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Life Science Review 6.1
Test Description: What Does DNA Look Like
Instructions: Answer all questions to get your test result.
1) _________ are located in a cell's _________
A
nucleus; DNA
B
chromosomes; nucleus
C
DNA; genes
D
chromosomes; genes
2) What is not a component of nucleotides?
A
sugar
B
acid
C
phosphate
D
base
3) What is not a nitrogenous base in DNA?
A
adenine
B
guanine
C
cytosine
D
uracil
4) What is Chagraff's rule?
A
there are 4 nitrogenous bases in nucleotides
B
DNA can be seen using X-ray diffraction
C
DNA is a double helix
D
the amount of adenine equals the amount of thymine
5) The________ of DNA are made of _______________
A
2 of the choices
B
rungs; alternating sugar parts and phosphate parts.
C
sides; alternating sugar and phosphate parts
D
sides; bases
6) Which bases are complementary?
A
G and T
B
A and T
C
G and A
D
C and T
7) Replicated DNA is made of
A
one new strand and one old strand
B
2 of the choices
C
2 old strands
D
2 new strands
8) Which of the following is correct
A
the rungs of the DNA ladder are made of alternating sugar and phosphate parts
B
DNA is copied every time a cell divides
C
each base binds with 2 other bases
D
every new cell created by replication gets half a copy of DNA
9) Bases on each side of DNA form a _______ for a new strand
A
copy
B
pattern
C
molecule
D
gene
10) Who built a model of DNA?
A
2 of the choices
B
Francis Crick
C
Francis Watson
D
James Watson
*select an answer for all questions
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