1. Formative assessment—DNA structure and replication
1/13/2014
N. Brown’s classes

2. 1 Every nucleotide is made up of…
Sugar
Phosphate
Nitrogen base
All of the above

3. 1 Every nucleotide monomer is made up of…
Ribose Sugar
Phosphate
Nitrogen base
All of the above
In ribonucleotides of RNA, this C of the ribose is bonded to an H and to an OH group. In deoxyribonucleotides of DNA, this C shows 2 H bonded instead---deoxy- means w/o an O!

4. 2 Regarding the nitrogen bases, Adenine always bonds with which one?
Cytosine
Thymine
Guanine
Uracil

5. 2 Regarding the nitrogen bases, in double stranded DNA, the nucleotide Adenine always bonds with which one?
Cytosine
Thymine
Guanine
Uracil
Note the antiparallel (facing opposite directions) strands joined by complementary nitrogenous base pairs between the deoxyribonucleotides:
A to T and C to G
Hydrogen bonds (H bonds) attract the nitrogenous base pairs to each other and hold the 2 strands of Dna together in the double helix

6. The 2 halves of the DNA double helix are comprised of H bonded complementary, but anti-parallel, deoxyribonucleotide base pairs.

7. 3 DNA contains the code to make what macromolecule?
Glucose
Protein
Carbohydrates
Lipids

8. 3 DNA contains the code to make what macromolecule?
Glucose
Protein
Carbohydrates
Lipids
Each gene contains the pattern for a particular protein (the order in which to put amino acid monomers together to build the polymer called a protein.
Proteins are the tools that carry out all the jobs and build most of the structures in our cells.

9. expression (use) of genes to make proteins

10. 4 The two strands of DNA are bonded together in the middle by their…
Sugars
Phosphates
Nitrogen bases

11. 4 The two strands of DNA are bonded together in the middle by their…
Deoxyribose Sugars
Phosphates groups
Nitrogenous bases
Hhydrogen bonds between the complementary base pairs temporaily join them the two strands—the Hydrogen bonds are broken to allow DNA replication or transcription when mRNA is made.

12. 5 What type of bonds are between the sugars and phosphates in DNA?
Hydrogen
Covalent
Ionic
Metallic

13. 5 What type of bonds are between the sugars & phosphates in DNA?
Hydrogen
Covalent
Ionic
Metallic
Strong permanent covalent bonds link sugars and phosphates into the sides (backbones) of the double helix

14. A C C T G A C T T G A T T G G A C T T A A C C C
6 If one strand of DNA had a sequence of nitrogen bases that read A C C T G A , than the complementary strand would have what sequence?
A C C T G A
C T T G A T
T G G A C T
T A A C C C

15. A C C T G A C T T G A T T G G A C T T A A C C C
6 If one strand of DNA had a sequence of nitrogen bases that read A C C T G A , than the complementary strand is__?
A C C T G A
C T T G A T
T G G A C T
T A A C C C

16. 7 In the following DNA molecule which is the Deoxyribose Sugar4 1 2 3 4 1 2 3

17. 7 In the following DNA molecule which is the Deoxyribose Sugar4 1 2 3 4 1 2 3

18. 8 The letter A at the bottom of the picture represents this monomer unit?
Amino acid
Nucleotide
DNA
mRNA A

19. 8 The letter A at the bottom of the picture represents this monomer unit?
Amino acid
Nucleotide
DNA
mRNA A

20. 9 If a double stranded DNA molecule contains 28 sugars, how many nucleotides would your DNA ladder contain? 1 14 28 42 56

21. 9: If a double stranded DNA molecule contains 28 sugars, how many nucleotides would your DNA ladder contain? 1 14 28 42 56

22. 10 If a particular strand of DNA contains 20% Adenine, what percentage of Thymine can be expected in the complementary strand of DNA? 1%
10%
20%
40%
80%

23. 10 If a particular strand of DNA contains 20% Adenine, what percentage of Thymine can be expected in the complementary strand of DNA? 1%
10%
20%
40%
80%

24. adenine-guanine guanine-cytosine adenine-cytosine cytosine-uracil
11 Which one of the following nucleotide pair bonds would be found in a DNA molecule?
adenine-guanine
guanine-cytosine
adenine-cytosine
cytosine-uracil

25. adenine-guanine guanine-cytosine adenine-cytosine cytosine-uracil
11: Which one of the following nucleotide pair bonds would be found in a DNA molecule?
adenine-guanine
guanine-cytosine
adenine-cytosine
cytosine-uracil

26. 12 The backbone of a DNA molecule is made of which two components?
phosphate molecules and ribose sugars
deoxyphosphate molecules and ribose sugars
phosphate molecules and deoxyribose sugars
deoxyphosphate molecules and deoxyribose sugars

27. 12: The backbone of a DNA molecule is made of which two components?
phosphate molecules and ribose sugars
deoxyphosphate molecules and ribose sugars
phosphate molecules and deoxyribose sugars
deoxyphosphate molecules and deoxyribose sugars

28. 13 Watson and Crick were the first to suggest that DNA is _____.
a short molecule
the shape of a double helix
a protein molecule
the genetic material

29. 13: Watson and Crick were the first to suggest that DNA is _____.
a short molecule
the shape of a double helix
a protein molecule
the genetic material

30. Where does DNA replication take place in a cell?
Cytoplasm
Endoplasmic Reticulum
Golgi Body
Nucleus
Vacuole

31. 14: Where does DNA replication take place in a cell?
Cytoplasm
Endoplasmic Reticulum
Golgi Body
Nucleus
Vacuole

32. 15 DNA is a
Carbohydrate
Protein
Nucleic Acid
Lipid

33. 15: DNA is a
Carbohydrate
Protein
Nucleic Acid
Lipid

34. 16 The monomer units of DNA are called
Deoxyribose
Nucleotides
Adenines
Ribose

35. 16 The monomer units of DNA are called
Deoxyribose
Nucleotides
Adenines
Ribose