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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
chromosomes; genes
B
DNA; genes
C
chromosomes; nucleus
D
nucleus; DNA
2) What is not a component of nucleotides?
A
phosphate
B
sugar
C
base
D
acid
3) What is not a nitrogenous base in DNA?
A
guanine
B
cytosine
C
adenine
D
uracil
4) What is Chagraff's rule?
A
the amount of adenine equals the amount of thymine
B
there are 4 nitrogenous bases in nucleotides
C
DNA can be seen using X-ray diffraction
D
DNA is a double helix
5) The________ of DNA are made of _______________
A
sides; alternating sugar and phosphate parts
B
rungs; alternating sugar parts and phosphate parts.
C
sides; bases
D
2 of the choices
6) Which bases are complementary?
A
C and T
B
G and A
C
A and T
D
G and T
7) Replicated DNA is made of
A
2 new strands
B
2 of the choices
C
one new strand and one old strand
D
2 old 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
molecule
B
gene
C
copy
D
pattern
10) Who built a model of DNA?
A
James Watson
B
2 of the choices
C
Francis Crick
D
Francis Watson
*select an answer for all questions
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