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  • Biology-Online • View topic - Are Globular Proteins just red Blood cells?
    blood red blood cells Are all red blood cells enzymes What else in the blood is spherical What is in the blood other than platelets red blood cells white blood cells pathogens and plasma Reply with quote venus666 venus666 Posts 8 Joined Wed Jun 24 2015 9 36 am Thu Oct 15 2015 7 38 am Protein is more of blood cells protein is the fundamental substance of living structures

    Original URL path: http://www.biology-online.org/biology-forum/about42946.html (2016-02-17)
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  • Biology-Online • View topic - Totipotent Stem Cell From Molecular Components
    Mon Sep 14 2009 7 12 pm Re Totipotent Stem Cell From Molecular Components Tue May 13 2014 5 04 pm A1 good luck even Venter haven t managed that yet A3 and how will you get the protein Are you really sure that the stemm cells contain all protein in the same amount A4 amplicon is the result of PCR You need some template though in your case probably the DNA Reply with quote caters caters Posts 3 Joined Sun Feb 02 2014 10 56 pm Re Totipotent Stem Cell From Molecular Components Fri Aug 01 2014 1 42 am I am not saying of protein x of protein y In fact this is almost never the case Rather I am saying that for a particular protein in my stem cell at least the amount of that particular protein is the average of the gene expression in of strands of mRNA 100 I am getting the protein this way I take the results of PCR and put it in a test tube with RNA polymerases Ribosomes and other proteins that help with protein synthesis I then look at the structure of the protein as is and inside a cell every single bond and change the structure if needed Last but not least before I put the protein in the organelle I separate it from the protein synthesis enzymes using a centrifuge As far as the DNA side of things first I do DNA extraction in this case of my own DNA I then separate the chromosomes using differential centrifugation Next I put it in an incubator with the same DNA replication enzymes as the ones in the cell at human body conditions and leave it there for 1 week where it replicates at a pace of once every 8

    Original URL path: http://www.biology-online.org/biology-forum/about37082.html (2016-02-17)
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  • Biology-Online • View topic - Contamination in cells?
    pm Hello In the past we had a contamination caused by E coli in our lab Now I am not sure if our cells are ok or not Could you please help me I am attaching two photos whta do you think about it Thanks for helping us Attachments Gram coloration of our cells Cells fixed and colored using crystal violet in methanol Post a reply Jump to Select a

    Original URL path: http://www.biology-online.org/biology-forum/about42893.html (2016-02-17)
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  • Biology-Online • View topic - AP Biology Homework Help
    genetic code I read about various scientists involved in decoding the genetic code but none of them are listed in the answer choice So I m starting to doubt whether or not B is correct 2 Cells reproduce asexually by process of A meiosis B mitosis C sporogenesis D abiogenesis E segagenesis I was torn between B and C I read that sporogenesis is a form of asexual reproduction but so is mitosis I read online that sometimes sporogenesis is not asexual so that s why I went with B but I m not too sure 3 Sweat glands of sea birds concentrate salt from the blood and then excrete it outside of the body What process allows this concentration of salts A diffusion B osmosis C active transport D dialysis For this one I put dialysis because according to the online definition of dialysis it s the process of removing waste and excess fluids from the body But I read a few articles about the sweat glands of sea birds but none of them mentioned anything about process dialysis so I m not too confident about this answer Use the following organ system choices for the questions that follow A circulatory B nervous C digestive D skeletal E muscular 1 allows movement 2 peristalsis These two questions gave me headaches For 1 I was torn between nervous skeletal and muscular I read that the skeletal and the muscular system work together for movement But only one of them is the right answer Also I was thinking nervous system because the nervous system sends signals to parts of your body which could control movement For 2 I was torn between digestive and muscular According to the definition of peristalsis it is a series of wave like muscle contractions that moves

