Homework Answers
10. Answer: D
- The chromatin is organized with the help of histone proteins to form the nucleosome.
- About 146-147 bp DNA length is tightly wrapped around octameric core histones (Two copies of each H2A, H2B, H3 and H4 histone proteins).
- These nucleosome cores are separated by linker DNA, which are associated with Histone H1.
11. Answer: D
- Nucleotides of one strand is paired with nucleotides of the other strand.
- The double helix structure is formed due to secondary conformation. The double helix is formed by wrapping of the two strands around each other.
- The strands also hold with the force of stacking interaction of bases, stabilized by Vander Waals forces.
- The bases of DNA forms hydrogen bonds creating “base pairs”, help them to form such folded structure for a double stranded molecule (as in DNA).
- Adenine pairs with Thymine with double bonds (A=T)
- Guanine pairs with Cytosine with triple bonds (G=C)
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QUESTION 10 If an enzyme degraded linker DNA, what would be an immediate consequence? O A....
17 Which of the following statements is not TRUE with respect to the structure of DNA?...
17 Which of the following statements is not TRUE with respect to the structure of DNA? uswered of 2.50 uestion Select one: a. All options are true with respect to the structure of DNA b. The backbone of DNA is formed by phosphodiester links that binds the 5' end of one nucleotide to the 3' of the next one. c. The two strands that form DNA are complementary and antiparallel to each other d. The alpha helix is the consequence...
Question 1 1 pts Why is it important for DNA to have complementary base pairing? O...
Question 1 1 pts Why is it important for DNA to have complementary base pairing? O Complementary base pairing allows base pairs to be packed in the most energetically favorable arrangement inside of the double helix structure. O Complementary base pairing will pair a purine with a purine, which are a similar width, thus they are able to hold the sugar-phosphate backbone an equal distance apart along the DNA molecule o Complementary base pairing is only important for maintaining the...
Question 1 DNA and RNA belong to which of of these categories of macromolecule? Pick all...
Question 1
DNA and RNA belong to which of of these categories of
macromolecule? Pick all that APPLY
Options:
A.Carbohydrate
B.Lipid
C.Protein
D.Nucleic acid
E.Water
Question 2
A certain molecule of DNA contains exactly 22% adenine. How
much cytosine would you expect to find in this molecule?
options
A. 11%
B. 22%
C. 28%
D. 56%
E. 88%
Question 3
The two sides of a double helix run in opposite directions
(they are antiparallel). What does this mean?
Options
A....
only one answer per question QUESTION 6 In a DNA molecule, what type of bond helds...
only one answer per question QUESTION 6 In a DNA molecule, what type of bond helds together the two antiparallel strands of nucleotide chains? a peptide bonds. b polar covalent bonds. c ionic bonds. d hydrogen bonds. e complementary base pairing bonds. QUESTION 7 Who proposed the double helix model? a Watson and Crick. b Griffith. c Avery. d Franklin. e Beadle and Tatum. QUESTION 8 Which of the following enzymes removes the primers used for DNA replication? a...
QUESTION 3 The codon S-AUG-3' on an mRNA encodes the amino acid methionine. What is the...
QUESTION 3 The codon S-AUG-3' on an mRNA encodes the amino acid methionine. What is the corresponding anticodon found on the methionine charged tRNA? 3-UAC-5 5-UAC-3 o 3-GUA-5 5'-ATG-3 QUESTION 4 Match each cause of DNA damage with the mechanism by which it can lead to mutations. Topoisomerase is unable to function properly, and when it makes A cuts in the DNA strands these are not always repaired. This leads to a loss of nucleotides and potential frameshift mutations. In...
4. In a lake governed by the food web shown in the image to the right, 500 brown trout are added from fisheries. Which of the following outcomes would most likely be expected? A. Tadpole populat...
4. In a lake governed by the food web shown in the image to the right, 500 brown trout are added from fisheries. Which of the following outcomes would most likely be expected? A. Tadpole population will increase B. Duck population will decrease C. Algae population will increase D. Lilly Pad population will decrease E. Caddis Fly larvae will increase 5. Which of the following pieces of evidence most strongly supports a common ancestor of all life on Earth? A....
