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Biology Category 2 Quiz

Quiz by Nnenna

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42 questions
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  • Q1
    The technique known as chromosome painting is the result of scientific research. Scientists use chromosome painting to mark the locations of genes on human chromosomes with fluorescent tags. It is also possible to apply this technique to the chromosomes of many different species. Chromosome painting allows for which of the following?
    A comparison of the genomes of different species
    The sequencing of proteins from many species
    An increase in mutations in many species
    The extraction of amino acids from different species
  • Q2
    A section of a nucleic acid is shown in this diagram. The process represented in the diagram produces a molecule that is complementary to the template strand of DNA. What type of molecule is produced?
    Question Image
    Messenger RNA
    New DNA
  • Q3
    If several pea plants with the genotype TTYy are crossed with pea plants with the genotype Ttyy, what percentage of the offspring will be expected to have the TTYy allele combination?
  • Q4
    A model of a DNA molecule is shown here. The arrow indicates-
    Question Image
    the bond between adjacent phosphate and deoxyribose molecules
    the hydrogen bond between complementary nucleotides
    the junction of a codon and a DNA triplet
    the junction of introns and exons in the sense strand of DNA
  • Q5
    A codon chart is shown here Which of these changes to the DNA triple 3’GCT 5’ will affect the protein produced?
    Question Image
  • Q6
    Crossing-over between nonsister chromatids during meiosis is significant in heredity. This process most likely leads to an increase in which of the following?
    The expression of dominant traits
    The occurrence of polyploidy
    Genetic variation
    Number of gametes
  • Q7
    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?
    Nitrogenous bases
    Deoxyribose sugars
    Hydrogen bonds
    Phosphate groups
  • Q8
    In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a brown cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?
    1 BB: 2 Bb: 1 bb
    2 BB: 0 Bb: 2 bb
    0 BB: 2 Bb: 2bb
    2 BB: 1 Bb: 0 bb
  • Q9
    How does DNA in cells determine an organism’s complex traits?
    DNA folds into the nucleus of each of the cells of an organism.
    DNA produces the energy an organism needs in order to grow.
    DNA separates into long single strands that make up each part of an organism.
    DNA contains codes for proteins, which are necessary for the growth and functioning of an organism.
  • Q10
    The fact that a strain of yeast with a certain defective gene can use the human version of the gene to repair itself is evidence that yeast and humans-
    Share a genetic code
    Both have eukaryotic cells
    Depend on the same food supply
    Have identical genomes
  • Q11
    A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?
    The offspring of the organism
    The siblings of the organism
    The other organisms living nearby
    The mating partner of the organism
  • Q12
    Early-onset Alzheimer’s disease affects people under the age of 65. Less than five percent of people who are diagnosed with Alzheimer’s disease have this type. Many cases of early-onset Alzheimer’s disease are inherited, a type known as familial Alzheimer’s disease (FAD). Which statement is best supported by this information?
    Deletion of one amino acid causes FAD.
    Natural selection will continue to reduce the incidence of FAD.
    FAD is the result of a genetic change in one or more chromosomes.
    FAD affects only the genes of middle-aged people.
  • Q13
    Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?
    Binary fission
  • Q14
    The sequence of nitrogenous bases in DNA varies widely. The sequence of the bases in DNA is most important for which of the following?
    Preventing mutations from occurring during DNA replication
    Allowing the DNA to have the shape necessary for replication
    Providing the instructions for the traits of an organism
    Helping form the sugar-phosphate backbone of DNA molecules
  • Q15
    Four different types of cells are shown below. Which characteristic is shared by all four cells?
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    A mechanism for transforming sunlight into energy
    Genetic material composed of DNA
    Membrane-bound organelles that transport substances

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