Showing posts with label Mitosis. Show all posts
Showing posts with label Mitosis. Show all posts

Thursday, February 26, 2009

Quick Graphic Diagrams of improtant processes in Bio Technology (brought to you by The National Health Museum)



The National Health Museum's Graphics Gallery (click here) is a series of labeled diagrams with explanations representing the important processes of biotechnology. Each diagram is followed by a summary of information, providing a context for the process illustrated. The entire resource as been posted below for your convenience.



From Gene to Function

The major actors of molecular biology: the nucleic acids, DNA and RNA.
How they carry and transfer genetic information from one cell generation to the next and translate this coded information into active proteins.

Building Blocks

From atoms to molecules and cells to tissues, a study of structure and function.

Biochemistry:

Cells:

Tissues:

Chromosomes and Cell Division

Eucaryotic cell duplication: how chromosomes and genes transmit the information from one mother cell to subsequent generations.

Biological Engineering

From the existing techniques of DNA cloning to gene therapy: understanding the present and a look at the future of genetic engineering.

Genetics

From Mendel to hemophilia: introduction to the major principles of heredity. biological inheritance influences what and who we are.

Viruses

Genetic messengers surrounded by a protein coat.

Cell Processes

Cells and how they operate

Communication:

Energy:

Immunity:

Specialized Processes:

Transportation:

Tuesday, February 10, 2009

Reminder: Know Your Cell Phases

Don't embarrass yourself getting all confused about the phases. Wield the power of acronyms! Ok. What can we make with IPMAT? Hmmm Inter. Pro. Meta. Ana. Telo..... I got it! Memorize this phrase... INTERnet PROfessionals whisper METAphors to ANA on the TELOphone. Then just ad your "-phases" to the end and your all set. Now there is no excuse! INTERnet PROfessionals whisper METAphors to ANA on the TELOphone!

The life cycle of the cell is typically divided into 5 major phases. The phases are listed below, along with the major events that occur during each phase Quoted from Source
Interphase. The cell is engaged in metabolic activity and performing its duty as part of a tissue. The DNA duplicates during interphase to prepare for mitosis (the next four phases that lead up to and include nuclear division). Chromosomes are not clearly discerned in the nucleus, although a dark spot called the nucleolus may be visible.
Prophase. Chromatin in the nucleus begins to condense and becomes visible in the light microscope as chromosomes. The nuclear membrane dissolves, marking the beginning of prometaphase. Proteins attach to the centromeres creating the kinetochores. Microtubules attach at the kinetochores and the chromosomes begin moving.
Metaphase. Spindle fibers align the chromosomes along the middle of the cell nucleus. This line is referred to as the metaphase plate. This organization helps to ensure that in the next phase, when the chromosomes are separated, each new nucleus will receive one copy of each chromosome.
Anaphase. The paired chromosomes separate at the kinetochores and move to opposite sides of the cell. Motion results from a combination of kinetochore movement along the spindle microtubules and through the physical interaction of polar microtubules.
Telophase. New membranes form around the daughter nuclei while the chromosomes disperse and are no longer visible under the light microscope. Cytokinesis or the partitioning of the cell may also begin during this stage.

Thursday, February 5, 2009

GENIE's Virtual Genetics Education Centre





This site is a gem. I will be highlighting different sections of it in the future, but wanted to give you a general link just in case you can't wait to poke around it yourself. --------->Make sure to click on the resources link for each section! <---------- http://www.le.ac.uk/ge/genie/vgec/index.html

About The Virtual Genetics Education Centre:
* is a growing and evolving collection of teaching and learning materials on all aspects of genetics
* encourages collaboration in the development, evaluation and sharing of genetics education resources
* provides information and genetics education resources for higher education, colleges, schools, health professionals and the general public
* explores innovative approaches to teaching and learning in genetics
* provides links to, and evaluates, other sources of information and educational material about genetics.


The links are sorted by difficulty from "School/College" level all the way to "health professional" level.

Schools and Colleges Level Links
Introduction

Main Page DNA, genes and chromosomes
Resource Page

Main Page The cell cycle, mitosis and meiosis
Resource Page

Main Page Gene expression and regulation
Resource Page

Main Page Developmental genetics
Resource Page

Main Page Patterns of inheritance
Resource Page

Main Page Population genetics
Resource Page

Main Page Recombinant DNA and genetic techniques
Resource Page

Main Page Genomics and the Human Genome Project
Resource Page

Higher Education Level Links:
Introduction
Main Page DNA, genes and chromosomes
Resource Page

Main Page The cell cycle, mitosis and meiosis
Resource Page

Main Page Gene expression and regulation
Resource Page

Main Page Developmental genetics
Resource Page

Main Page Patterns of inheritance
Resource Page

Main Page Population genetics
Resource Page

Main Page Recombinant DNA and genetic techniques
Resource Page

Main Page Genomics and the Human Genome Project
Resource Page

Health Professionals Level
Link to Resources

Tuesday, February 3, 2009

AMERICAN SOCIETY FOR CELL BIOLOGY: iBioSeminars!!

Thank you ASCB for posting your iBioSeminars! I am so happy we just found all these videos! I'm going to make some popcorn.



Bonnie Bassler, Bacterial Communication New!
Catherine Dulac, Odorant and Pheromone Signaling New!
Richard Losick, Bacterial Development New!
Satyajit Mayor, Lipid Rafts
Martin Raff, Size Regulation
Randy Schekman, Protein Secretion Vesicle/Trafficking
Julie Theriot, Actin and Cell Motility
Ron Vale, Molecular Motors and Mitosis


Mary Beckerle, Adhesion, Signaling, and Cancer
Elizabeth Blackburn, Telomeres, Aging, and Cancer New!
Brian Druker, Signaling and Cancer Chemotherapy
Elaine Fuchs, Stem Cells
Cynthia Kenyon, Mechanisms of Aging
Susan Lindquist, Prions and Protein Folding New!
Ira Mellman, Cell Biology of the Immune Response New!
Jeremy Nathans, Vertebrate Retina New!
Toto Olivera, Cone Snail Toxins and Medicine
Xiaodong Wang, Apoptosis


Chaitan Khosla, Polyketide Biosynthesis
Stephen Mayo, Computational Protein Design New!


Alejandro Sanchez Alvarado, Regeneration
Sydney Brenner, Genomes and Evolution New!
Marc Kirschner, Evolution of Vertebrates New!
Nicole Le Douarin, Neural Crest in Development New!


Norma Andrews, Cell Biology of Parasitic Disease
David Baltimore, HIV
Roger Beachy, Plant Viruses and Crops New!
Joseph DeRisi, Malaria
Stan Falkow, Host-Pathogen Interactions
John McKinney, Tuberculosis
David Roos, Toxoplasma, Parasite Evolution, & Bionformatics New!
Lucy Shapiro, Bacterial Cell Dynamics and Global Epidemics
Chris Somerville, Biofuels