Which of the following represent the way in which the DNA is most commonly injured by...
Homework Answers
1.Damage by direct ionization of the molecular bonds of
the DNA
Ionizing radiation is a type of high-energy radiaton that is able
to release electrons from atoms and molecules generating ions which
can break covalent bonds.Ionizing radiation affects DNA structure
by including DNA breaks,particularly,DSBs.
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Which of the following represent the way in which the DNA is
most commonly injured by...
Which of the following represent the way in which the DNA is most commonly injured by...
Which of the following represent the way in which the DNA is most commonly injured by ionizing radiation? 1. Damage by direct ionization of the molecular bonds of the DNA. 2. Damage by free radicals generated by the ionization of water 3. Damage by free radicals generated by the ionization of oxygen molecules 4. Damage by free radicals generated by the ionization of nitrogenous bases
Describe the specific damage that is done to DNA by each of the following, addressing in...
Describe the specific damage that is done to DNA by each of the following, addressing in particular which bases may be affected and what compounds are produced as a result: (a) bleomycin (b) nitrosamines (c) X-rays (d) water (e) methyl-nitrosoguanidine (f) gamma radiation (g) reactive oxygen species What repair mechanism can the cell use to deal with each of these types of damage?
7. Within the cell the most important critical target molecule for producing radiation damage that is...
7. Within the cell the most important critical target molecule for producing radiation damage that is lethal or mutagenic to cells is 8 & 9.For any type of imaging using ionizing forms of radiation, in general as the speed of image reception and diagnostic quality of the image necessitating a balance be maintained between exposure and diagnostic quality increases the amount of radiation exposure requirements. Act of 1990 requires the reporting of accidents due to malfunction from 10. The FDA...
36. Which statement is true about Nucleic Acids? a) DNA is a protein b) DNA is...
36. Which statement is true about Nucleic Acids? a) DNA is a protein b) DNA is identical to RNA C) RNA has the structure of a double helix, d) RNA binds to DNA but not to amino acids. e) None of these are true. 37. Which is true for DNA, RNA and Polypeptides? a) They all have R groups, b) They are formed from ribose by dehydration synthesis. c) They all have subunits that include nitrogenous bases. d) They were...
10. Which of the following statements best summarizes the differences between DNA and RNA? Group of...
10. Which of the following statements best summarizes the differences between DNA and RNA? Group of answer choices DNA nucleotides contain a different pyrimidine base than RNA nucleotides. The bases in DNA contain sulfur, whereas the bases in RNA do not contain sulfur. The bases in DNA contain sugars, whereas the bases in RNA do not contain sugar. DNA encodes hereditary information, whereas RNA does not. DNA nucleotides contain a different purine base than RNA nucleotides. 9. A phospholipid is...
The following molecules represent the four biomolecules. Examine the structures and answer the questions: Carbohydrates (Amylose),...
The following molecules represent the four biomolecules. Examine the structures and answer the questions: Carbohydrates (Amylose), Nucleic Acids (DNA), Proteins (Peptide), and Lipids. 1. Which biomolecule(s) is/are likely to form ionic interactions with water? Explain your choice(s). 2. A. Which biomolecule(s) is/are likely to form hydrogen bonds with water? Explain your choice(s) B. Identify the H donors and acceptors in those that can form hydrogen bonds. 3. Which biomolecule(s) is/are likely to experience hydrophobic effects? Explain your choice(s). 4. Which...
Which of the following is the most difficult but most accurate of the commonly used methods...
Which of the following is the most difficult but most accurate of the commonly used methods for allocating support department costs to production departments? O a. direct method b. activity-based management method Oc. sequential method d. reciprocal services method
multiple answers are possible! Which of the following statement about DNA is FALSE? When bacteriophage DNA...
multiple answers are possible!
Which of the following statement about DNA is FALSE? When bacteriophage DNA was shown to be the agent necessary for production of new phages, this was the early experiment demonstrating that DNA is the hereditary material. During DNA replication, two replication forks are formed to complete the synthesis of the entire chromosome in eukaryotes. During bacterial DNA replication process, replication forks move in opposite directions away from the origin of replication The molecular structure of DNA...
14. When are atoms most stable? A) when they have the fewest possible yale (B) when...
14. When are atoms most stable? A) when they have the fewest possible yale (B) when they have the ma C) when all of the electron Orbit D) when all electrons are paired e the fewest possible valence electrons they have the maximum number of unpaired electrons in all of the electron orbitals in the valence shell are filled ods with 15. Water molecules can form hydrogen bonds with Acompounds that have polar covalent bonds B) compounds that have non-polar...
1. In eukaryotes, which DNA polymerase is primarily responsible for filling in the gaps in the...
1. In eukaryotes, which DNA polymerase is primarily responsible for filling in the gaps in the DNA generated during base excision repair? DNA polymerase α DNA polymerase β DNA polymerase γ DNA polymerase ö DNA polymerase μ 2. High energy electromagnetic radiation includes which of the following? ultraviolet light x-rays gamma rays two of the above all three of the above 3. Which of the following types of damage to DNA cannot be caused by x-rays and gamma rays? deletions...
Which of the following represent the way in which the DNA is most commonly injured by ionizing radiation? 1. Damage by direct ionization of the molecular bonds of the DNA. 2. Damage by free radicals generated by the ionization of water 3. Damage by free radicals generated by the ionization of oxygen molecules 4. Damage by free radicals generated by the ionization of nitrogenous bases
7. Within the cell the most important critical target molecule for producing radiation damage that is lethal or mutagenic to cells is 8 & 9.For any type of imaging using ionizing forms of radiation, in general as the speed of image reception and diagnostic quality of the image necessitating a balance be maintained between exposure and diagnostic quality increases the amount of radiation exposure requirements. Act of 1990 requires the reporting of accidents due to malfunction from 10. The FDA...
36. Which statement is true about Nucleic Acids? a) DNA is a protein b) DNA is identical to RNA C) RNA has the structure of a double helix, d) RNA binds to DNA but not to amino acids. e) None of these are true. 37. Which is true for DNA, RNA and Polypeptides? a) They all have R groups, b) They are formed from ribose by dehydration synthesis. c) They all have subunits that include nitrogenous bases. d) They were...
Which of the following is the most difficult but most accurate of the commonly used methods for allocating support department costs to production departments? O a. direct method b. activity-based management method Oc. sequential method d. reciprocal services method
multiple answers are possible!
Which of the following statement about DNA is FALSE? When bacteriophage DNA was shown to be the agent necessary for production of new phages, this was the early experiment demonstrating that DNA is the hereditary material. During DNA replication, two replication forks are formed to complete the synthesis of the entire chromosome in eukaryotes. During bacterial DNA replication process, replication forks move in opposite directions away from the origin of replication The molecular structure of DNA...
14. When are atoms most stable? A) when they have the fewest possible yale (B) when they have the ma C) when all of the electron Orbit D) when all electrons are paired e the fewest possible valence electrons they have the maximum number of unpaired electrons in all of the electron orbitals in the valence shell are filled ods with 15. Water molecules can form hydrogen bonds with Acompounds that have polar covalent bonds B) compounds that have non-polar...
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