PLTW PBS Final Review Exam
Questions and Answers11
What do cells need in order to function? - ANSWERS-oxygen
What is hemoglobin? - ANSWERS-protein found in the red blood cells
What do hemoglobin do? - ANSWERS-transport oxygen
What can deformed hemoglobin cause? - ANSWERS-variety of health issues
What happens when the shape of a Hemoglobin is changed? - ANSWERS-it wont be able to
function properly
How do cells get the oxygen they need for energy production? - ANSWERS-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? - ANSWERS-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? - ANSWERS-because they have
abnormal hemoglobin
What effect does the altered shape of the red blood cell have on the health of the individual? -
ANSWERS-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? - ANSWERS-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? -
ANSWERS-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? - ANSWERS-recessive
If someone has sickle cell trait, can they pass it to their children? - ANSWERS-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? - ANSWERS-It mostly occurs in Africa
Why is it an advantage to have sickle cell trait? - ANSWERS-If they contract malaria, they are less
likely to die from it.
What can be visualized using a pedigree? - ANSWERS-expression of a trait through the
generations of a family
What carries the traits in reproductive cells? - ANSWERS-chromosomes
How are genetic diseases passed? - ANSWERS-from parent through child before birth
What happens when you change the genetic material of an organism? - ANSWERS-The organism
may have changes in the traits of an organism
How does someone get sickle cell disease? - ANSWERS-Both parents have to be carriers (Aa) to
give their child sickle cell disease (aa). HTe percentage of two carriers having a child with sickle
Questions and Answers11
What do cells need in order to function? - ANSWERS-oxygen
What is hemoglobin? - ANSWERS-protein found in the red blood cells
What do hemoglobin do? - ANSWERS-transport oxygen
What can deformed hemoglobin cause? - ANSWERS-variety of health issues
What happens when the shape of a Hemoglobin is changed? - ANSWERS-it wont be able to
function properly
How do cells get the oxygen they need for energy production? - ANSWERS-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? - ANSWERS-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? - ANSWERS-because they have
abnormal hemoglobin
What effect does the altered shape of the red blood cell have on the health of the individual? -
ANSWERS-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? - ANSWERS-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? -
ANSWERS-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? - ANSWERS-recessive
If someone has sickle cell trait, can they pass it to their children? - ANSWERS-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? - ANSWERS-It mostly occurs in Africa
Why is it an advantage to have sickle cell trait? - ANSWERS-If they contract malaria, they are less
likely to die from it.
What can be visualized using a pedigree? - ANSWERS-expression of a trait through the
generations of a family
What carries the traits in reproductive cells? - ANSWERS-chromosomes
How are genetic diseases passed? - ANSWERS-from parent through child before birth
What happens when you change the genetic material of an organism? - ANSWERS-The organism
may have changes in the traits of an organism
How does someone get sickle cell disease? - ANSWERS-Both parents have to be carriers (Aa) to
give their child sickle cell disease (aa). HTe percentage of two carriers having a child with sickle
