DNA Structure Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what’s on both sides.
  • Make sure you understand the information on each card. If something’s unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

What is a nucleotide made up of?

A nucleotide is made up of a sugar, a phosphate group and a base.

What are the four bases in DNA?

Adenine, Guanine, Cytosine and Thymine.

What is complementary base pairing?

Complementary base pairing is the specific pairing of bases in DNA: Adenine pairs with Thymine (A-T) and Guanine pairs with Cytosine (G-C).

How are the two strands of DNA held together?

The two strands of DNA are held together by hydrogen bonds between pairs of bases.

What forms the backbone of a DNA strand?

The backbone of a DNA strand is formed by alternating sugar and phosphate groups.

What does the sequence of DNA bases determine?

The sequence of DNA bases makes up the genetic code, which instructs cells to produce specific types of proteins, determining the genotype and distinguishing different living organisms.

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