PLTW PBS FINAL REVIEW QUESTIONS WITH ANSWERS #7
What do cells need in order to function? - correct answer oxygen
What is hemoglobin? - correct answer protein found in the red blood cells
What do hemoglobin do? - correct answer transport oxygen
What can deformed hemoglobin cause? - correct answer variety of health issues
What happens when the shape of a Hemoglobin is changed? - correct answer it wont
be able to function properly
How do cells get the oxygen they need for energy production? - correct 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? - correct
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? - correct answer because
they have abnormal hemoglobin
What effect does the altered shape of the red blood cell have on the health of the
individual? - correct 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? - correct 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? - correct 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? - correct answer recessive
If someone has sickle cell trait, can they pass it to their children? - correct 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? - correct answer It mostly occurs in
Africa
Why is it an advantage to have sickle cell trait? - correct answer If they contract malaria,
they are less likely to die from it.
, What can be visualized using a pedigree? - correct answer expression of a trait through
the generations of a family
What carries the traits in reproductive cells? - correct answer chromosomes
How are genetic diseases passed? - correct answer from parent through child before
birth
What happens when you change the genetic material of an organism? - correct answer
The organism may have changes in the traits of an organism
How does someone get sickle cell disease? - correct answer 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 cell is 1:4. The chance of a child of two carriers having a child
with sickle cell trait is 2:4. The chances of two carriers having a child without sickle cell
is 1:4
Is sickle cell disease contagious? - correct answer No it is a genetic disease that people
are born with
How are diseases inherited from parents? - correct answer A child has 46
chromosomes, 23 from mom and 23 from dad. Parents can pass on a chromosome that
have genetic diseases
What are examples of human diseases that are inherited? - correct answer One
example is sickle cell anemia
How many chromosomes do humans normally have? - correct answer 46
Why does sickle cell disease run in families yet is not present in every generation? -
correct answer Because sickle cell disease is a recessive disease so you would only
have the disease if both parents had the trait or disease
How can doctors and genetic counselors calculate the probability of a child inheriting a
disease? - correct answer they can use a punnet square
A chromosome that is not directly involved in determining sex, as opposed to a sex
chromosome - correct answer autosome
Any of the usually linear bodies in the cell nucleus that contain the genetic material -
correct answer chromosome
Capable of being transmitted from person to person, animal to animal, animal to human,
or human to animal by contact - correct answer contagious
What do cells need in order to function? - correct answer oxygen
What is hemoglobin? - correct answer protein found in the red blood cells
What do hemoglobin do? - correct answer transport oxygen
What can deformed hemoglobin cause? - correct answer variety of health issues
What happens when the shape of a Hemoglobin is changed? - correct answer it wont
be able to function properly
How do cells get the oxygen they need for energy production? - correct 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? - correct
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? - correct answer because
they have abnormal hemoglobin
What effect does the altered shape of the red blood cell have on the health of the
individual? - correct 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? - correct 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? - correct 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? - correct answer recessive
If someone has sickle cell trait, can they pass it to their children? - correct 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? - correct answer It mostly occurs in
Africa
Why is it an advantage to have sickle cell trait? - correct answer If they contract malaria,
they are less likely to die from it.
, What can be visualized using a pedigree? - correct answer expression of a trait through
the generations of a family
What carries the traits in reproductive cells? - correct answer chromosomes
How are genetic diseases passed? - correct answer from parent through child before
birth
What happens when you change the genetic material of an organism? - correct answer
The organism may have changes in the traits of an organism
How does someone get sickle cell disease? - correct answer 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 cell is 1:4. The chance of a child of two carriers having a child
with sickle cell trait is 2:4. The chances of two carriers having a child without sickle cell
is 1:4
Is sickle cell disease contagious? - correct answer No it is a genetic disease that people
are born with
How are diseases inherited from parents? - correct answer A child has 46
chromosomes, 23 from mom and 23 from dad. Parents can pass on a chromosome that
have genetic diseases
What are examples of human diseases that are inherited? - correct answer One
example is sickle cell anemia
How many chromosomes do humans normally have? - correct answer 46
Why does sickle cell disease run in families yet is not present in every generation? -
correct answer Because sickle cell disease is a recessive disease so you would only
have the disease if both parents had the trait or disease
How can doctors and genetic counselors calculate the probability of a child inheriting a
disease? - correct answer they can use a punnet square
A chromosome that is not directly involved in determining sex, as opposed to a sex
chromosome - correct answer autosome
Any of the usually linear bodies in the cell nucleus that contain the genetic material -
correct answer chromosome
Capable of being transmitted from person to person, animal to animal, animal to human,
or human to animal by contact - correct answer contagious
