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TEKS Biology High School - B.6.A: DNA Components

Quiz by TEKS Biology High School

High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

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High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

B.6.A: DNA Components

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13 questions
Show answers
  • Q1
    Differences in traits such as hair texture are determined by differences in —
    the sequence of nucleotides in DNA
    the location of sugar groups in DNA
    the number of nitrogenous bases in DNA
    the molecules attached to the phosphate in DNA
    30s
    B.6.A: DNA Components
  • Q2
    A student used poster board to construct this model of a section of DNA. Which statement describes this model of DNA?
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    The model is inaccurate because the base pairs are incorrect
    The model is accurate because it contains correctly paired bases
    The model is accurate because it shows each base splitting to form a double helix
    The model is inaccurate because some typical bases in DNA are missing
    30s
    B.6.A: DNA Components
  • Q3
    Nitrogenous bases are located on both strands of the DNA double helix. What is the significance of the nitrogenous bases?
    The type of hydrogen bonding between the nitrogenous bases determines which amino acid will be added to the peptide chain
    The number of adenines and cytosines determines the type of RNA that will be produced
    The order of nitrogenous bases determines the order of amino acids in the proteins synthesized
    The amount of thymine and guanine in the DNA molecules determines the length of the genes
    30s
    B.6.A: DNA Components
  • Q4
    Each strand of a DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A diagram of a section of DNA is shown. Which DNA strand is complementary to the one shown above?
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    30s
    B.6.A: DNA Components
  • Q5
    A segment of DNA is represented in the illustration. How is information for a specific protein carried on the DNA molecule?
    Question Image
    In the ratio of adenines to thymines
    In the double-helix shape of the condensed chromosome
    As a pattern of phosphates and sugars
    As a sequence of nucleotides
    30s
    B.6.A: DNA Components
  • Q6
    A student builds a model of a DNA strand. Which of these models of a DNA strand shows bases that are complementary to the ones on the student’s DNA model?
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    45s
    B.6.A: DNA Components
  • Q7
    The sequence of nitrogenous bases in DNA varies widely. The sequence of the bases in DNA is most important for which of the following?
    Providing the instructions for the traits of an organism
    Preventing mutations from occurring during DNA replication
    Helping form the sugar-phosphate backbone of DNA molecules
    Allowing the DNA to have the shape necessary for replication
    30s
    B.6.A: DNA Components
  • Q8
    In 1952 Rosalind Franklin took the x-ray photograph shown below, which gave the world its first look at DNA. By studying this photograph, scientists gained knowledge about the —
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    role of DNA in protein synthesis
    mutation of nucleotide sequences in DNA
    double-helix structure of DNA
    sequence of DNA that makes up the human genome
    30s
    B.6.A: DNA Components
  • Q9
    A model of a DNA molecule is shown below. The arrow indicates —
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    the hydrogen bond between complementary nucleotides
    the junction of introns and exons in the sense strand of DNA
    the bond between adjacent phosphate and deoxyribose molecules
    the junction of a codon and a DNA triplet
    30s
    B.6.A: DNA Components
  • Q10
    Characteristics such as a widow’s peak or attached earlobes are determined by the genetic code. Which components of DNA are referred to as the genetic code?
    Deoxyribose sugars
    Nitrogenous bases
    Phosphate groups
    Hydrogen bonds
    30s
    B.6.A: DNA Components
  • Q11
    How does DNA in cells determine an organism’s complex traits?
    DNA separates into long single strands that make up each part of an organism
    DNA folds into the nucleus of each of the cells of an organism
    DNA contains codes for proteins, which are necessary for the growth and functioning of an organism
    DNA produces the energy an organism needs in order to grow
    30s
    B.6.A: DNA Components
  • Q12
    Students are given data from an investigation that identified some of the chemical elements present in four different samples.
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    Sample 2
    Sample 4
    Sample 3
    Sample 1
    60s
    B.6.A: DNA Components
  • Q13
    Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?
    The number of carbons in the DNA molecule.
    The sequence of nucleotide bases in the DNA molecule.
    The sequences of phosphates along each DNA strand.
    The number of hydrogen bonds that hold the strands of DNA together.
    60s
    B.6.A: DNA Components

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