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WorksheetsDNA Structure
Total questions: 18
Worksheet time: 9mins
What letter represents a purine?
W
X
Y
Z
Which color base represents thymine?
dark green
light green
orange
yellow
What carbon can form a bond with another nucleotide?
2'
3'
4,
5'
How many hydrogen bonds form between cytosine and guanine?
1
2
3
4
What type of bond does letter Y represent?
glycosidic bond
hydrogen bond
peptide bond
phospodiester bond
What carbon forms a phosphodiester bond with a phosphate group?
1'
3'
5'
6'
What base is the orange nucleotide?
adenine
cytosine
guanine
thymine
Which two bases are pyrimidines?
adenine and thymine
adenine and guanine
cytosine and guanine
cytosine and thymine
The work of which scientist(s) determined that DNA is the hereditary material instead of proteins?
Chargaff
Griffith
Hershey and Chase
Franklin
Which is NOT a component of a DNA nucleotide?
phosphate group
deoxyribose
nitrogenous base
amino acid
The work of which scientist(s) determined base pairing rules?
Chargaff
Griffith
Hershey and Chase
Avery
Which of these statements is false regarding photo 51?
It confirmed that DNA was a helical shape.
It confirmed the parts of a nucleotide.
It confirmed the base-pairing rules.
It confirmed that DNA is antiparallel.
If a sample of DNA from a wheat plant has 23% cytosine, how much adenine should it also contain?
23%
27%
54%
77%
What carbon attaches to the nitrogenous base in a nucleotide?
1'
2'
3'
5'
How many hydrogen bonds will form between a base pair involving thymine?
1
2
3
4
A strand of DNA has the sequence 3'GGCATAGC5'. What is the sequence of nucleotides on the other DNA strand when read in the same direction as the first strand?
3'CCGTATCG5'
5'CCGTATCG3'
3'AATGCGAT5'
5'AATGCGAT3'
Which phrase describes the base pairings that occur in DNA?
purine + purine
pyrimidine + pyrimidine
purine + pyrimidine
Which carbon is involved in dehydration synthesis reactions for building a DNA polymer?
1'
3'
4'
5'
