RNA Interference
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Questions and Answers

Which type of statistics should strictly be used on interval and/or ratio data?

  • Descriptive statistics
  • Non-parametric statistics
  • Inferential statistics (correct)
  • Parametric statistics
  • What is the key difference between interval and ratio data?

  • Interval data can be used for inferential statistics, while ratio data cannot.
  • Interval data is discrete, while ratio data is continuous.
  • Ratio data has a true zero point, while interval data does not. (correct)
  • Ratio data has a higher level of precision than interval data.
  • What is the purpose of normalizing data in statistical analysis?

  • To increase the precision of the data
  • To convert ordinal data into interval data
  • To make the data mutually exclusive and exhaustive
  • To compare or combine data from different scales of measurement (correct)
  • What should be the attributes of all measures in surveys using closed questions?

    <p>Mutually exclusive and exhaustive</p> Signup and view all the answers

    What is the main advantage of using multiple measures of the same variable?

    <p>It enhances stability and reliability of the data</p> Signup and view all the answers

    In what type of scale is the Likert scale categorized?

    <p>Ordinal</p> Signup and view all the answers

    What is the main challenge with RNAi?

    <p>Delivering synthetic RNA molecules into the cells that matter</p> Signup and view all the answers

    What is the length of small strands of RNA molecules involved in RNAi?

    <p>About 22 units long</p> Signup and view all the answers

    Who won the 2006 Nobel Prize for their pioneering research into RNAi?

    <p>Andrew Fire and Craig Mello</p> Signup and view all the answers

    What is the potential application of RNAi in medical treatments?

    <p>Improving the efficacy and safety of anti-cancer drugs</p> Signup and view all the answers

    What is the role of RNAi in addressing previously untreatable illnesses?

    <p>Offering potential cures for various disorders</p> Signup and view all the answers

    Who has put resources behind RNAi, heading a brain research institute and forming a company to develop the technique?

    <p>Phillip Sharp</p> Signup and view all the answers

    What did the Nobel Assembly state about the current use of RNAi?

    <p>RNAi is already being widely used in basic science to study gene function and may lead to novel therapies in the future</p> Signup and view all the answers

    What was the initial focus of the research on RNAi?

    <p>Nematode worms</p> Signup and view all the answers

    What led to the understanding of RNAi's potential medical applications?

    <p>Silencing genes in fruit flies and plants</p> Signup and view all the answers

    What contradicted established biological principles and opened up new possibilities in medical science?

    <p>RNA interference</p> Signup and view all the answers

    What did David Baulcombe's research on viral resistance in plants contribute to?

    <p>Understanding of foreign RNA mimicking viruses</p> Signup and view all the answers

    What did the test tube experiments demonstrate about RNAi's medical potential?

    <p>Making human cells resistant to viruses</p> Signup and view all the answers

    What did Andrew Fire and Craig Mello win the 2006 Nobel Prize in medicine for?

    <p>RNAi research</p> Signup and view all the answers

    What are the options for dealing with missing data?

    <p>Removing cases, replacing with the mean score, an educated guess, or a random value</p> Signup and view all the answers

    What is the main difference between basic and applied research?

    <p>Basic research seeks to advance knowledge and is theoretical, while applied research seeks solutions to real-world problems and is non-theoretical</p> Signup and view all the answers

    What did Andrew Fire's research on gene 'silencing' in nematode worms reveal?

    <p>The phenomenon was similar to the original petunia experiment</p> Signup and view all the answers

    What is the primary purpose of basic research?

    <p>To advance knowledge and contribute to 'new' knowledge</p> Signup and view all the answers

    What was the outcome of the case study involving a plant scientist's research on petunia flowers?

    <p>It led to a breakthrough in gene regulation understanding</p> Signup and view all the answers

    What are the two research purposes mentioned in the text?

    <p>Descriptive and explanatory</p> Signup and view all the answers

    What are the options for dealing with missing data?

