Cards (57)

  • What does DNA stand for?
    Deoxyribonucleic acid
  • DNA is composed of nucleotides
  • Genes are segments of DNA that code for proteins.

    True
  • DNA contains the instructions for the development and functioning of living organisms.
  • Which nitrogenous base pairs with cytosine (C)?
    Guanine (G)
  • DNA's double helix structure resembles a twisted ladder.

    True
  • Each nucleotide in DNA consists of a deoxyribose sugar, a phosphate group, and a nitrogenous base
  • What are the four possible nitrogenous bases in DNA?
    Adenine, Thymine, Cytosine, Guanine
  • Cytosine (C) pairs with guanine (G) in DNA.

    True
  • Adenine pairs with thymine
  • Which nitrogenous base pairs with cytosine?
    Guanine
  • Deoxyribose sugar is a 5-carbon sugar molecule.

    True
  • Adenine pairs with thymine
  • Which nitrogenous base pairs with cytosine?
    Guanine
  • Helicase is the enzyme responsible for unwinding DNA during initiation.

    True
  • Which enzyme seals any remaining gaps in DNA during termination?
    DNA ligase
  • What is the structure of DNA called?
    Double helix
  • Which type of nitrogenous base is adenine?
    Purine
  • Guanine is a purine.

    True
  • What enzyme facilitates the unwinding and separation of the DNA double helix during initiation?
    Helicase
  • Order the phases of DNA replication:
    1️⃣ Initiation
    2️⃣ Elongation
    3️⃣ Termination
  • Match the enzyme with its function:
    Helicase ↔️ Unwinds DNA
    DNA polymerase ↔️ Synthesizes new strands
    DNA ligase ↔️ Seals DNA gaps
  • Genes are located on chromosomes and are made of DNA.
  • What role do genes play in heredity?
    Transmit genetic traits
  • Match the type of cell with the location of its chromosomes:
    Eukaryotic ↔️ Nucleus
    Prokaryotic ↔️ Cytoplasm
  • What proteins are associated with eukaryotic chromosomes?
    Histones
  • Prokaryotic chromosomes are less organized compared to eukaryotic chromosomes.

    True
  • Prokaryotic cells have a single circular chromosome located in the cytoplasm.
  • DNA is a single-stranded molecule.
    False
  • Steps in the DNA replication process:
    1️⃣ DNA unwinds
    2️⃣ DNA polymerase adds complementary nucleotides
    3️⃣ Two identical DNA strands are formed
  • What are chromosomes?
    Organized structures of DNA
  • The sugar-phosphate backbone forms the rungs of the DNA double helix.
    False
  • DNA carries the genetic code used to synthesize proteins
  • What type of bonds hold base pairs together in DNA?
    Hydrogen bonds
  • A phosphate group is a component of a DNA nucleotide.
    True
  • Adenine (A) is a purine and pairs with thymine
  • What type of molecule is adenine?
    Purine
  • Thymine is a pyrimidine.

    True
  • Each nucleotide in DNA consists of a deoxyribose sugar, a phosphate group, and a nitrogenous base
  • What are the four possible nitrogenous bases in DNA?
    A, T, C, G