Flashcard DNA Structure Function and Review

Front

What is Chargaff's rule for base pairing in DNA?

Back

Chargaff's rule states that in a DNA molecule, the amount of adenine (A) is equal to the amount of thymine (T), and the amount of cytosine (C) is equal to the amount of guanine (G).

Front

If a DNA molecule contains 30.9% adenine, what is the likely percentage of thymine?

Back

29.8% (based on Chargaff's rule).

Front

What is the process of making a copy of DNA called?

Back

DNA replication.

Front

What is the role of enzymes in DNA replication?

Back

Enzymes split the DNA molecule into two strands and transport corresponding nitrogenous bases to each strand.

Front

What are the four nitrogenous bases found in DNA?

Back

Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

Front

What type of molecule is likely to be an enzyme?

Back

A molecule that ends with '-ase' is probably an enzyme.

Front

What is the function of DNA polymerase in DNA replication?

Back

DNA polymerase synthesizes new DNA strands by adding nucleotides complementary to the template strand.

Front

What is the significance of the double helix structure of DNA?

Back

The double helix structure allows for the stable storage of genetic information and facilitates replication and transcription.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains deoxyribose sugar, while RNA is single-stranded and contains ribose sugar.

Front

What is the role of helicase in DNA replication?

Back

Helicase unwinds the double helix and separates the two strands of DNA.