Micro RNAs and Gene Regulation

This video tutorial explains micro RNAs, a class of non-coding RNAs crucial for gene regulation. It covers their biogenesis, function, and specificity in different tissues and cells. The video also discusses the role of micro RNAs in diseases like cancer and methods to study them experimentally. Viewers are encouraged to explore additional resources and support the channel.

What is the primary role of micro RNAs in cells?

• To regulate gene expression

• To replicate DNA

• To transport molecules

• To encode proteins

Which enzymes are involved in the initial processing of primary micro RNA transcripts?

• Dicer and Argonaut

• Drosha and DGCR8

• Polymerase and Ligase

• Helicase and Topoisomerase

Where do micro RNAs most commonly bind on mRNA?

• 5' untranslated region

• Coding region

• 3' untranslated region

• Promoter region

How can micro RNAs regulate gene expression without degrading mRNA?

• By enhancing ribosome binding

• By modifying DNA

• By blocking translation

• By increasing mRNA stability

What determines the cell-specific presence of micro RNAs?

• The cell's location in the body

• The presence of specific transcription factors

• The type of proteins they encode

• The cell's metabolic rate

In the context of cell fate, what role do micro RNAs play?

• They suppress specific gene expression modules

• They repair damaged DNA

• They encode master regulatory proteins

• They initiate cell division

Which fluid is mentioned as containing micro RNAs?

• Blood plasma

• Cerebrospinal fluid

• Lymphatic fluid

• Synovial fluid

What is a cost-effective method to study a few specific micro RNAs?

• Quantitative real-time PCR

• Mass spectrometry

• Western blotting

• Small RNA sequencing

How can the localization of micro RNAs within a cell be visualized?

• Nuclear magnetic resonance

• Electron microscopy

• Fluorescence in situ hybridization

• X-ray crystallography

What is the purpose of using a reporter assay in micro RNA studies?

• To visualize protein folding

• To assess micro RNA regulation of target mRNA

• To measure DNA replication

• To determine cell membrane integrity