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DNA AND RNA Questions(pg 101-102)
1. What does a DNA molecule look like?
DNA looks like a twisted ladder
2. What are the two sides of the DNA molecule made up of?
Phosphate and sugar
3. What kind of a sugar makes up a DNA?
Deoxyribose
4. What are the rungs of the DNA molecule made up of?
Nitrogen bases
5. What are the four nitrogen bases ?
Adenine, Thymine ,Cytosine, Guanine,
6. What does adenine (A) pair up with?
Thymine
7. What does guanine pair up with?
Cytosine
8. What is DNA replication?
DNA unzips and the nitrogen bases that are floating in the nucleus pair up
with each half of the DNA molecule. One DNA strands becomes two .
9. One section of a strand of a DNA strand has the base sequence
AGATTC. What is the base sequence on the other strand?
TCTAAG
DNA AND RNA Questions(pg 132-133)
10.What is the relationship between gene and DNA?
A gene is a section of DNA that contains information to code for a
specific protein. It is an active part of DNA
11.What is protein synthesis ? How are proteins made?
During protein synthesis , the cell uses the information on a gene located
on a chromosome to produce a specific protein.
 The information from the DNA is copied on to MRNA in the form
of three base code in the nucleus,
 The Mrna then goes to the ribosomes.
 This message is then translated by the Trna which brings the amino
acids to the ribosomes.
 The amino acids then connect together to make the proteins
12. What are the three differences between DNA and RNA? pg 133
DNA
RNA
Is double stranded
Contains dereoxyribose sugar
Contains nitrogen bases ATCG
Is single stranded
Contains ribose sugar
Contains nitrogen bases AUCG
13. What are the three types of RNA?
mRNA
Copies the message from DNA in
the nucleus and contain information
in for of three bases(codon)
tRNA
It translate the message on Mrna
and carries the amino acids that
correspond to the three
bases(codon)
Rrna
It is the site of protein synthesis
14. Draw the diagram on pg 132-133