Biology - Chapter 16

Last update by mayur on 04/07/2014
1102141 People have viewed this Quiz
  • Share

It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following?

A) sequence of bases

B) phosphate-sugar backbones

C) complementary pairing of bases

D) side groups of nitrogenous bases

E) different five-carbon sugars

Answer:

A) sequence of bases

View Biology - Chapter 16 as Flashcard Deck

Related Quiz Content
  • feldman2009

    In an analysis of the nucleotide composition of DNA, which of the following will be found?

    A) A = C

    B) A = G and C = T

    C) A + C = G + T

    D) G + C = T + A

    C) A + C = G + T

  • feldman2009

    Mendel and Morgan did not know about the structure of DNA; however, which of the following of their contributions was (were) necessary to Watson and Crick?

    A) the particulate nature of the hereditary material

    B) dominance vs. recessiveness

    C) sex-linkage

    D) genetic distance and mapping

    E) the usefulness of peas and Drosophila

    A) the particulate nature of the hereditary material

  • feldman2009

    Replication in prokaryotes differs from replication in eukaryotes for which of these reasons?

    A) The prokaryotic chromosome has histones, whereas eukaryotic chromosomes do not.

    B) Prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many.

    C) The rate of elongation during DNA replication is slower in prokaryotes than in eukaryotes.

    D) Prokaryotes produce Okazaki fragments during DNA replication, but eukaryotes do not.

    E) Prokaryotes have telomeres, and eukaryotes do not.

    B) Prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many.

  • feldman2009

    Once the pattern found after one round of replication was observed, Meselson and Stahl could be confident of which of the following conclusions?

    A) Replication is semi-conservative.

    B) Replication is not dispersive.

    C) Replication is not semi-conservative.

    D) Replication is not conservative.

    E) Replication is neither dispersive nor conservative.

    D) Replication is not conservative.

  • feldman2009

    An Okazaki fragment has which of the following arrangements?

    A) primase, polymerase, ligase

    B) 3' RNA nucleotides, DNA nucleotides 5'

    C) 5' RNA nucleotides, DNA nucleotides 3'

    D) DNA polymerase I, DNA polymerase III

    E) 5' DNA to 3'

    C) 5' RNA nucleotides, DNA nucleotides 3'

  • feldman2009

    Which enzyme catalyzes the elongation of a DNA strand in the 5' → 3' direction?

    A) primase

    B) DNA ligase

    C) DNA polymerase III

    D) topoisomerase

    E) helicase

    C) DNA polymerase III

  • feldman2009

    Eukaryotic telomeres replicate differently than the rest of the chromosome. This is a consequence of which of the following?

    A) The evolution of telomerase enzyme

    B) DNA polymerase that cannot replicate the leading strand template to its 5' end

    C) Gaps left at the 5' end of the lagging strand because of the need for a 3' onto which nucleotides can attach

    D) Gaps left at the 3' end of the lagging strand because of the need for a primer

    E) The "no ends" of a circular chromosome

    C) Gaps left at the 5' end of the lagging strand because of the need for a 3' onto which nucleotides can attach

  • feldman2009

    The enzyme telomerase solves the problem of replication at the ends of linear chromosomes by which method?

    A) adding a single 5' cap structure that resists degradation by nucleases

    B) causing specific double strand DNA breaks that result in blunt ends on both strands

    C) causing linear ends of the newly replicated DNA to circularize

    D) adding numerous short DNA sequences such as TTAGGG, which form a hairpin turn

    E) adding numerous GC pairs which resist hydrolysis and maintain chromosome integrity

    D) adding numerous short DNA sequences such as TTAGGG, which form a hairpin turn

  • feldman2009

    The DNA of telomeres has been found to be highly conserved throughout the evolution of eukaryotes. What does this most probably reflect?

    A) the inactivity of this DNA

    B) the low frequency of mutations occurring in this DNA

    C) that new evolution of telomeres continues

    D) that mutations in telomeres are relatively advantageous

    E) that the critical function of telomeres must be maintained

    E) that the critical function of telomeres must be maintained
  • feldman2009

    Polytene chromosomes of Drosophila salivary glands each consist of multiple identical DNA strands that are aligned in parallel arrays. How could these arise?

    A) replication followed by mitosis

    B) replication without separation

    C) meiosis followed by mitosis

    D) fertilization by multiple sperm

    E) special association with histone proteins

    B) replication without separation

  • feldman2009

    To repair a thymine dimmer by nucleotide excision repair, in which order do the necessary enzymes act?

    A) exonuclease, DNA polymerase III, RNA primase

    B) helicase, DNA polymerase I, DNA ligase

    C) DNA ligase, nuclease, helicase

    D) DNA polymerase I, DNA polymerase III, DNA ligase

    E) endonuclease, DNA polymerase I, DNA ligase
    E) endonuclease, DNA polymerase I, DNA ligase