Physics Lab 1 Test - Quizzes From The Year ACTUAL UPDATED QUESTIONS AND
CORRECT ANSWERS
,A scientist is trying to increase the number of cells grown c. DV = percent survival of cell cultures; IV = treatment
in the lab. After giving 3 different treatments, she
obtained the results presented in the table below.
Percent survival of cell cultures
Cell Type
Treatment A
Treatment B
Treatment C
HeLa*
79%
25%
54%
Stem
56%
18%
81%
Kidney
18%
9%
2%
T cells
22%
22%
22%
*HeLa cells come from an immortal human cancer cell
line. They were taken from a patient, Ms. Henrietta Lacks,
in 1951 and have been continuously grown for research to
this day. Ms. Lacks' cells have been credited with helping
find a cure for polio as well as becoming an effective
model to study (and hopefully cure) cancer.
What one of the following represents possible
dependent and independent variables for the
investigation in this scenario?
Over a period of 10 days a student measures the average b.
growth of three similar plants grown in three different DV = plant growth; IV = lighting conditions
lighting conditions: A, B, C.
a.
DV = lighting conditions; IV = number of days
b.
DV = plant growth; IV = lighting conditions
c.
DV = lighting conditions; IV = plant growth
d.
DV = number of days; IV = lighting conditions
e.
DV = number of days; IV = plant growth
, Consider this graph which shows carbon dioxide levels d.
that were measured each January over five decades at The amount of atmospheric carbon dioxide is related to the year it was measured.
the Mauna Loa observatory in Hawaii. What is a possible
hypothesis for the investigation portrayed in this
scenario?
a.
The amount of atmospheric carbon dioxide is increasing
each year.
b.
All investigations measuring the amount of atmospheric
carbon dioxide would yield similar results.
c.
If the levels of atmospheric carbon dioxide were
measured in another observatory at the same latitude the
same results would be found.
d.
The amount of atmospheric carbon dioxide is related to
the year it was measured.
e.
The amount of atmospheric carbon dioxide is related to
the location it was measured.
The graph represents the amount of product created in a e.
reaction aided by one of two enzymes. [Enzyme A is The amount of product created is related to the temperature of the reaction.
represented by the line mostly on top and Enzyme B is
represented by the line with the sharper peak.]What is a
possible hypothesis for the investigation portrayed in this
scenario?
a.
Enzyme B creates more product at a reaction
temperature of 45 °C than Enzyme A.
b.
The enzyme used is related to the temperature of the
reaction.
c.
The temperature of the reaction is related to the amount
of product created.
d.
Enzyme A creates more product than Enzyme B for most
temperatures.
e.
The amount of product created is related to the
temperature of the reaction.
CORRECT ANSWERS
,A scientist is trying to increase the number of cells grown c. DV = percent survival of cell cultures; IV = treatment
in the lab. After giving 3 different treatments, she
obtained the results presented in the table below.
Percent survival of cell cultures
Cell Type
Treatment A
Treatment B
Treatment C
HeLa*
79%
25%
54%
Stem
56%
18%
81%
Kidney
18%
9%
2%
T cells
22%
22%
22%
*HeLa cells come from an immortal human cancer cell
line. They were taken from a patient, Ms. Henrietta Lacks,
in 1951 and have been continuously grown for research to
this day. Ms. Lacks' cells have been credited with helping
find a cure for polio as well as becoming an effective
model to study (and hopefully cure) cancer.
What one of the following represents possible
dependent and independent variables for the
investigation in this scenario?
Over a period of 10 days a student measures the average b.
growth of three similar plants grown in three different DV = plant growth; IV = lighting conditions
lighting conditions: A, B, C.
a.
DV = lighting conditions; IV = number of days
b.
DV = plant growth; IV = lighting conditions
c.
DV = lighting conditions; IV = plant growth
d.
DV = number of days; IV = lighting conditions
e.
DV = number of days; IV = plant growth
, Consider this graph which shows carbon dioxide levels d.
that were measured each January over five decades at The amount of atmospheric carbon dioxide is related to the year it was measured.
the Mauna Loa observatory in Hawaii. What is a possible
hypothesis for the investigation portrayed in this
scenario?
a.
The amount of atmospheric carbon dioxide is increasing
each year.
b.
All investigations measuring the amount of atmospheric
carbon dioxide would yield similar results.
c.
If the levels of atmospheric carbon dioxide were
measured in another observatory at the same latitude the
same results would be found.
d.
The amount of atmospheric carbon dioxide is related to
the year it was measured.
e.
The amount of atmospheric carbon dioxide is related to
the location it was measured.
The graph represents the amount of product created in a e.
reaction aided by one of two enzymes. [Enzyme A is The amount of product created is related to the temperature of the reaction.
represented by the line mostly on top and Enzyme B is
represented by the line with the sharper peak.]What is a
possible hypothesis for the investigation portrayed in this
scenario?
a.
Enzyme B creates more product at a reaction
temperature of 45 °C than Enzyme A.
b.
The enzyme used is related to the temperature of the
reaction.
c.
The temperature of the reaction is related to the amount
of product created.
d.
Enzyme A creates more product than Enzyme B for most
temperatures.
e.
The amount of product created is related to the
temperature of the reaction.
