1. Unit 5 Biology Notes DNA
Objective 1: Describe the structure of DNA. (shape, parts of a nucleotide, and location in the eukaryotic cell)

2. DNA
DNA (Deoxyribonucleic Acid) a nucleic acid that contains all of an individual’s
hereditary or genetic information.
Shape:
Double helix ladder

3. DNA
Parts:
_____________: Pair up to form the rungs of the DNA twisted ladder.
Adenine(A) Complementary Base Pairs
Guanine(G) G – C
Cytosine (C) A – T
Thymine(T)
Nitrogen Bases

4. DNA __________: ________________:
Forms the sides of the DNA ladder and are bonded to a _____.
________________:
5 carbon sugar that bonds with a _________ to form the sides of the DNA ladder.

5. DNA Phosphates: ________________:
Forms the sides of the DNA ladder and are bonded to a _____.
________________:
5 carbon sugar that bonds with a _________ to form the sides of the DNA ladder.

6. DNA Phosphates: ________________:
Forms the sides of the DNA ladder and are bonded to a sugar.
________________:
5 carbon sugar that bonds with a _________ to form the sides of the DNA ladder.

7. DNA Phosphates: Deoxyribose sugar:
Forms the sides of the DNA ladder and are bonded to a sugar.
Deoxyribose sugar:
5 carbon sugar that bonds with a _________ to form the sides of the DNA ladder.

8. DNA Phosphates: Deoxyribose sugar:
Forms the sides of the DNA ladder and are bonded to a sugar.
Deoxyribose sugar:
5 carbon sugar that bonds with a phosphate to form the sides of the DNA ladder.

10. DNA
Nucleotide: basic unit of DNA that is made up of _______________, ____________ and ___________________.
Gene: A specific ____________ _________ in DNA that codes for one ______.

11. DNA
Nucleotide: basic unit of DNA that is made up of one nitrogen base, ____________ and ___________________.
Gene: A specific ____________ _________ in DNA that codes for one ______.

12. DNA
Nucleotide: basic unit of DNA that is made up of one nitrogen base, one phosphate and ___________________.
Gene: A specific ____________ _________ in DNA that codes for one ______.

13. DNA
Nucleotide: basic unit of DNA that is made up of one nitrogen base, one phosphate and one deoxyribose sugar.
Gene: A specific ____________ _________ in DNA that codes for one ______.

14. DNA
Nucleotide: basic unit of DNA that is made up of one nitrogen base, one phosphate and one deoxyribose sugar.
Gene: A specific nitrogen base sequence in DNA that codes for one protein.

15. DNA Location: DNA is located in the ______ of the eukaryotic cell.
Chromosome: A molecule of ____ that is tightly coiled.
A bunch of ______ makes up one chromosome.

16. DNA Location: DNA is located in the nucleus of the eukaryotic cell.
Chromosome: A molecule of ____ that is tightly coiled.
A bunch of ______ makes up one chromosome.

17. DNA Location: DNA is located in the nucleus of the eukaryotic cell.
Chromosome: A molecule of DNA that is tightly coiled.
A bunch of ______ makes up one chromosome.

18. DNA Location: DNA is located in the nucleus of the eukaryotic cell.
Chromosome: A molecule of DNA that is tightly coiled.
A bunch of genes makes up one chromosome.

19. DNA Location: DNA is located in the nucleus of the eukaryotic cell.
Chromosome: A molecule of DNA that is tightly coiled.
A bunch of genes makes up one chromosome.
Humans have 46 chromosomes (23 pairs)

21. Unit 4 Biology Notes DNA, Genes, and Chromosomes
Objective 2: Describe the relationship between DNA, genes, and chromosomes.

22. DNA, Genes, and Chromosomes
Use your book to answer the following questions. Use the index and glossary to help you find the correct pages.
What is the function of DNA?
What is a gene?
How are DNA and genes related?
What are chromosomes?

23. DNA, Genes, and Chromosomes
What is the function of DNA?
To store genetic information
What is a gene?
A gene is a section of the DNA molecule or chromosome that codes (carries the information) for making one protein.

24. DNA, Genes, and Chromosomes
How are DNA and genes related?
Genes are a specific nitrogen base sequence in DNA.
What are chromosomes?
A chromosome is a molecule/strand of DNA that is tightly coiled.

25. Unit 4 Biology Notes DNA as the Unifying Molecule of Life
Objective 3: Analyze the statement: “DNA is the unifying molecule of all living organisms.”

26. DNA as the Unifying Molecule of Life
All living things have DNA in their cells
All DNA is made of the same four basic __________.
All DNA has the same _____, _____ (nucleotides), and _______
The more similar the sequence of nucleotides in two organisms’ genome, the more closely _____ those organisms are to each other.

27. DNA as the Unifying Molecule of Life
All living things have DNA in their cells
All DNA is made of the same four basic nucleotides.
All DNA has the same _____, _____ (nucleotides), and _______
The more similar the sequence of nucleotides in two organisms’ genome, the more closely _____ those organisms are to each other.

28. DNA as the Unifying Molecule of Life
All living things have DNA in their cells
All DNA is made of the same four basic nucleotides.
All DNA has the same shape, _____ (nucleotides), and _______
The more similar the sequence of nucleotides in two organisms’ genome, the more closely _____ those organisms are to each other.

29. DNA as the Unifying Molecule of Life
All living things have DNA in their cells
All DNA is made of the same four basic nucleotides.
All DNA has the same shape, parts (nucleotides), and _______
The more similar the sequence of nucleotides in two organisms’ genome, the more closely _____ those organisms are to each other.

30. DNA as the Unifying Molecule of Life
All living things have DNA in their cells
All DNA is made of the same four basic nucleotides.
All DNA has the same shape, parts (nucleotides), and function
The more similar the sequence of nucleotides in two organisms’ genome, the more closely _____ those organisms are to each other.

31. DNA as the Unifying Molecule of Life
All living things have DNA in their cells
All DNA is made of the same four basic nucleotides.
All DNA has the same shape, parts (nucleotides), and function
The more similar the sequence of nucleotides in two organisms’ genome, the more closely related those organisms are to each other.