Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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DRAW A DNA STRAND WITH 10 ADENINE BASES FOLLOWED BY 10 CYTOSINE BASES. IF THAT SAME STRAND BONDED TO A STRAND OF 15 THYMINE BASE AND 5 GUANINE BASES, HOW WOULD THE DOUBLE HELIC SHAPE VARY FROM A TYPICAL DNA DOUBLE HELIX?
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- If a DNA double helix contains 28% T nucleotides, then what is the percentage of A nucleotides?arrow_forwardDescribe the complementary, antiparallel, double-stranded structure of DNA.arrow_forwardNucleic acids such as DNA are polymers of nucleotides. Each nucleotide consists of a five-carbon sugar bonded to a nitrogen base and a phosphate molecule. Each carbon on the sugar is numbered with primes according to chemical convention. Which carbon on the deoxyribose sugar is the nitrogen base bonded to AND how many hydrogen bonds are between nitrogenous bases in a double-stranded DNA molecule? Select one: a. Carbon Bonded to the Nitrogenous Base Number of Hydrogen Bonds Nitrogenous Bases 1' 3 A and T b. Carbon Bonded to the Nitrogenous Base Number of Hydrogen Bonds Nitrogenous Bases 2' 2 C and G c. Carbon Bonded to the Nitrogenous Base Number of Hydrogen Bonds Nitrogenous Bases 1' 3 C and G d. Carbon Bonded to the Nitrogenous Base Number of Hydrogen Bonds Nitrogenous Bases 2' 2 A and Tarrow_forward
- Using your own words and including the phrases “5’ to 3’” and “3’ to 5’” explain how a double helix of DNA is antiparallel.arrow_forwardIf one side of a DNA molecule has the base sequence A T C G G G C C A A C C, what would the sequence be on the complementary strand?arrow_forwardWhat type of DNA helix spirals to the left and the backbone takes on a zigzag shape?arrow_forward
- draw the chemical structure of a strand of dna with the sequence ATG.arrow_forwardWhich statement correctly explains the chemical basis of Chargaff's rules? Specific purines and specific pyrimidines will always be found opposite each other in the two opposing DNA strands. The double-stranded DNA helix contains phosphodiester bonds linking the nucleotides together. The DNA strands are oriented in an antiparallel direction. Phosphate groups and deoxyribose form the outside backbone of the double stranded DNA molecule. Nucleotides are always composed of a pentose sugar, phosphate, and nitrogenous base.arrow_forwardDuring the synthesis of a DNA molecule, nucleotides are added sequentially to the growing DNA molecule via bonds between the previously added nucleotide and the next nucleotide. The figure below illustrates a partial strand of a DNA molecule. W, X, Y, and Z denote differ- ent chemical bonds on the DNA strand. 5' end OH 0-P-0 A W B X с o Y 0 3' end The molecular structure of a DNA strand D Z OP 0 0X CH, -0- Which of the four labeled bonds was last to form during DNA synthesis? W CH, OHarrow_forward
- Match the correct bases pairs to find the opposite strand of DNA strand of DNA - T G C A A T G C C C G T A T A T G C C A complementary strand -arrow_forwardWhat chemical group (phosphate group, hydroxyl group, or anitrogenous base) is found at the 3′ end of a DNA strand? Whatgroup is found at the 5′ end?arrow_forwardThe proposed model of the DNA double helix by Watson and Crick was based on earlier findings the DNA structure is a helix and that the number of bases or nucleotide C+A is always equal to G + T. With this in mind, what is the number of hydrogen bonds that hold this DNA helix with the following sequence: AGGTCTTCGTGGCCTA TCCAGAAGCACCGGAT 28 58 41 38arrow_forward
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