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PLTW PBS Final Review Complete Questions and Answers 100% Correct | Latest Update 2025
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PLTW PBS Final Review Complete Questions andAnswers 100% Correct | Latest Update 2025
What do cells need in order to function? - ANSWER oxygen
What is hemoglobin? - ANSWER protein found in the red blood cells
What do hemoglobin do? - ANSWER transport oxygen
What can deformed hemoglobin cause? - ANSWER variety of health issues
What happens when the shape of a Hemoglobin is changed? - ANSWER it wont
be able to function properly
How do cells get the oxygen they need for energy production? - ANSWER
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? -
ANSWER 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? - ANSWER
because they have abnormal hemoglobin
, What effect does the altered shape of the red blood cell have on the health of the
individual? - ANSWER 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? - ANSWER 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? - ANSWER 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? - ANSWER recessive
If someone has sickle cell trait, can they pass it to their children? - ANSWER
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? - ANSWER It mostly occurs
in Africa
Why is it an advantage to have sickle cell trait? - ANSWER If they contract
malaria, they are less likely to die from it.
What can be visualized using a pedigree? - ANSWER expression of a trait
through the generations of a family
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