24. What would be the anticodon if the template strand of DNA Is ACC A UCC...
24. What would be the anticodon if the template strand of DNA Is ACC A UCC B.) TGG UGG D. ACC E. TCC 25. Prior to protein synthesis, the DNA A. attracts tRNAs with appropriate amino acids. 6.) serves as a template for the production of mRNA. C. adheres to ribosomes for protein synthesis. D. contains anticodons that become codons. E. must first undergo replication. 26. The Human Genome Project has revealed that human DNA has approximately A. 30,000 bases...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
Please need help answering question A the pages of background information are posted thanks Read page...
Please need help answering question A the pages of background
information are posted thanks
Read page 196-197 and figure 6.20. regarding Meselson and
Stahl’s experiment regarding DNA replication. And Answer the
following question
If you are using this radioactive technique in mouse cells,
what would happen in each phase of G1, S, G2, mitosis and meiosis
assuming that you are grown cells in 15N medium for many
generations and cells in G1are then switched to 14N medium?
G1
S
G2...
17 Which of the following statements is not TRUE with respect to the structure of DNA? uswered of 2.50 uestion Select one: a. All options are true with respect to the structure of DNA b. The backbone of DNA is formed by phosphodiester links that binds the 5' end of one nucleotide to the 3' of the next one. c. The two strands that form DNA are complementary and antiparallel to each other d. The alpha helix is the consequence...
Question 1 1 pts Why is it important for DNA to have complementary base pairing? O Complementary base pairing allows base pairs to be packed in the most energetically favorable arrangement inside of the double helix structure. O Complementary base pairing will pair a purine with a purine, which are a similar width, thus they are able to hold the sugar-phosphate backbone an equal distance apart along the DNA molecule o Complementary base pairing is only important for maintaining the...
Question 1
DNA and RNA belong to which of of these categories of
macromolecule? Pick all that APPLY
Options:
A.Carbohydrate
B.Lipid
C.Protein
D.Nucleic acid
E.Water
Question 2
A certain molecule of DNA contains exactly 22% adenine. How
much cytosine would you expect to find in this molecule?
options
A. 11%
B. 22%
C. 28%
D. 56%
E. 88%
Question 3
The two sides of a double helix run in opposite directions
(they are antiparallel). What does this mean?
Options
A....
QUESTION 3 The codon S-AUG-3' on an mRNA encodes the amino acid methionine. What is the corresponding anticodon found on the methionine charged tRNA? 3-UAC-5 5-UAC-3 o 3-GUA-5 5'-ATG-3 QUESTION 4 Match each cause of DNA damage with the mechanism by which it can lead to mutations. Topoisomerase is unable to function properly, and when it makes A cuts in the DNA strands these are not always repaired. This leads to a loss of nucleotides and potential frameshift mutations. In...
4. In a lake governed by the food web shown in the image to the right, 500 brown trout are added from fisheries. Which of the following outcomes would most likely be expected? A. Tadpole population will increase B. Duck population will decrease C. Algae population will increase D. Lilly Pad population will decrease E. Caddis Fly larvae will increase 5. Which of the following pieces of evidence most strongly supports a common ancestor of all life on Earth? A....
24. What would be the anticodon if the template strand of DNA Is ACC A UCC B.) TGG UGG D. ACC E. TCC 25. Prior to protein synthesis, the DNA A. attracts tRNAs with appropriate amino acids. 6.) serves as a template for the production of mRNA. C. adheres to ribosomes for protein synthesis. D. contains anticodons that become codons. E. must first undergo replication. 26. The Human Genome Project has revealed that human DNA has approximately A. 30,000 bases...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
Please need help answering question A the pages of background
information are posted thanks
Read page 196-197 and figure 6.20. regarding Meselson and
Stahl’s experiment regarding DNA replication. And Answer the
following question
If you are using this radioactive technique in mouse cells,
what would happen in each phase of G1, S, G2, mitosis and meiosis
assuming that you are grown cells in 15N medium for many
generations and cells in G1are then switched to 14N medium?
G1
S
G2...
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