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The Ethylene Response in Plants Involves a Dimeric Transmembrane Receptor $\text { ABSENCE OF ETHYLENE }$

question 55

Multiple Choice

The ethylene response in plants involves a dimeric transmembrane receptor.When the receptor is not bound to ethylene, the receptor binds to and activates a protein kinase, which activates an intracellular signaling pathway that leads to the degradation of a transcriptional regulator important for transcribing the ethylene-responsive genes (see Figure 16-33) .You discover a phosphatase that is important for ethylene signaling, and you name it PtpE.Plants lacking PtpE never turn on ethylene-responsive genes, even in the presence of ethylene.You find that PtpE dephosphorylates serine 121 on the transcriptional regulator.Furthermore, plants lacking PtpE degrade the transcriptional regulator in the presence of ethylene. (A) $\text { ABSENCE OF ETHYLENE }$
$The ethylene response in plants involves a dimeric transmembrane receptor.When the receptor is not bound to ethylene, the receptor binds to and activates a protein kinase, which activates an intracellular signaling pathway that leads to the degradation of a transcriptional regulator important for transcribing the ethylene-responsive genes (see Figure 16-33) .You discover a phosphatase that is important for ethylene signaling, and you name it PtpE.Plants lacking PtpE never turn on ethylene-responsive genes, even in the presence of ethylene.You find that PtpE dephosphorylates serine 121 on the transcriptional regulator.Furthermore, plants lacking PtpE degrade the transcriptional regulator in the presence of ethylene. (A) \text { ABSENCE OF ETHYLENE } (B) \text { PPESENCE OF ETHYLENE } Figure 16-33 Which of the following statements is inconsistent with your data? A) When the transcriptional regulator is phosphorylated, it activates transcription of the ethylene-responsive genes. B) When the transcriptional regulator is not phosphorylated, it binds to DNA. C) Activation of the protein kinase that binds to the ethylene receptor leads to inactivation of PtpE. D) Binding of ethylene to its receptor leads to the activation of PtpE.$

(B) $\text { PPESENCE OF ETHYLENE }$
$The ethylene response in plants involves a dimeric transmembrane receptor.When the receptor is not bound to ethylene, the receptor binds to and activates a protein kinase, which activates an intracellular signaling pathway that leads to the degradation of a transcriptional regulator important for transcribing the ethylene-responsive genes (see Figure 16-33) .You discover a phosphatase that is important for ethylene signaling, and you name it PtpE.Plants lacking PtpE never turn on ethylene-responsive genes, even in the presence of ethylene.You find that PtpE dephosphorylates serine 121 on the transcriptional regulator.Furthermore, plants lacking PtpE degrade the transcriptional regulator in the presence of ethylene. (A) \text { ABSENCE OF ETHYLENE } (B) \text { PPESENCE OF ETHYLENE } Figure 16-33 Which of the following statements is inconsistent with your data? A) When the transcriptional regulator is phosphorylated, it activates transcription of the ethylene-responsive genes. B) When the transcriptional regulator is not phosphorylated, it binds to DNA. C) Activation of the protein kinase that binds to the ethylene receptor leads to inactivation of PtpE. D) Binding of ethylene to its receptor leads to the activation of PtpE.$
Figure 16-33
Which of the following statements is inconsistent with your data?

Definitions:

Null Hypothesis

A hypothesis in statistical testing that suggests there is no statistical significance between the specified sets of observations, effectively stating that any observed difference is the result of random chance.

Level of Significance

A threshold in hypothesis testing that determines whether an observed effect is statistically significant.

Diverse Individuals

People who exhibit differences in various attributes such as cultural background, race, religion, gender identity, and life experiences.

Sample Size

The number of individuals or observations included in a study, which can significantly impact the statistical power and conclusions drawn.

The Ethylene Response in Plants Involves a Dimeric Transmembrane Receptor ABSENCE OF ETHYLENE \text { ABSENCE OF ETHYLENE } ABSENCE OF ETHYLENE

Definitions:

The Ethylene Response in Plants Involves a Dimeric Transmembrane Receptor $\text { ABSENCE OF ETHYLENE }$