New Video Posted: Cellular Membranes: Moving material and information across the membranes - membrane transport

In this video, Cellular Membranes: Moving material and information across the membranes - membrane transport, I look at how the cell resolves the issue of membranes preventing ions, molecules and information from entering or leaving the cell. That is, how do we transport such things across the membrane?

In this video, I examine cellular transport and how proteins facilitate the crucial exchange of molecules, ions, and information across cell membranes. The video explains both passive and active transport mechanisms and highlights the specialised roles of carrier and channel proteins in these processes.

This is one of four videos on membranes, the other two being:

• Cellular Membranes: Protection, Structure, and Function
• Cellular Membranes: The role of proteins in the membranes
• Cellular Membranes: Moving material and information across the membranes - membrane transport
• Cellular Membranes: Moving information across the membrane - the receptors

If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm

Blog Bonus: Free information sheet summarising the video and defining the key terms - download.

 

Additional Reading

The video was produced with help from the following resources:

• 📗 - The Biosciences Glossary
• 📗 - Molecular Biology of the Cell (Alberts) - (affiliate link)
• 📗 - Molecular Cell Biology (Lodish) - (affiliate link)
• 📗 - Biochemistry (Stryer) - (affiliate link)

New Video Posted: Cellular Membranes: The role of proteins in the membranes

In this video, Cellular Membranes: The role of proteins in the membranes, I look at the problem of getting material and information in and out of the cell and the role proteins play.

I introduce the eight ways proteins can interact with membranes: single and multiple membrane-spanning proteins, beta barrels, and proteins anchored by lipid chains or other proteins. ion transport, enzymatic reactions, and signal transduction. The video also covers the function of some protein domains (SH2 and SH3 domains, PH domains, and PTB domains) and some of the functions carried out by proteins in the membrane, such as the transport of ions, molecules and information.

This is one of four videos on membranes, the other two being:

• Cellular Membranes: Protection, Structure, and Function
• Cellular Membranes: The role of proteins in the membranes
• Cellular Membranes: Moving material and information across the membranes - membrane transport
• Cellular Membranes: Moving information across the membrane - the receptors

If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm

Blog Bonus: Free information sheet summarising the video and defining the key terms - download.

 

Additional Reading

The video was produced with help from the following resources:

• 📗 - The Biosciences Glossary
• 📗 - Molecular Biology of the Cell (Alberts) - (affiliate link)
• 📗 - Molecular Cell Biology (Lodish) - (affiliate link)
• 📗 - Biochemistry (Stryer) - (affiliate link)

New video posted: Cellular Membranes: Protection, Structure, and Function

In this video - Cellular Membranes: Protection, Structure, and Function, I introduce cell (biological) membranes and discuss why cells have membranes, the problems they solve and the problems they cause.

The video also looks at the structure of the plasma membrane and the membranes surrounding the organelles.

This is one of four videos on membranes, the other two being:

• Cellular Membranes: Protection, Structure, and Function
• Cellular Membranes: The role of proteins in the membranes
• Cellular Membranes: Moving material and information across the membranes - membrane transport
• Cellular Membranes: Moving information across the membrane - the receptors

If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm

Blog Bonus: Free information sheet summarising the video and defining the key terms - download.

 

Additional Reading

The video was produced with help from the following resources:

• 📗 - The Biosciences Glossary
• 📗 - Molecular Biology of the Cell (Alberts) - (affiliate link)
• 📗 - Molecular Cell Biology (Lodish) - (affiliate link)
• 📗 - Biochemistry (Stryer) - (affiliate link)

New eBook Available: Maths and Chemistry Refresher for Life and Biomedical Scientists

I have a new eBook available on Google Play Books - Maths and Chemistry Refresher for Life and Biomedical Scientists.

Maths and Chemistry Refresher
for Life and Biomedical Scientists

The book is a refresher for life, biomedical sciences and chemistry students who may be a little unsure of some of the key maths and chemistry skill they need and covers:

• Elements, atoms, ions, molecules, and compounds
• Atomic weight, isotopes and molecular weight
• Amounts, volumes, and concentrations
• The SI units and the SI unit prefixes (m, µ, n, p etc.)
• Scientific Notation
• Dealing with unit prefixes (m, µ, n, p etc.) in calculations 
• Order of operations (BODMAS and PEMDAS) in maths
• How to get the best out of your calculator
• Maths 'tricks' — Logs
• And, graphs

New video posted: Understanding Meiosis: The Process of Germ Cell Division

In this video on Understanding Meiosis: The Process of Germ Cell Division, I look at meiosis.

In the video, I discuss why meiosis is important, meiosis I and II, the key steps in Prophase I (Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis), and the consequence when it goes wrong.

If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm

Blog Bonus: Free information sheet summarising the video and defining the key terms - download.

 

Additional Reading

The video was produced with help from the following resources:

• 📗 - The Biosciences Glossary
• 📗 - Molecular Biology of the Cell (Alberts) - (affiliate link)
• 📗 - Molecular Cell Biology (Lodish) - (affiliate link)
• 📗 - Biochemistry (Stryer) - (affiliate link)

New video posted: Understanding Mitosis: The Essential Guide to Cell Division

I have posted a cell biology revision video called "Understanding Mitosis: The Essential Guide to Cell Division" in which I go over the key steps in mitosis - Prophase, Prometaphase, Metaphase, Anaphase, Telophase and Interphase.

If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm

Blog Bonus: Free information sheet summarising the video and defining the key terms - download.

 

Additional Reading

The video was produced with help from the following resources:

• 📗 - The Biosciences Glossary
• 📗 - Molecular Biology of the Cell (Alberts) - (affiliate link)
• 📗 - Molecular Cell Biology (Lodish) - (affiliate link)
• 📗 - Biochemistry (Stryer) - (affiliate link)

New video posted: Cell Growth vs. Cell Proliferation (the cell cycle) Explained

In this video, I examine cell growth (hypertrophy) and proliferation (hyperplasia), with the content mainly focused on hyperplasia and the cell cycle.

The cell cycle is a sophisticated series of events that cells undergo to duplicate themselves. It's divided into four main phases:

• G1 Phase: The cell grows and synthesises proteins (cells may sit in G0 phase before entering G1).
• S Phase: Chromosomes are duplicated.
• G2 Phase: The cell prepares for mitosis.
• M Phase: Mitosis occurs, and chromosomes are separated into daughter cells.

Most of a cell's life is spent in the interphase, which includes the G1 (G0), S, and G2 phases. This period is crucial for the cell as it performs its regular functions, replicates proteins, synthesises RNAs, and maintains organelles.

The cycle is regulated by the Mitosis-Promoting Factor (MPF), consisting of cyclin and cyclin-dependent kinase (Cdk). These proteins are essential for the progression of the cell cycle, particularly in phosphorylating specific amino acids on proteins that need to be activated or deactivated for the cycle to proceed.

If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm

Blog Bonus: Free information sheet summarising the video and defining the key terms - download.

 

Additional Reading

The video was produced with help from the following resources:

• 📗 - The Biosciences Glossary
• 📗 - Molecular Biology of the Cell (Alberts) - (affiliate link)
• 📗 - Molecular Cell Biology (Lodish) - (affiliate link)
• 📗 - Biochemistry (Stryer) - (affiliate link)