production? hemoglobin travels around the body in red blood cells and the oxygen diffuses out of the red blood cell into the cell What do normal red blood cells look like when placed under a microscope? They are red and are round and shaped like donuts. It does not have a nucleus. Why do some people have differently shaped red blood cells? because they have abnormal hemoglobin What effect does the altered shape of the red blood cell have on the health of the individual? decreased oxygen delivery to those cells, blockage of blood cells, reduced number of red blood cells (anemia) What are some symptoms of sickle cell anemia? Jaundice (caused by biliruben), pains (caused by blood flow being cut off), fatigue, sometimes paleness What is the difference between someone having sickle cell trait and having sickle cell anemia? if you have sickle cell trait (Aa) then you do not show any symptoms. if you have sickle cell anemia (aa), then you show symptoms. Is sickle cell a dominant of recessive gene? recessive If someone has sickle cell trait, can they pass it to their children? Yes, if both parents have sickle cell trait then they can have a child with sickle cell anemia Where in the world does sickle cell disease occur? It mostly occurs in Africa Why is it an advantage to have sickle cell trait? If they contract malaria, they are less likely to die from it.