Biology:concepts+invest.-text >custom<
3rd Edition
ISBN: 9781259358098
Author: Marielle Hoefnagles
Publisher: Community College Of Philadelphia
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Chapter 7, Problem 3WIO
Summary Introduction
To explain:
Chargaff’s observation that a DNA molecule contains equal amount of A and T and Equal amount of G and C.
Introduction:
DNA is a double helical structure in which the two strands are complementary to each other. The one strands is
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explain how Griffeth's experiment demonstrated that DNA is the hereditary material.
According to Chargaff’s rules for DNA base composition, if a DNA sample contained 10%
guanine, the sample should have:
A. 40% cytosine
B. 90% cytosine
C. 10% adenine
D. 40% thymine
Chargaff’s rule states that the amount of _______ in DNA is always roughly equal to the amount of thymine, and that the amount of guanine in DNA is always roughly equal to the amount of cytosine.
Chapter 7 Solutions
Biology:concepts+invest.-text >custom<
Ch. 7.1 - How did Griffiths research, coupled with the work...Ch. 7.1 - How did the Hershey-Chase blender experiments...Ch. 7.2 - What are the components of DNA and its...Ch. 7.2 - What evidence enabled Watson and Crick to decipher...Ch. 7.2 - Prob. 3MCCh. 7.3 - What is the relationship between a gene and a...Ch. 7.3 - Prob. 2MCCh. 7.3 - What are the three types of RNA, and how does each...Ch. 7.4 - What happens during each stage of transcription?Ch. 7.4 - Where in the cell does transcription occur?
Ch. 7.4 - What is the role of RNA polymerase in...Ch. 7.4 - What are the roles of the promoter and terminator...Ch. 7.4 - How is mRNA modified before it leaves the nucleus...Ch. 7.5 - How did researchers determine that the genetic...Ch. 7.5 - What happens in each stage of translation?Ch. 7.5 - Where in the cell does translation occur?Ch. 7.5 - How are polypeptides modified after translation?Ch. 7.6 - What are some reasons that cells regulate gene...Ch. 7.6 - Prob. 2MCCh. 7.6 - Prob. 3MCCh. 7.6 - Prob. 4MCCh. 7.7 - What is a mutation?Ch. 7.7 - What are the types of mutations, and how does each...Ch. 7.7 - Prob. 3MCCh. 7.7 - Prob. 4MCCh. 7.7 - How are mutations important?Ch. 7.8 - What question about the FOXP2 gene were the...Ch. 7.8 - What insights could scientists gain by...Ch. 7 - A nucleotide is composed of all of the following...Ch. 7 - Prob. 2MCQCh. 7 - Transcription copies a _______ to a complementary...Ch. 7 - Choose the DNA sequence from which this mRNA...Ch. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - Prob. 7MCQCh. 7 - How does the lac operon regulate lactose digestion...Ch. 7 - Prob. 9MCQCh. 7 - Prob. 10MCQCh. 7 - Explain how Griffiths experiment and Avery,...Ch. 7 - Prob. 2WIOCh. 7 - Prob. 3WIOCh. 7 - Prob. 4WIOCh. 7 - Put the following in order from smallest to...Ch. 7 - Prob. 6WIOCh. 7 - Prob. 7WIOCh. 7 - Prob. 8WIOCh. 7 - List the three major types of RNA and their...Ch. 7 - Some people compare DNA to a blueprint stored in...Ch. 7 - Prob. 11WIOCh. 7 - Prob. 12WIOCh. 7 - Refer to the figure to answer these questions: a....Ch. 7 - Prob. 14WIOCh. 7 - Prob. 15WIOCh. 7 - If a protein is 1259 amino acids long, what is the...Ch. 7 - Prob. 17WIOCh. 7 - The roundworm C. elegans has 556 cells when it...Ch. 7 - Prob. 19WIOCh. 7 - Prob. 20WIOCh. 7 - Prob. 21WIOCh. 7 - A protein-encoding region of a gene has the...Ch. 7 - Explain how a mutation in a protein-encoding gene,...Ch. 7 - Prob. 24WIOCh. 7 - Describe the mutation shown in figure 7.27 and...Ch. 7 - Prob. 26WIOCh. 7 - Prob. 27WIOCh. 7 - Prob. 28WIOCh. 7 - Prob. 29WIOCh. 7 - Refer to figure 7.28 and the chapter con tent to...Ch. 7 - Prob. 2PITCh. 7 - Prob. 3PITCh. 7 - Prob. 4PIT
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- Explain to a friend the characteristics a molecule must have to function as genetic material and then explain the important features of the structure of DNA that are consistent with its role as the chemical basis of heredity.arrow_forwardWhich statement describes Linus Pauling's contribution to the understanding of DNA structure? a Having first discovered the spiral shape of proteins, Linus Pauling used x-ray technology to hypothesize that the DNA molecule consisted of two consistently spaced strands that formed a spiral shape. b Having originally studied proteins, Pauling proposed that DNA was a three-chained helix with a sugar-phosphate backbone at the center and bases sticking out from the backbone. c Linus Pauling conducted experiments to prove that DNA carried genetic information. d Linus Pauling studied DNA base pairing.arrow_forwardCompare a picture of a structure of Human DNA and Bacterial DNA, are they similar?arrow_forward
- Chargaff studied the composition of DNA from different sources and found thata. the number of phosphate groups always equals the number of five-carbon sugars.b. the proportions of A equal that of C and G equals T.c. the proportions of A equal that of T and G equals C.d. the proportions of deoxyribose equal that of ribose.arrow_forwardExplain the sequence of the four letters of the DNA alphabet?arrow_forwarddraw the chemical structure of a strand of dna with the sequence ATG.arrow_forward
- Whta is a homolog of a DNA ?arrow_forwardIf the sequence of base pairs on a DNA molecule are AGATTAGTG, what is the sequence on the complementary strand?arrow_forwardIf one side of DNA molecule had a base sequence of adenine-adenine-guanine-cytosine-thymine-cytosine-thymine, what would the sequence of bases on the opposite side of the molecule be?arrow_forward
- the shape of a DNA molecule is a double helix. what makes up the outer regions of the molecule and the 'rungs' of the molecule?arrow_forwardChargaff’s analysis of the base composition of DNA is consistentwith base pairing betweena. A and G, and T and C.b. A and A, G and G, T and T, and C and C.c. A and T, and G and C.d. A and C, and T and G.arrow_forwardDescribe the chemical structure of DNA and its signifi cancearrow_forward
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