Quiz on content from Lecture One of Genetics module.
Friedrich Miescher
Rosalind Franklin
Alfred Hershey
Francis Crick
The structure is double-helical
Phosphate groups lie on the outside of the molecule
The helix is 20 nanometers in diameter
DNA has directionality (5' and 3' ends)
DNA has four nitrogenous bases
True
False
True
False
Two hydrogen bonds form between adenine and thymine, whereas three form between cytosine and guanine. Bonding is therefore stronger between C and G.
Two hydrogen bonds form between cytosine and guanine, whereas three form between adenine and thymine. Bonding is therefore stronger between A and T.
Two hydrogen bonds form between both adenine and thymine, and cytosine and guanine. Bonds between the two bases are equally as strong.
Three hydrogen bonds form between both adenine and thymine, and cytosine and guanine. Bonds between the two bases are equally as strong.
Adenine and thymine are purines. Cytosine and guanine are pyrimidines.
Adenine and guanine are purines. Cytosine and thymine are pyrimidines.
Guanine and cytosine are purines. Adenine and thymine are pyrimidines.
Cytosine and thymine are purines. Adenine and guanine are pyrimidines.
This one!
This one!
Option 3
Option 4
True
False
5′-AATTCCGACCA-3′
5′-ACCAGCCTTAA-3′
5′-TGGTCGGAATT-3′
5′-TTAAGGCTGGT-3′
6 x 10^9 base pairs
6 x 10^6 base pairs
6 x 10^12 base pairs
6 x 10^3 base pairs
DNA wraps twice around 8 histone proteins to form nucleosomes.
DNA wraps once around 8 histone proteins to form nucleosomes.
DNA wraps twice around 8 histone proteins to form nucleotides.
DNA wraps once around 8 histone proteins to form nucleotides.
True
False
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