Tennessee Science Grade 7

Section 3: DNA

Self-Check Quiz - English

1
DNA code is __________ before being passed to new cells.
A)regenerated
B)destroyed
C)doubled
D)copied
2
The four nitrogen bases that are found in DNA are adenine, guanine, thymine, and _________.
A)cytoplasm
B)chromatid
C)centriole
D)cytosine
3
__________ is a base found in RNA but not in DNA.
A)Adenine
B)Mitosis
C)Uracil
D)Cytoplasm
4
When a mistake happens in the process of copying DNA, the result is called __________.
A)a zygote
B)a mutation
C)a nucleus
D)a chromosome
5
The structure of DNA looks like __________.
A)a twisted ladder
B)a round doughnut hole
C)a straight length of rope
D)a square of fabric
6
Each of your cells uses __________ of the genes in a chromosome.
A)all
B)none
C)two
D)some
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