Download Cell Cycle and DNA Power Point Notes

Name: _________________________________
Period: __________
Cell Cycle and DNA Power Point Notes
https://www.youtube.com/watch?v=JcZQkmooyPk
1. What are two reasons cells must divide?
_____________________________________________________________________________________
_____________________________________________________________________________________
2. Interphase is made up of __________________, _________________ and ____________________.
3. In G1 phase, cells __________________________ bigger.
4. In S phase DNA undergoes ______________________________________________.
4. In G2 phase, the cell prepares for __________________________________________.
5. Cell Division is made up of ___________________________ and _______________________________.
6. In mitosis, the nucleus of the cell divides. There is still only one cell.
The four phases of mitosis are ______________, _______________, ______________and ______________.
7. In cytokinesis, the cell divides into two cells, each with a nucleus.
Cytokinesis begins from the outside in animal cells by formation of a _____________________________
and the inside in plant cells by formation of a _________________________________________________.
8. After cell division, instead of one cell, there are ______identical daughter _______________.
9. Prokaryotes or bacteria don’t have a nucleus, so they can’t undergo mitosis. This process is called
_____________________ _____________________ in bacteria.
10. A chromosome is made up of ___________________________________________________________.
11. ______________________ is a long, thin fiber that is folded and coiled by histone proteins to form a
chromosome.
12. Sister chromatids are identical chromosomes attached to each other by a __________________________.
13. DNA is made of building blocks called ____________________________________________.
The three parts of a nucleotide are:
____________________________, ________________________________, ________________________
14. There are ____ different nucleotides in DNA. They are abbreviated as a single uppercase letter.
They are ______, ______, _______, ________.
15. Only the
____________________________________________
is different in the 4 nucleotides, the sugar and
phosphate are the same.
16. The nucleotides are arranged in a
__________________ _____________________.
17. The nitrogenous bases are held together by weak
hydrogen bonds. The alternating sugar/phosphate
backbone is held together by strong covalent bonds.
The two rules for base pairing to make the double helix
are:
______ only pairs with ________
______only pairs with ________