    <p>Removing cases, replacing with the mean score, an educated guess, or a random value</p> Signup and view all the answers

    What are the two main purposes of research mentioned in the text?

    <p>Basic and applied</p> Signup and view all the answers

    What distinguishes basic research from applied research?

    <p>Basic research seeks to advance knowledge and is theoretical, while applied research seeks solutions to real-world problems and is non-theoretical</p> Signup and view all the answers

    What did the case study involving a plant scientist's research on petunia flowers lead to?

    <p>A breakthrough in gene regulation understanding</p> Signup and view all the answers

    What was discovered through unexpected outcomes in research on nematode worms?

    <p>Antisense technology and gene 'silencing' processes</p> Signup and view all the answers

    What did Andrew Fire's research on gene 'silencing' in nematode worms reveal?

    <p>The phenomenon was similar to the original petunia experiment</p> Signup and view all the answers

    What did Andrew Fire and Craig Mello discover in 1998?

    <p>RNA interference (RNAi), a process where double-stranded RNA can silence genes</p> Signup and view all the answers

    What was the result of David Baulcombe's research on viral resistance in plants?

    <p>Understanding that foreign RNA mimicked viruses, contributing to the fundamental understanding of RNAi</p> Signup and view all the answers

    What did scientists find small stretches of double-stranded RNA interfering with, leading to a realization about tailored targeting of specific genes?

    <p>Gene action in fruit flies and plants</p> Signup and view all the answers

    What was recognized about RNAi's medical potential?

    <p>Turning off cancer-related genes, preventing virus infections, and treating tissue rejection and liver disease</p> Signup and view all the answers

    What did the test tube experiment with human cells and RNAi prompt research into?

    <p>Introducing short RNA strands directly into cells for medical use</p> Signup and view all the answers

    What did Andrew Fire and Craig Mello win the 2006 Nobel Prize in medicine for?

    <p>Their RNAi research</p> Signup and view all the answers

    Study Notes

    How a Petunia Experiment Led to Breakthrough in Cancer and AIDS Treatment

    • In 1998, Andrew Fire and Craig Mello discovered RNA interference (RNAi), a process where double-stranded RNA can silence genes, contradicting the established "central dogma" of biology.
    • David Baulcombe's research on viral resistance in plants led to the understanding that foreign RNA mimicked viruses, contributing to the fundamental understanding of RNAi.
    • Scientists found small stretches of double-stranded RNA interfering with gene action in fruit flies and plants, leading to the realization that short, double-stranded RNAs could be tailored to target specific genes.
    • RNAi's medical potential for turning off cancer-related genes, preventing virus infections, and treating tissue rejection and liver disease was recognized.
    • In the test tube, scientists made human cells resistant to the polio virus and HIV using RNAi, prompting research into introducing short RNA strands directly into cells for medical use.
    • Andrew Fire and Craig Mello won the 2006 Nobel Prize in medicine for their RNAi research, which was initially conducted on nematode worms and later found to occur in human cells.
    • RNAi is being widely used in basic science to study gene function and holds promise for novel therapies in the future, according to the Nobel Assembly.
    • The discovery of RNAi contradicted established biological principles and opened up new possibilities in medical science.
    • The research on RNAi was initially focused on nematode worms and later expanded to human cells, demonstrating its potential for clinical treatments.
    • RNAi has the potential to be a groundbreaking development in medical science and has already shown promise in basic science research.
    • The discovery of RNAi led to the development of a process where double-stranded RNA can silence genes, contradicting established biological principles.
    • RNAi has the potential to be a groundbreaking development in medical science, with applications ranging from heart disease to cancer treatment.

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    Description

    Explore the groundbreaking technique of RNA interference (RNAi) and its potential in revolutionizing medical treatments. Learn about the Nobel Prize-winning research, the applications of RNAi in targeting specific genes for various disorders, and the challenges and promises associated with this technique. Additionally, delve into the types of research and strategies for dealing with missing data in scientific studies, gaining insights into the different research purposes and their impact on advancing knowledge and solving real-world problems.

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