Download 1.What does DNA stand for?

DNA PPT REVIEW QUESTIONS 1.What does DNA stand for?
Deoxyribonucleic Acid
2. Why is DNA replication important?
It carries all of our genetic information
3. Describe what a DNA molecule looks like.
Twisted ladder - double helix
4. What are the sides of a DNA molecule made of?
Sugar and Phosphate
5. What are the “rungs” of a DNA molecule made of?
Bases and a hydrogen bond
6. What are the names of the 4 rungs on a DNA molecule?
Adenine
Thymine
Guanine
Cytosine
7. What does Adenine pair with?
Thymine
8. What does Guanine pair with?
Cytosine
9. What 3 things is a nucleotide made of?
Sugar, Phosphate, base
10. Draw a picture of a DNA molecule and label the parts.
11. List the steps of DNA replication.
1. DNA molecule separates & unwinds between nitrogen pairs
2. Nitrogen bases pair up with bases on each ½ of the original DNA
3. TWO IDENTICAL strands of DNA!
12. What is the name of the organelle in a eukaryotic cell that contains DNA?
nucleus
Write the corresponding base pairs for the following nitrogen bases:
13. . A T T G A C A C C G T A G G
TAACTGTGGCATCC
14. T G G G C A T T A C G A A T
ACCCGTAATGCTTA
15. C G A A A T G C A A T G C A
GCTTTACGTTACGT
16. A A T G C C A T G C A T T C
TTACGGTACGTAAG
17. Describe what “semiconservative replication” means.
After replication, there are TWO DNA molecules:
○
Each new DNA molecule has one original strand and one brand new strand (semiconservative
replication).