Therapywasaaste
"When I look in the mirror, I throw up."
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mit 6 FRQ Exam
Read each question carefully. Write your response in the space provided for each part of each question. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable and will not be scured. In response to an increase in the frequency of thunderstorms that prodice damaging hail, some apple growers have
started to cover their apple orchards with large nets. While these nets protect the apple trees from hail damage, the
mets also decrease the amount of light that teaches the trees. In as steps to reduce the impact of shading by the
nets, researchers investigated the ability of different ground covers placed around the base of the trees to reflect
light back to the apple trees. An apple orchard with genetically identical apple trees was divided in half
reflective ground cover was applied to one half of the orchard, while grass was left as the ground cover the
other half. A sample of apples was taken from every tree. The percent of light reflected by the two ground covers
was measured at three distances above the ground (Figure 1)
70-
60
0.5 m
1.0 m
1.5 m
Percent of Light Reflected
50
40-
30-
20
10+
0
-10
Grass
Reflective Ground Cover
Figure 1. Percent of light reflected by ground covers, measured at three distances above the ground. Error bus equal +2SE
The amount of light that apple trees receive changes the expression of a certain transcription factor. This transcription factor affects the transcription rate of the gene encoding the enzyme phenylalanine ammonium-ly (PAL) The PAL enzyme is required for the production of two types of pigments, anthocyanins and flavono which contribute to the coloration of apples. Light also affects the activity of the PAL enzyme by a signal6FRO) Exam
Ton Riuatie
pigment production. In leaves, the PAL enzyme is also required for the production of other pigment molecules that are capable of absorbing UV and other radiation from the sun. Explain how the relationship between light and pigment production might serve as a protective mechanism for the cells of the apple tree. Explain how the PAL enzyme interacts with its substrate in the absence of light.www
Head each question varetutte Witte your regins in the space provided for each part of each question Asmat be written out in paragraph form. Outlines, holleted lists, or diagrams alone are not
lines are chers of camere ells so often contain blood vessels When melecule It binds to the wild-type
e prin at the plan membase of certain solid user cancer cells (Figure 1), the cancer cells express the
thetrane protein A is so stulate increased growth of blood vessels into the tumors.
Wells with a particular mutation in the Free goue (Bree-MUT cells) have mich increased expression levels of And se greater grad of blood vessels than do cancer cells with the wild type Brec Bree-WT cells); the cells with the mutant Bree can trigger intimcellular signaling in the absence of B
Hechers proposed that the signaling pathway modeled in Figure 1 is triggered by activation of the wild-type
Bree and is associated with phosphory tation and activation of kinase D, expression of A. and the ability of the
cancer cells to simulate blood vessel growth
theo (Inactive)
Plasma Membrane
growth of
blood vessels into tumors
(Active)
DjActive
(Active)
Phosphate group
(active)
Figure 1. A simplifted model of the normal signaling pathway beyothesized to play a role in certain cancer cells expressing A and stimolating blood vessel growth into solid mos
(a) Based on the signaling model shown in Figure 1. describe the role of protein Brec
to Explain how the addition of a phosphate group to certain amino acids kinase D can result in the activation D Explain how the activation of the way shown in Figure I can lead to increased production of A
(c) Based on the prope gnaling pathway predict the relative amount of phosphory bood to unphophora
Ana D in the three MUT cells when the cells are grown in mirent both lacking B. Justify your probction d) The researchers introsiced a small RNA complementary to a portion of the mRNA encoding in AA&FRQ Exam
the Bree-MUT cells growing in a petri dish The researchers clain deat the treated cells will fa Nood vessel fetmation. Based on ination provided, provide reasoning to support iber clai
Directions: Questions 1 is long free-requese questions that requires about 22 tes to answer and is worth 10 point Read the question carefully and completely Answers must be written out in paragraph hide paragraph on Outlines, bulleted lits, or diagrams alone are not acceptable
To determine the likelihood that a patient with a bacterial infection who is in the intensive care unit (ICU) of a hospital could be successfully treated with antibiotic therapies, researchers investigated the frequency of setiboe resistance in bacteria isolated from patients in ICUs in the United States from 1994 to 2000 The data from the study are shown in the table, along with the overall change in the frequency of bactual resistance in patient samples from 1994 to 2000
INCIDENCE OF ANTI STANES
3
