18.2.3 DNA

Cards (26)

  • What type of bonds hold the two strands of DNA together in a double helix?
    Hydrogen bonds
  • Each nucleotide in DNA consists of a deoxyribose sugar, a phosphate group, and a nitrogenous base.

    True
  • Match the nitrogenous base with its type and pairing base:
    Adenine (A) ↔️ Purine, Thymine (T)
    Thymine (T) ↔️ Pyrimidine, Adenine (A)
    Guanine (G) ↔️ Purine, Cytosine (C)
    Cytosine (C) ↔️ Pyrimidine, Guanine (G)
  • In DNA, Adenine pairs with Thymine
  • Why is the specific base pairing in DNA crucial for its stability and replication?
    Ensures structural stability
  • What is the key structural feature of DNA that ensures its stability and accurate replication?
    Double helix
  • What type of structure is DNA known for?
    Double helix
  • Which nitrogenous base pairs with Adenine?
    Thymine
  • Steps of base pairing in DNA:
    1️⃣ Purines (A and G) are classified
    2️⃣ Pyrimidines (T and C) are classified
    3️⃣ Adenine pairs with Thymine via two hydrogen bonds
    4️⃣ Guanine pairs with Cytosine via three hydrogen bonds
  • Adenine and Thymine are connected by two hydrogen bonds.
    True
  • What forms the backbone of each DNA strand?
    Sugar-phosphate
  • What is one primary function of DNA related to genetic information?
    Storage
  • The two DNA strands in a double helix are twisted around each other
  • What forms the backbone of each DNA strand?
    Sugar-phosphate backbone
  • Arrange the components of a DNA double helix from largest to smallest:
    1️⃣ Sugar-phosphate backbone
    2️⃣ Hydrogen bonds
    3️⃣ Nitrogenous bases
    4️⃣ Nucleotides
  • Hydrogen bonds hold complementary base pairs together in DNA.

    True
  • Adenine (A) pairs with Guanine (G) in DNA.
    False
  • Each nucleotide in DNA contains a deoxyribose sugar, a phosphate group, and a nitrogenous base.
  • A nucleotide consists of a deoxyribose sugar, a phosphate group, and a nitrogenous base
  • Adenine pairs with Thymine, and Guanine pairs with Cytosine in DNA.

    True
  • Guanine pairs with Cytosine via three hydrogen bonds
  • What are the two purines in DNA?
    Adenine and Guanine
  • The double helix of DNA is held together by hydrogen bonds between complementary bases
  • The base pairs in DNA are A-T and G-C.

    True
  • DNA replicates itself accurately during cell division
  • DNA provides instructions for protein synthesis.

    True