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- 3. Explain how water activity and pH can affect the susceptibility of proteins to denaturation by heat.Gel electrophoresis separates nucleic acids on the basis of differences in (a) length (molecular weight) (b) charge (c) nucleotide sequence (d) relative proportions of adenine and guanine (e) relative proportions of thymine and cytosine1. Suppose Biuret test is conducted to a solution of RNA. Will it give a positive result or not? Explain your answer. ____________________________________________________________________ ____________________________________________________________________ 2. Why is Molisch’s test used for the determination of presence of pentose in the hydrolysate? What other test could be used for this? ____________________________________________________________________ ____________________________________________________________________
- 1.What is the chemic name and formula of the precipitate for the test for phosphate? 2.suppose biuret test is conducted to a solution of RNA. Will it give a positive result or not? Explain answer.1. How are proteins influenced by mutations in a DNA sequence? 1A: what happens if DNA has a one base mutation in its squence? Provide an example as well1)The percentage of adenine in a sample of a DNA molecule is 35%. So, the percentage of thymine should be: a)65% b)35% c)53%
- 4. The structures within living cells that contain the genetic material is called A Chromosome B. Nucleosome C. Ribosome D. Nucleolus1. What is the name of the method you used to isolate protein from bacterial samples? 2. Give the protocol you use to successfully achieve our protein isolation. 3. In a polyacrylamide gel electrophoresis, the gel consists of specific gel components, name them.One species' DNA differs from others in its _______ a. nucleotides b. DNA sequence c. sugar-phosphate backbone d. all of the above
- 1. Suppose Biuret test is conducted to a solution of RNA. Will it give a positive result or not? Explain your answer.5)Which type of nucleic acid would have the sequence "ACCGAUUG"? a)DNA b)mRNA c)Another type of nucleic acid d)More information is needed2. Discuss the reasons proteins were generally favored over DNA as the genetic material before 1940. What was the role of the tetranucleotide hypothesis in this controversy?