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1) What structures in cells indicate an evolutionary relationship between bacteria, plants and animals?
2) What explanation can there be to prokayots and plants have cell walls? What would happen to cells if they did not have a cell wall? How can you test your hypothesis?
Explain the interaction of calcium with other proteins and how this alternate control system affects the rate and duration of smooth muscle contraction.
The K+ channel is an example of a transmembrane protein. What types of amino acids are likely to be found lining the channel through which K+ passes,
Why does fluoracetate cause citrate to build up in the Citric Acid Cycle.
As a laboratory assistant you were asked to determine the total number of bacteria in the urine of a person with a urinary tract disorder.
Hermann Kolbe's synthesis of an organic compound, acetic acid, from inorganic substances that had been prepared straight from pure elements was an important milestone for what reason.What piece of evidence contradicts this claim.
Briefly explain why microtubules have two families of associated motor proteins (kinesins and dyneins), while microfilaments have only one family of associated motor proteins (myosins).
Smoking has been linked to many respiratory diseases and many states have made smoking illegal in public places.
This question is from a post lab from a Spreptex Rapid Test. What is the purpose of mixing the latex antibody suspensions with extraction reagents alone? What is the desired result? What results would invalidate the test?
A double-stranded fragment of viral DNA, one of whose strands is shown below, encodes two polypeptides called vir-1 and vir-2. Adding this double stranded DNA fragment to an in vitro transcription and translation system yields
Oops! You were cleaning out the aquariums in the biology lab and you accidentally placed the saltwater fish in the freshwater tank. What will happen to the cells of these fish?why proper hydration important for multicellular organisms.
Genes for color blindness and hemophilia are linked on theX-chromosome in humans with a recombination frequency of 30 %. Awoman whose father was a color blind hemophiliac and mother wasnormal with no history of color blindness and hemophilia wants..
Discuss how does column chromatography separate molecules such as DNA and RNA? Explain whyis it difficult to separate large amounts of RNA and DNA using gel electrophoresis?
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