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What is the difference between a chromatid and a chromosome? a. Chromatids consist of DNA, whereas chromosomes consist of proteins. b. A chromatid is one half of a replicated chromosome, whereas a chromosome consists of DNA wrapped around proteins in a highly organized manner. c . Chromosomes are always replicated, whereas chromatids are not. d. A chromatid always consists of two linear DNA molecules, whereas a chromosome always consists of just one linear DNA molecule.
Using a spectrophotometer set at 400 nm, an absorbance reading of 0.050 was obtained for a solution of p-nitrophenol at pH 6.5. The molar extinction coefficient of p-nitrophenol 21500 M-1cm-1 and the pka for p-nitrophenol is 7.
A Western Blot (immunoblot) can be used as both a direct and as an indirect test. Explain how, comparing it first to a direct ELISA, and then to an indirect ELISA. Where do the antibodies and antigens come from in each case? What information does ..
Explore the role of the epigenome and/or other gene expression regulatory mechanisms in the development of cancer. Discuss in detail one possible epigenetic/post-transcriptional/post-translational target for cancer treatment, and identify the succes..
What is the function of the retina? What is the function of the choroid layer?
How many times would you expect a restriction enzyme that recognizes a 6 base palindrome to cut a 16500 base piece of of DNA?
how to Increasing the percent of acrylamide
Determine when glucagon binds its receptor there is an increase in the second messenger, cAMP. cAMP levels can be reduce by which of the following enzymes?
What defence was successful in preventing you from grab the snake. While travelling in Texas, you stumble across a snake with red, yellow, and black bands.
Discuss in some detail the pros and cons of any one proposed means (other than irradiation) to decrease the prevalence of bacteria causing food poisoning in our commercial food supplies.
Most biologists believe that immune system's defense against infections largely rests on its ability to distinguish self molecules from nonself molecules.
If two parents are heterozygous carriers of Cystic Fibrosis, demonstrate a pedigree with four children showing the incidence of carriers and afflicted children.
An individual heterozygous for eye color, skin color, and number of eyes mates with an individual who is homozygous recessive for all three characters; what would be the expected phenotypic ratio of their offspring? [Hint: B = black eyes, b = oran..
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