Question

1. what does dna stand for? deoxyribonucleic acid
2. what are the two places in a cell where i could find dna?
3. what are the four chemical bases in dna?
4. how many bases does dna consist of?
5. what three things make up a nucleotide?
6. how are nucleotides arranged?
7. what forms the dna ladder’s rungs? _. what two things form the vertical sidepieces of the ladder? _

use the information from your notes and what you have learned to label the below image:

1. label the image below...place the phosphate group, the five carbon sugar, and the base in the appropriate box

dna structure history
http://www.dnaftb.org/19/bio - 3.html

1. where did rosalind franklin go to college and what subject did she study?
2. in 1951, franklin was offered a 3 year research scholarship where?
3. franklin worked with raymond gosling and was able to get photos of dna fibers. what did she conclude from these photos (two things)?

Explanation:

1. DNA is found in the nucleus and mitochondria of a cell. The nucleus contains most of the cell's genetic material, and mitochondria have their own small - amount of DNA.
2. The four chemical bases in DNA are adenine (A), thymine (T), guanine (G), and cytosine (C).
3. DNA consists of billions of bases.
4. A nucleotide is made up of a phosphate group, a five - carbon sugar (deoxyribose in DNA), and a nitrogenous base.
5. Nucleotides are arranged in two long strands that form a double - helix structure.
6. The rungs of the DNA ladder are formed by base pairs (A - T and G - C), and the vertical sidepieces are formed by alternating sugar and phosphate groups.
7. Rosalind Franklin went to Newnham College, Cambridge and studied chemistry. In 1951, she was offered a 3 - year research scholarship at King's College London. From the DNA fiber photos, she concluded that DNA had a helical structure and two forms (A and B forms).

Answer:

1. Nucleus, mitochondria
2. Adenine, Thymine, Guanine, Cytosine
3. Billions
4. Phosphate group, five - carbon sugar (deoxyribose), nitrogenous base
5. In two long strands forming a double - helix
6. Base pairs; Sugar and phosphate groups
7. Newnham College, Cambridge; Chemistry; King's College London; DNA had a helical structure and two forms (A and B forms)