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Researchers hope to design an assay to measure the progression of apoptosis in live cells in real time. Which of the following four methods is the most promising avenue to pursue in order to develop this assay?
  • a)
    Detecting increases in cytoplasmic concentrations of cytochrome c
  • b)
    Measuring decreases in mitochondrial volume
  • c)
    Detecting increases in mitochondrial concentrations of cytochrome c
  • d)
    Measuring increases in cytoplasmic volume
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Researchers hope to design an assay to measure the progression of apop...
During apoptosis, cytochrome c is released from the mitochondria into the cytoplasm. This release is a key step in the activation of the apoptotic pathway. By detecting increases in cytoplasmic concentrations of cytochrome c, researchers can monitor the progression of apoptosis in real time. Various techniques, such as fluorescence microscopy or flow cytometry, can be employed to detect and quantify cytochrome c levels in the cytoplasm of live cells.
Measuring decreases in mitochondrial volume (Option B) or increases in mitochondrial concentrations of cytochrome c (Option C) are not typically used as direct indicators of apoptosis progression. Changes in mitochondrial volume or cytochrome c levels may occur during apoptosis, but they may not be as reliable or direct measures of apoptosis progression as the changes occurring in the cytoplasm.
Measuring increases in cytoplasmic volume (Option D) may not be a specific indicator of apoptosis since changes in cell volume can be influenced by various cellular processes unrelated to apoptosis.
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Researchers hope to design an assay to measure the progression of apop...


Why option 'A' is the most promising avenue to develop the assay:




Detecting increases in cytoplasmic concentrations of cytochrome c:
- Cytochrome c is a protein released from mitochondria during apoptosis
- Increase in cytoplasmic cytochrome c indicates mitochondrial membrane permeabilization, a hallmark of apoptosis
- Detection of cytochrome c can provide real-time monitoring of apoptosis progression in live cells
- This method allows for direct observation of the initiation of apoptosis process
- Cytochrome c release is an early event in apoptosis, making it a sensitive marker for detecting cell death

By using this method, researchers can accurately measure the progression of apoptosis in live cells in real time, providing valuable insights into the dynamics of cell death processes.
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Researchers hope to design an assay to measure the progression of apoptosis in live cells in real time. Which of the following four methods is the most promising avenue to pursue in order to develop this assay?a)Detecting increases in cytoplasmic concentrations of cytochrome cb)Measuring decreases in mitochondrial volumec)Detecting increases in mitochondrial concentrations of cytochrome cd)Measuring increases in cytoplasmic volumeCorrect answer is option 'A'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Researchers hope to design an assay to measure the progression of apoptosis in live cells in real time. Which of the following four methods is the most promising avenue to pursue in order to develop this assay?a)Detecting increases in cytoplasmic concentrations of cytochrome cb)Measuring decreases in mitochondrial volumec)Detecting increases in mitochondrial concentrations of cytochrome cd)Measuring increases in cytoplasmic volumeCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Researchers hope to design an assay to measure the progression of apoptosis in live cells in real time. Which of the following four methods is the most promising avenue to pursue in order to develop this assay?a)Detecting increases in cytoplasmic concentrations of cytochrome cb)Measuring decreases in mitochondrial volumec)Detecting increases in mitochondrial concentrations of cytochrome cd)Measuring increases in cytoplasmic volumeCorrect answer is option 'A'. Can you explain this answer?.
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