• Q : Compartments within a eukaryotic cell?....
    Biology :

    How are proteins targeted to various compartments with in a eukaryotic cell? Please give a detailed illustration of how a protein is targeted to the specific organelle.

  • Q : Integral membrane glycoprotein....
    Biology :

    Explain how does an integral membrane glycoprotein travel from ER to the Golgi and from the Golgi to the plasma membrane? Describe the modification which goes on to this protein?

  • Q : Obliogmycin and mechanism of inhibition....
    Biology :

    The addition of oligomycin to mitochondria markedly reduced both the rate of electron transfer from NADH to oxygen and the rate of ATP formation.

  • Q : Treatment of functioning mitochondria....
    Biology :

    Nigericin is an ionosphere which exchanges K+ for H+ across membranes. Describe how the treatment of functioning mitochondria with nigericin uncouples electron transport form oxidative phosphorylati

  • Q : Presentation of chemiosmosis hypothesis....
    Biology :

    Several chemicals block ATP synthesis by permitting protons and other ions to "leak across membranes," disrupting the charge and protein gradients established by the electron flow via an electron tr

  • Q : Electron transport chain....
    Biology :

    Is the production of water by the electron transport chain catalyzed by the cytochrome oxidase, ubiquinone, cytochrome c, cytochrome b or complex I?

  • Q : Action potential and its representation on egg....
    Biology :

    Compare and contrast the divisions of the autonomic nervous system's effect on the heart rate and stroke volume.

  • Q : Compartments in the secretory pathway....
    Biology :

    Please give some information regarding the relationships between the intra-cellular compartments included in the secretory and endocytic pathways, as well please differentiate between co-translation

  • Q : Protozoan which causes amoebic dysentery....
    Biology :

    In several countries, human waste is employed as a fertilizer. If produce is grown in this kind of fertilizer, it is possible that it will be contaminated with the protozoan which causes amoebic dys

  • Q : Proper hydration for multi-cellular organisms....
    Biology :

    What will occur to the volume of the cells as a consequence? Explain why is proper hydration significant for multi-cellular organisms?

  • Q : Diffusion-osmosis-cell membrane potential....
    Biology :

    Start by distinguishing between the osmosis and diffusion; how are they alike? In what manners are they different?

  • Q : Examples of converting units....
    Biology :

    A perfume company wishes to dispense 13.9 quarts of a new fragrance into the small vials. Determine how many 25 ml vials can they fill?

  • Q : Properties of pancreatic serine proteases....
    Biology :

    The major difficulty in investigating the properties of pancreatic serine proteases is that these enzymes, being proteins, are self digesting. The problem is less rigorous for solutions of chymotry

  • Q : Pyranose forms of d-galactose and d-glucose....
    Biology :

    How many different possible disaccharides can be made between the pyranose forms of D-galactose and D-glucose? Explain how many are non-reducing?

  • Q : Feasibility of using methylation analysis....
    Biology :

    Describe the feasibility of using methylation analysis to differentiate between each of the given pairs of carbohydrates: A) Maltose and Trehalose B) Maltose and Amylose C) Amylose and Cellulose

  • Q : Major pathway of the glycine degradation....
    Biology :

    In order to find out the main pathway of glycine degradation, you devise an experiment in which mice are fed 13C (alpha)-labeled glycine, and the livers are then isolated and radioactive intermediat

  • Q : Oxidation of palmitate....
    Biology :

    Estimate the amount of energy a mammal can get from the oxidation of palmitate, in the liver beneath conditions of ketosis, relative to the amount obtainable under conditions of a balanced diet with

  • Q : Structure of mitochondria and its function....
    Biology :

    Explain how does the structure of the mitochondria relate to its function? As a biker pumps up a hill to the finish line his leg muscles start to feel fatigue. Explain the processes at work to make h

  • Q : Exergonic and endergonic reaction....
    Biology :

    Illustrate the difference between and exergonic and endergonic reaction? Explain why do environmentalists claim that a raise in forests, that is, rainforests, will slow down the effects of the global

  • Q : Components of membranes....
    Biology :

    Explain why can't triglycerols (fats) be important components of membranes? When bacteria growing at 20 degree Celsius are warmed to 30 degree Celsius, are they more probable to synthesize the membra

  • Q : Fatty acid complement in the bacterial membrane....
    Biology :

    A bacterium is in the method of acclimating to a lower temperature environment. Explain how would you expect the fatty acid complement in the bacterial membrane to change in response to the lower te

  • Q : Signaling responses-changes in gene expression....
    Biology :

    Explain why do signaling responses that need changes in proteins already present in the cell take place in milliseconds to seconds, while responses which involve changes in gene expression generally

  • Q : Signaling mechanisms by steroid-hormone receptor....
    Biology :

    The signaling mechanisms employed by a steroid-hormone receptor and by an ion channel linked receptor have very few components. Can either mechanism lead to the amplification of the initial signal?

  • Q : Activity of the pyruvate dehydrogenase complex....
    Biology :

    Since oxygen is not a reactant or a product in the citric acid cycle, explain why do low levels of oxygen reduce the activity of the pyruvate dehydrogenase complex?

  • Q : Dietary deficiency of vitamin b1....
    Biology :

    The disease beriberi that results from a dietary deficiency of vitamin B1 (Thiamine) is characterized by the neurological and cardiac symptoms, and also raised the levels of pyruvate and alpha- keto

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