Using the data, provide justification for the chim that antibiotic resistance may arise in bacterial specses
Read each question carefully. Write your response in the space provided for each part of each question. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable and will not be scured. In response to an increase in the frequency of thunderstorms that prodice damaging hail, some apple growers have
started to cover their apple orchards with large nets. While these nets protect the apple trees from hail damage, the
mets also decrease the amount of light that teaches the trees. In as steps to reduce the impact of shading by the
nets, researchers investigated the ability of different ground covers placed around the base of the trees to reflect
light back to the apple trees. An apple orchard with genetically identical apple trees was divided in half
reflective ground cover was applied to one half of the orchard, while grass was left as the ground cover the
other half. A sample of apples was taken from every tree. The percent of light reflected by the two ground covers
was measured at three distances above the ground (Figure 1)
70-
60
0.5 m
1.0 m
1.5 m
Percent of Light Reflected
50
40-
30-
20
10+
0
-10
Grass
Reflective Ground Cover
Figure 1. Percent of light reflected by ground covers, measured at three distances above the ground. Error bus equal +2SE
The amount of light that apple trees receive changes the expression of a certain transcription factor. This transcription factor affects the transcription rate of the gene encoding the enzyme phenylalanine ammonium-ly (PAL) The PAL enzyme is required for the production of two types of pigments, anthocyanins and flavono which contribute to the coloration of apples. Light also affects the activity of the PAL enzyme by a signal6FRO) Exam
Ton Riuatie
pigment production. In leaves, the PAL enzyme is also required for the production of other pigment molecules that are capable of absorbing UV and other radiation from the sun. Explain how the relationship between light and pigment production might serve as a protective mechanism for the cells of the apple tree. Explain how the PAL enzyme interacts with its substrate in the absence of light.www
Head each question varetutte Witte your regins in the space provided for each part of each question Asmat be written out in paragraph form. Outlines, holleted lists, or diagrams alone are not
lines are chers of camere ells so often contain blood vessels When melecule It binds to the wild-type
e prin at the plan membase of certain solid user cancer cells (Figure 1), the cancer cells express the
thetrane protein A is so stulate increased growth of blood vessels into the tumors.
Wells with a particular mutation in the Free goue (Bree-MUT cells) have mich increased expression levels of And se greater grad of blood vessels than do cancer cells with the wild type Brec Bree-WT cells); the cells with the mutant Bree can trigger intimcellular signaling in the absence of B
Hechers proposed that the signaling pathway modeled in Figure 1 is triggered by activation of the wild-type
Bree and is associated with phosphory tation and activation of kinase D, expression of A. and the ability of the
cancer cells to simulate blood vessel growth
theo (Inactive)
Plasma Membrane
growth of
blood vessels into tumors
(Active)
DjActive
(Active)
Phosphate group
(active)
Figure 1. A simplifted model of the normal signaling pathway beyothesized to play a role in certain cancer cells expressing A and stimolating blood vessel growth into solid mos
(a) Based on the signaling model shown in Figure 1. describe the role of protein Brec
to Explain how the addition of a phosphate group to certain amino acids kinase D can result in the activation D Explain how the activation of the way shown in Figure I can lead to increased production of A
(c) Based on the prope gnaling pathway predict the relative amount of phosphory bood to unphophora
Ana D in the three MUT cells when the cells are grown in mirent both lacking B. Justify your probction d) The researchers introsiced a small RNA complementary to a portion of the mRNA encoding in AA&FRQ Exam
the Bree-MUT cells growing in a petri dish The researchers clain deat the treated cells will fa Nood vessel fetmation. Based on ination provided, provide reasoning to support iber clai
Directions: Questions 1 is long free-requese questions that requires about 22 tes to answer and is worth 10 point Read the question carefully and completely Answers must be written out in paragraph hide paragraph on Outlines, bulleted lits, or diagrams alone are not acceptable
To determine the likelihood that a patient with a bacterial infection who is in the intensive care unit (ICU) of a hospital could be successfully treated with antibiotic therapies, researchers investigated the frequency of setiboe resistance in bacteria isolated from patients in ICUs in the United States from 1994 to 2000 The data from the study are shown in the table, along with the overall change in the frequency of bactual resistance in patient samples from 1994 to 2000
INCIDENCE OF ANTI STANES
3
Using the data, provide justification for the chim that antibiotic resistance may arise in bacterial specses