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Difficulty: MediumRhetorical Synthesis: Comparison and Contrast

While researching two types of fluorescent proteins, a student took the following notes:
* Green fluorescent protein (GFP) is derived from the jellyfish *Aequorea victoria*.
* GFP exhibits a peak excitation wavelength of 395 nanometers (nm).
* GFP emits green light at a peak wavelength of 509 nm.
* Engineered red fluorescent protein (RFP) variants are derived from the sea anemone *Discosoma* species.
* RFP variants exhibit a peak excitation wavelength of 558 nm.
* RFP variants emit red light at a peak wavelength of 583 nm.

The student wants to contrast the peak excitation wavelengths of GFP and RFP. Which choice most effectively uses information from the given notes to accomplish this goal?

  1. While GFP has a peak excitation wavelength of 395 nm, RFP variants exhibit a peak excitation wavelength of 558 nm.Answer
  2. B
    GFP is derived from the jellyfish *Aequorea victoria*, whereas RFP variants are derived from *Discosoma* species of sea anemone.
  3. C
    GFP emits green light at a peak wavelength of 509 nm, while RFP variants emit red light at a peak wavelength of 583 nm.
  4. D
    GFP has a peak excitation wavelength of 395 nm, and it is derived from the jellyfish *Aequorea victoria*.

Answer

The statement that contrasts the peak excitation wavelengths of GFP (395 nm) and RFP variants (558 nm) is the correct choice.
The option that contrasts the peak excitation wavelengths of GFP (395 nm) and RFP variants (558 nm) directly accomplishes the student's rhetorical goal by selecting the correct metrics from the notes and presenting them in a comparative structure.

Step-by-Step Solution

1
Identify the student's goal in the prompt.
The goal is to contrast the peak excitation wavelengths of GFP and RFP.
The prompt specifies that the student wants to contrast the peak excitation wavelengths.
2
Locate the relevant facts in the notes.
The notes state that GFP has a peak excitation wavelength of 395 nm and RFP variants have a peak excitation wavelength of 558 nm.
This information directly addresses the specific metrics the student wants to contrast.
3
Evaluate the choices to find the one that performs this contrast.
The choice stating that GFP has a peak excitation wavelength of 395 nm while RFP variants exhibit a peak excitation wavelength of 558 nm successfully accomplishes this.
It compares the correct metrics for both proteins using accurate facts from the notes.

Key Concept

Rhetorical Synthesis: Comparison and Contrast
Estimated Time:1m 0s
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Topics

Rhetorical Synthesis: Comparison and Contrast

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