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Related Concept Videos

Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

Positive Symptoms of Schizophrenia: Hallucinations and Delusions

Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes loosely...
Heart Sounds01:15

Heart Sounds

Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
Detection of Gross Error: The Q Test01:00

Detection of Gross Error: The Q Test

When one or more data points appear far from the rest of the data, there is a need to determine whether they are outliers and whether they should be eliminated from the data set to ensure an accurate representation of the measured value. In many cases, outliers arise from gross errors (or human errors) and do not accurately reflect the underlying phenomenon. In some cases, however, these apparent outliers reflect true phenomenological differences. In these cases, we can use statistical methods...
Translation01:31

Translation

Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life

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Related Experiment Video

Updated: Jul 4, 2026

Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language
09:27

Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language

Published on: October 13, 2018

What is wrong with what is said?

Hasan Yazici1

  • 1Division of Rheumatology, Department of Medicine, University of Istanbul, Turkey. hyazici@attglobal.net

Bulletin of the NYU Hospital for Joint Diseases
|June 10, 2008
PubMed
Summary
This summary is machine-generated.

Medical research often contains scientific flaws, particularly in randomized controlled trials. The main issue is trying to prove hypotheses instead of falsifying them, which this exercise highlights through scenarios.

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Modeling Verbal Behavior Deficits with the Stimulus Control Ratio Equation, SCoRE
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Modeling Verbal Behavior Deficits with the Stimulus Control Ratio Equation, SCoRE

Published on: May 14, 2019

Related Experiment Videos

Last Updated: Jul 4, 2026

Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language
09:27

Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language

Published on: October 13, 2018

Modeling Verbal Behavior Deficits with the Stimulus Control Ratio Equation, SCoRE
06:57

Modeling Verbal Behavior Deficits with the Stimulus Control Ratio Equation, SCoRE

Published on: May 14, 2019

Area of Science:

  • Medical Research Methodology
  • Clinical Trial Design
  • Scientific Integrity

Background:

  • Randomized controlled trials (RCTs) are a cornerstone of medical evidence.
  • Systematic flaws can undermine the validity of research findings.
  • The principle of falsification is crucial for scientific progress.

Purpose of the Study:

  • To identify and illustrate common scientific flaws in medical research.
  • To emphasize the importance of falsifying, rather than proving, study hypotheses.
  • To provide an educational tool for researchers and students.

Main Methods:

  • Development of an interactive educational exercise.
  • Creation of short, illustrative scenarios depicting research flaws.
  • Focus on flaws related to hypothesis testing in randomized controlled trials.

Main Results:

  • Identified uniform scientific flaws in medical research.
  • Highlighted the tendency to attempt to prove hypotheses.
  • Demonstrated how this impacts the reliability of randomized controlled trials.

Conclusions:

  • The bias towards proving hypotheses is a significant, uniform flaw in medical research.
  • Falsification should be the primary goal in hypothesis testing.
  • Educational interventions can help mitigate these research design flaws.