Bozeman Science
Unit 5 Review - Genetics
Paul Andersen reviews the major concepts within the fifth unit of the new AP Biology framework. He starts with a description of both DNA and RNA. He explains how DNA is copied during the S phase of mitosis. He explains how...
Amoeba Sisters
Protein Synthesis (Updated)
Explore the steps of transcription and translation in protein synthesis! This video explains several reasons why proteins are so important before explaining the roles of mRNA, rRNA, and tRNA in the steps of protein synthesis! Expand...
Amoeba Sisters
Gene Regulation and the Order of the Operon
Explore gene expression with the Amoeba Sisters, including the fascinating Lac Operon found in bacteria! Learn how genes can be turned "on" and "off" and why this is essential for cellular function.
Bozeman Science
Epigenetics
Paul Andersen explains the concepts of genetics. He starts with a brief discussion of the nature vs. nurture debate and shows how epigenetics blurs this distinction. He explains how differentiation of cell types results from the...
Crash Course
DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology
Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins.
Bozeman Science
Operon
In this video Paul Andersen describes the elements of an operon. The promoter allows the RNA polymerase to transcribe the required genes. The operator and repressor regulate the expression of the genes by blocking the RNA polymerase. The...
Bozeman Science
Gene Regulation
Paul Andersen explains how genes are regulated in both prokaryotes and eukaryotes. He begins with a description of the lac and trp operon and how they are used by bacteria in both positive and negative response. He also explains the...
Bozeman Science
Transcription and Translation
Paul Andersen explains the central dogma of biology. He explains how genes in the DNA are converted to mRNA through the process of transcription. He then explains how ribosomes use this message to convert the mRNA to a functioning...
Bozeman Science
DNA and RNA - Part 2
Paul Andersen continues his description of DNA and RNA. He begins with the structure of DNA and RNA and moves into the process of DNA Replication. He also describes the central dogma of biology explaining how DNA is transcribed to mRNA...
Curated Video
How are Proteins Made? - Transcription and Translation Explained #66
This video covers: - The two steps of protein synthesis: transcription and translation - Transcription is the production of mRNA, which is a copy of a gene - Translation is the production of a sequence of amino acids (a polypeptide)...
Curated Video
Protein Synthesis: Transcription
A video explaining and illustrating all steps of transcription.
Catalyst University
Transcription (Partial; no markings; as done in lab)
Transcription (Partial; no markings; as done in lab)
Catalyst University
Transcription Initiation: Sigma and General Transcription Factors
Transcription Initiation: Sigma and General Transcription Factors
Catalyst University
General Ribosome Physiology and Mechanism Part 1
General Ribosome Physiology and Mechanism Part 1
Catalyst University
Post-Transcriptional Modification of mRNA
Post-Transcriptional Modification of mRNA
Curated Video
Understanding Genetic Variants and their Impact on Proteins and Phenotypes
This video discusses genetic variants. The video explains how DNA codes for proteins and how variations in the DNA sequence can lead to alterations in the amino acids and shape of the protein produced, which can lead to changes in the...
Catalyst University
Shine-Dalgarno/Kozak Sequences & 70S Ribosome Assembly
Shine-Dalgarno/Kozak Sequences & 70S Ribosome Assembly
Catalyst University
The Coronavirus Replication Cycle
In this video, I explain how the Coronavirus (COVID-19) infects and replicates inside the host’s cells.
Catalyst University
Telomeres and Telomerase: Aging Theory and Nutritional Applications
Here we discuss shortening of telomeres, factors that affect this phenomenon, and the function of telomerase.
Catalyst University
Purpose & Organization of the Lac Operon
This video discusses in detail the purpose, functions, and organization of the Lac Operon.