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WorksheetsBiology: DNA Structure and History
Total questions: 15
Worksheet time: 30mins
Which two scientists are given the credit for discovering the structure of DNA?
Watson and Crick
Chargoff and Franklin
Wilkins and Crick
Crick and Franklin
DNA is a polymer, which means it's made up of many repeating single units (monomers). What are the monomers of DNA?
Carbon
Nucleotides
Hydrogen Bonds
Nucleic Acids
The "backbone" of DNA, the sides of the twisted latter, is made up of two components. What are these?
Hydrogen and Carbon
Adenine and Thymine
Sugar and Phosphate
Nitrogenous Base and Sugar
Which of these is not a possible nitrogenous base in a DNA molecule?
Adenine
Thymine
Guanine
All of these are possible bases
What ingredients would I need in order to create a nucleotide for DNA?
Deoxyribose sugar
Phosphate group
Nitrogenous base
All of these are needed
Mr. Erwin Chargaff is credited for discovering the property of base pairing in DNA. When studying DNA, he noticed that certain nitrogenous bases liked pairing with each other. Which of these base pairings is correct?
Cytosine and Guanine
Adenine and Thymine
Both of these are correct
None of these are correct
The base pairs are held together by weak attractive forces that allow DNA to separate or unzip itself when it is time for replication. What do we call these bonds between nitrogenous bases?
Covalent Bonds
Hydrogen Bonds
Filial Bonds
Phosphodiester Bonds
Watson and Crick were only able to determine the shape of DNA after being shown an X-ray diffraction image of DNA that was taken by a female colleague of theirs. What is her name?
Rosalind Franklin
Rachel Carson
Mae Jemison
Marie Curie
Which of these would be the complementary sequence of nitrogenous bases to the following DNA strand: AGGTCA
GAACTA
TCCAGT
CTTGCC
None of these are correct
According to Chargaff's rule, there are equal numbers of certain nitrogenous bases in DNA due to base pairing. So if we were to inspect a molecule of DNA and 20% of it was composed of Cytosine, what percentage would be composed of Adenine?
20%
30%
40%
25%
According to Chargaff's rule, there are equal numbers of certain nitrogenous bases in DNA due to base pairing. So if we were to inspect a molecule of DNA and 20% of it was composed of Cytosine, what percentage would be composed of Guanine?
20%
30%
40%
25%
