Mmsc 491 exam - Study guides, Class notes & Summaries

1. Epigenetic: Changes in phenotypeHeritable Not due to changes in DNA sequence DNA methylation or histone modification 2. Collective term for all different DNA molecules within a cell or organism: - Genome 3. DNA protein complex: Chromosome 4. How many DNA molecules does a male have? female have?: Male 25Female 24 5. Single ring based on carbon and nitrogen atoms C,T: Pyrimidine 6. Double ring structure A, G: Purine 7. How many bonds holds together G-C: 3 hydrogen bonds 8. How many ...

With reference to aberrant methylation of bases which of the following statements, if any, is false? A. S-adenosylmethionine donates methyl groups to a range of different molecules in cells and frequently inappropriately methylates bases in DNA. B. Guanine is occasionally methylated to give O-6-methylguanine which base pairs with adenine rather than with cytidine. C. In each nucleated cell, about 300-600 adenines are converted to 3-methyladenine per day. D. 3-methyladenine can be a cytotoxic...

Nucleic Acids are correct answers DNA and RNA Types of Mutations correct answers 1. Deletion 2. Duplication 3. Insertions 4. Tranlocation Translocation correct answers DNA is excahnged in reciprocal way from one chromosome to another Epigenetic Mechanisms correct answers -Changes in the phenotype -Heritable Mutation -Not from changes in the DNA sequences Causes of Epgentic mutation correct answers DNA Methylation or Histone modification Genome correct answers Collective term ...

1. The term phenotype can be applied to a wide range of maifestations.Whichof the following protperties, if any do not constitute a phenotypic manifesta-tion: The sequance of a persons beta globin gene 2. Which, if any, of the following is incorrect? when used in human genetic: - Incorrect:The term dominant and recessive apply equally to allels and phenotypes Correct: - Dominant describes a phenotype that is manifestated in the heterozygotem thatis, the phenotype is attributed to just a s...

The term phenotype can be applied to a wide range of maifestations. Which of the following protperties, if any do not constitute a phenotypic manifestation - correct answer The sequance of a persons beta globin gene Which, if any, of the following is incorrect? when used in human genetic - correct answer Incorrect: The term dominant and recessive apply equally to allels and phenotypes Correct: - Do...

The term phenotype can be applied to a wide range of manifestations. Which of the following properties, if any do not constitute a phenotypic manifestation - The sequence of a persons beta globin gene Which, if any, of the following is incorrect? when used in human genetic - Incorrect: The term dominant and recessive apply equally to allels and phenotypes Correct: - Dominant describes a phenotype that is manifested in the heterozygote that is, the phenotype is attributed to just a single ...

guanine and uracil correct answers In a DNA double helix each type of base forms a stable base pair with only one type of base. When bases on an RNA strand are involved in base pairing, which bases can form stable base pairs with more than one type of base? a. adenine and uracil b. cytosine and uracil c. guanine and uracil d. uracil Purines carry an amino group, unlike pyrimidines correct answers Regarding the structure of bases in nucleic acids, which, if any, of the following statemen...

Overall organizational structure of the human chromosome correct answers normally contain a single, immensely long DNA double helix; to avoid tangling and to manage the long chain efficiently they are complexed with various proteins and sometimes noncoding RNAs to form chromatin that undergoes different levels of coiling and compaction Chromatin correct answers the structure of DNA complexes with proteins that are coiled and compacted - the double helix is wound around positively charged his...

What is the purpose of phosphorylating glucose in cytosol? correct answers A and B What reaction is catalyzed by aldolase? correct answers reversible cleavage of F-1,6-BP to DHAP and GAP What are the primary metabolic fates of pyruvate? correct answers All of the above (ethanol, acetyl CoA, and lactate) High levels of ATP and citrate correct answers All of the above (inhibit glycolysis, indicate remote gluconeogenesis, and indicate a high-energy well-fed state) The major site for glu...

What is the purpose of phosphorylating glucose in cytosol? correct answers A and B What reaction is catalyzed by aldolase? correct answers reversible cleavage of F-1,6-BP to DHAP and GAP What are the primary metabolic fates of pyruvate? correct answers All of the above (ethanol, acetyl CoA, and lactate) High levels of ATP and citrate correct answers All of the above (inhibit glycolysis, indicate remote gluconeogenesis, and indicate a high-energy well-fed state) The major site for glu...