Biology

9th

grade

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B6A

130
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15 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
    Image

    A model of a DNA molecule is shown below. The arrow indicates -

    the bond between adjacent phosphate and deoxyribose molecules

    the junction of introns and exons in the sense strand of DNA

    the hydrogen bond between complementary nucleotides

    the junction of a codon and a DNA triplet

  • 2. Multiple Choice
    30 seconds
    1 pt

    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?

    phosphate groups

    nitrogenous bases

    deoxyribose sugars

    hydrogen bonds

  • 3. Multiple Choice
    30 seconds
    1 pt

    How does DNA in cells determine an organism's complex traits?

    DNA contains codes for proteins, which are necessary for the growth and functioning of an organism

    DNA separates into long single strands that make up each part of an organism

    DNA produces the energy an organism needs in order to grow

    DNA folds into the nucleus of each of the cells of an organism

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