DNA
Presentation
•
Science
•
10th - 12th Grade
•
Practice Problem
•
Easy
Sharon Payne
Used 10+ times
FREE Resource
9 Slides • 8 Questions
1
DNA
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DNA
is a nucleic acid
stands for Deoxyribonucleic acid
can be found in all living things
contain the instructions for life
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Multiple Choice
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DNA
is made of nucleotides
is a double helix
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Nucleotides have three parts:
5 carbon sugar called doxyribose
a phosphate group
a nitrogen base: A, T, C or G
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Multiple Choice
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Multiple Select
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There are four nitrogen bases:
Adenine
Thymine
Cytosine
Guanine
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Chargaff's Rule
A goes ONLY with T
C goes ONLY with G
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Multiple Choice
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DNA is copied
during a process called replication
this occurs during the S phase of interphase
turns homologous pairs into sister chromatids
in the nucleus of eukaryotic cells
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Multiple Choice
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When DNA replicates
DNA Helicase "scissors" cuts the DNA double helix to open a replication fork
DNA Polymerase "pencil" add the complementary A, T, C and G's
DNA Ligase "glues" it all back together
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Multiple Choice
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Multiple Choice
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The two "new" DNA molecules include
one strand of old DNA
one strand of new DNA
considered semi-conservative
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Multiple Choice
DNA
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