Welcome to

1
Welcome to

• DNA Review

2
Everybody Ready?

• Are you sure?

3
What does DNA stand for?

• Deoxyribonuleic acid

4
How are the two strands of DNA arranged?

• In a spiral shape
• or double helix.

5
Name the 3 structures found in a nucleotide.

• Phosphate
• Sugar
• Nitrogen Base

6
In DNA, Adenine always matches up with?

• Thymine

7
In DNA, Cytosine always matches with?

• Guanine

8
Name the 4 bases in alphabetical order.

• Adenine
• Cytosine
• Guanine
• Thymine

9
What are the two purines?

• Adenine and guanine

10
What are the pyrimidines?

• Thymine and cytosine

11
Where is DNA found?

• In the nucleus of a cell.

12
What is the main purpose of DNA?

• To make proteins within a cell

13
What does RNA stand for?

• Ribonucleic Acid

14
What base does RNA have that is different?

• Uracil

15
What is tRNA?

• Transfer RNA

16
What is the sequence of bases on DNA that code
for a specific trait called?

• A gene

17
What does mRNA stand for?

• Messenger RNA

18
What is a string of amino acids called?

• A protein

19
The process of duplication of DNA is called?

• Replication

20
How is mRNA different from DNA (3 ways)

• It is single stranded and can leave the nucleus
  by passing through the nuclear pores
• The sugar is ribose instead of deoxyribose
• RNA does not have the nitrogen base thymine
  (uracil instead).

21
Three nucleotides on mRNA are called?

• A codon

22
What is an anticodon?

• It is the tRNA that matches base pairs
  (complimentary) with mRNA.

23
The process by which RNA is produced from DNA is?

• Transcription

24
On which type of RNA is the anticodon found?

• tRNA

25
What is the purpose of mRNA ?

• To arrange amino acids in the correct order to
  make a particular protein.
• To take the DNA message to the ribosome.

26
Where does the mRNA go when it leaves the nucleus?

• Carries the genetic message to the cells
  ribosomes.

27
Where does translation take place?

• At the site of the ribosomes

28
Changing an mRNA message into the protein is
called?

• Translation

29
How many letters are in a genetic word?

• three

30
Match these pairs (DNA)

• Adenine
• Tymine
• Guanine
• Cytosine
• Cytosine
• Tymine
• Guanine

• Tymine
• Adenine
• Cytosine
• Guanine
• Guanine
• Adenine
• Cytosine

31
Match these pairs (RNA)

• Guanine
• Adenine
• Adenine
• Tymine
• Cytosine
• Tymine
• Guanine

• Cytosine
• Uracil
• Uracil
• Adenine
• Guanine
• Adenine
• Cytosine

32
Match tRNA with the mRNA

• AAA
• CGA
• GAU
• GUU
• UAU
• CAU

• UUU
• GCU
• CUA
• CAA
• AUA
• GUA

33
The formation of proteins using information coded
on DNA and carried out by RNA is called?

• Protein synthesis
• Gene Expression

34
What is a polypeptide?

• A protein chain made of amino acids