    Original URL path: http://www.biology-online.org/biology-forum/about42880.html (2016-02-17)
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  • Biology-Online • View topic - Cellular division and endoplasmic reticle
    56 pm Hi guys I have a question for you I know that the endoplasmic reticulum increases its dimensions when we assume a lot of drugs so also the tolerance to these drugs increases but during the cell s duplication does the endoplasmic reticulum maintain these characteristics Thank you in advance Reply with quote GustavClark GustavClark Posts 3 Joined Wed Sep 02 2015 9 48 am Wed Sep 02 2015 10 11 am Hi its been a while since you posted this but in case your still nterested The ER is a dynamic system it expands and contracts according to demand During cell division I would expect it to be stripped down to the minimum required to support the cell What is more relevant to your question is whether the daughter cells rebuild the ER to the state it was in the parent That depends on whether the parent DNA was epigenetically modified to continue the drup induced gene expression I do not have data for many drugs but for alcohol there is an increase in tolerance with age probably due to increased production of detoxication enzymes That does imply that epigenetic modification is happening Post a reply Jump to

    Original URL path: http://www.biology-online.org/biology-forum/about41910.html (2016-02-17)
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  • Biology-Online • View topic - What are the chances of T and B cell matching an antigen?
    a resource of key points to teach myself and others while including links to cite the data Trello The World As We Know It Vaccines How do anti bodies produced from infections of Cowpox also protect against Smallpox What I need to know however is whether a B or T cell receptor can only attach itself to an antigen when it has the correct genes Does this mean that the

    Original URL path: http://www.biology-online.org/biology-forum/about42188.html (2016-02-17)
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  • Biology-Online • View topic - immunoglobulins
    one for each of the classes of immunoglobulins IgM IgG IgD IgA and IgE Each type of heavy chain has a distinct set of cystine cross links Reply with quote RZachary1 RZachary1 Posts 9 Joined Tue Jan 13 2015 12 58 pm Location USA Website Re immunoglobulins Wed Jan 14 2015 5 49 am A protein of animal origin with known antibody activity Immunoglobulins are major components of what is called the humoral immune response system They are synthesized by lymphocytes and plasma cells and found in the serum and in other body fluids and tissues including the urine spinal fluid lymph nodes and spleen Each immunoglobulin molecule consists of four polypeptide chains two heavy chains H chains and two light chains L chains There are five antigenically different kinds of H chains and this difference is the basis for the classification of immunoglobulins The five major classes of immunoglobulins Ig are IgA IgD IgE IgG and IgM See accompanying figure Each class varies in its chemical structure and in its number of antigen binding sites and adheres to and reacts only with the specific antigen for which it was produced Reply with quote venus666 venus666 Posts 8 Joined Wed Jun 24 2015 9 36 am Mon Aug 10 2015 6 29 am Immunoglobulin also known as antibody which produced by plasma cells is a large Y shape protein There are five isotypes in placental mammals which are IgA IgD IgE IgG and IgM The immune system which is highly complex and exceedingly specific uses these glycoprotein molecules to identify and neutralize particular antigens such as bacteria and viruses Immunoglobulin acts as a critical part of the immune response by specifically recognizing and binding to foreign objects such as bacteria or viruses and aiding in their destruction The various immunoglobulin

    Original URL path: http://www.biology-online.org/biology-forum/about41124.html (2016-02-17)
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  • Biology-Online • View topic - An Overview of Embryonic Stem Cells
    cellular structure physiology and communication Post a reply Reply with quote manzarm manzarm Posts 2 Joined Sat Dec 27 2014 1 34 pm Website Wed Aug 05 2015 11 02 am Good information Post a reply Jump to Select a forum General Biology General Discussion Cell Biology Molecular Biology Zoology Discussion Evolution Microbiology Bioinformatics Human Biology Botany Discussion Genetics Physiology Ecology Biology Documents Biology Movies PDF Doc Files Off topic

    Original URL path: http://www.biology-online.org/biology-forum/about41439.html (2016-02-17)
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