BIO 1050 EXAM 1 ECU COMPREHENSIVE
QUESTIONS AND ANSWERS GRADED A+
◉ Someone brings you an unidentified item that has not been
described by scientists yet. According to cell theory, what could you
examine to determine if this item was alive?
Answer: Whether the item was composed of cells
◉ A hypothetical study examined the possible link between
thimerosal (a preservative in some MMR vaccines) and an increased
risk of developing autism. This study had a group of 1000 children.
Half (500) of the children were randomly selected to receive a MMR
vaccine that included thimerosal and the other half (500) of the
children were randomly selected to receive a MMR vaccine that did
not include the preservative thimerosal. All 1000 children were
monitored until the age of 6 and investigators recorded the number
of children who developed autism.
They discovered that the same number of children developed autism
in the group that received the vaccine without thimerosal as in the
group that received the vaccine with thimerosal. What is the next
step after receiving these results?
Answer: You have rejected the hypothesis that thimerosal causes
autism; new hypotheses should be developed and tested to explain
the cause of autism.
,◉ True or False
All cells are surrounded by a cell wall.
Answer: False
◉ You woke up today and read "you are what your grandparents
feared!!". The news article referred to a single study based on a total
of 2 rats, 1 of which received fear stimulation by electrocution. The
researchers then followed up till the grandoffspring generation and
reported that 3 grandoffspring pups showed the same anxious
behavior when touched by the same deactivated electric rod despite
never seeing it before. This report:
Answer: Did Not report proper controls
◉ True or False
All eukaryotes are multicellular.
Answer: False
◉ Our livers are responsible for processing particular drugs we take.
Therefore we would expect the liver to have lots of _______ .
Increasing the amount of this particular cell organelle is what
sometimes causes people to build up a tolerance to drugs, requiring
them to take ever increasing quantities of the drug to feel the same
effect.
Answer: Smooth endoplasmic reticulum
, ◉ Sperm are able to move largely due to their _____.
Answer: Cytoskeleton
◉ During endocytosis, particles are transported ____ the cell within a
_____ .
Answer: into, vesicle
◉ A hypothetical study examined the possible link between
thimerosal (a preservative in some MMR vaccines) and an increased
risk of developing autism. This study had a group of 1000 children.
Half (500) of the children were randomly selected to receive a MMR
vaccine that included thimerosal and the other half (500) of the
children were randomly selected to receive a MMR vaccine that did
not include the preservative thimerosal. All 1000 children were
monitored until the age of 6 and investigators recorded the number
of children who developed autism. What is the independent variable
in this experiment?
Answer: The presence/absence of thimerosal in the MMR Vaccine
◉ Plant parts that contain a lot of poisonous materials to protect
them from being eaten by animals would have many _____ .
Answer: Vacuoles
◉ Rough Endoplasmic Reticulum
QUESTIONS AND ANSWERS GRADED A+
◉ Someone brings you an unidentified item that has not been
described by scientists yet. According to cell theory, what could you
examine to determine if this item was alive?
Answer: Whether the item was composed of cells
◉ A hypothetical study examined the possible link between
thimerosal (a preservative in some MMR vaccines) and an increased
risk of developing autism. This study had a group of 1000 children.
Half (500) of the children were randomly selected to receive a MMR
vaccine that included thimerosal and the other half (500) of the
children were randomly selected to receive a MMR vaccine that did
not include the preservative thimerosal. All 1000 children were
monitored until the age of 6 and investigators recorded the number
of children who developed autism.
They discovered that the same number of children developed autism
in the group that received the vaccine without thimerosal as in the
group that received the vaccine with thimerosal. What is the next
step after receiving these results?
Answer: You have rejected the hypothesis that thimerosal causes
autism; new hypotheses should be developed and tested to explain
the cause of autism.
,◉ True or False
All cells are surrounded by a cell wall.
Answer: False
◉ You woke up today and read "you are what your grandparents
feared!!". The news article referred to a single study based on a total
of 2 rats, 1 of which received fear stimulation by electrocution. The
researchers then followed up till the grandoffspring generation and
reported that 3 grandoffspring pups showed the same anxious
behavior when touched by the same deactivated electric rod despite
never seeing it before. This report:
Answer: Did Not report proper controls
◉ True or False
All eukaryotes are multicellular.
Answer: False
◉ Our livers are responsible for processing particular drugs we take.
Therefore we would expect the liver to have lots of _______ .
Increasing the amount of this particular cell organelle is what
sometimes causes people to build up a tolerance to drugs, requiring
them to take ever increasing quantities of the drug to feel the same
effect.
Answer: Smooth endoplasmic reticulum
, ◉ Sperm are able to move largely due to their _____.
Answer: Cytoskeleton
◉ During endocytosis, particles are transported ____ the cell within a
_____ .
Answer: into, vesicle
◉ A hypothetical study examined the possible link between
thimerosal (a preservative in some MMR vaccines) and an increased
risk of developing autism. This study had a group of 1000 children.
Half (500) of the children were randomly selected to receive a MMR
vaccine that included thimerosal and the other half (500) of the
children were randomly selected to receive a MMR vaccine that did
not include the preservative thimerosal. All 1000 children were
monitored until the age of 6 and investigators recorded the number
of children who developed autism. What is the independent variable
in this experiment?
Answer: The presence/absence of thimerosal in the MMR Vaccine
◉ Plant parts that contain a lot of poisonous materials to protect
them from being eaten by animals would have many _____ .
Answer: Vacuoles
◉ Rough Endoplasmic Reticulum
