DNA Replication
Where is DNA located in Eukaryotes?
The Nucleus
What are the three stages of Interphase?
G1, S, G2
What are the four stages of Mitosis?
Prophase, Metaphase, Anaphase, Telophase
What are the two main stages of the cell cycle?
Interphase and M-Phase (Mitosis)
What is the complementary DNA strand?
ATGCGAATCCT
TACGCTTAGGA
What are the four nitrogenous bases? And which ones do they pair with
Cytosine, Guanine, Thymine, Adenine
C with G ; T with A
What happens in G1 phase?
Cells grows, makes proteins, and carries out normal cell processes
What happens before Mitosis can begin?
Interphase, DNA Replication
List all 8 phases of the cell cycle in order.
G1, S, G2, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
What are the three parts of a nucleotide?
phosphate group, deoxyribose sugar, nitrogenous base
What is the complimentary strand of the following DNA sequence?
ATGGCATT
TACCGTAA
What happens during the S phase?
DNA Replication
What happens after/at the end of Mitosis?
Cytokinesis - the cell separates into two
Why does your body go through the cell cycle?
growth, repair
What happens when cells cannot regulate their division?
Cancer!
What is the result of DNA replication?
Two identical DNA strands
What happens during the G2 phase?
Duplication of organelles, cell prepares to divide
What happens during Metaphase?
The sister chromatids line up in the middle of the cell
If a parent cell has 46 chromatids, how many will it have after replication? and how many will its daughter cells each have?
92 after replication and each daughter cell will have 46
What happens when a cell gets too large?
It divides!
What are the steps of DNA replication?
1. Separation of DNA strands
2. Pairing of free floating nitrogenous bases
3. Two new identical DNA strands
Of the two main stages of the cell cycle, which one is the longest?
Interphase
Prophase: centrioles go to opposite sides of cell, spindle fibers from
Metaphase: sister chromatids line up in the middle of the cell
Anaphase: sister chromatids are separated
Telophase: New nuclei begin to form on opposite sides of cell around separated chromatids
What happens during Anaphase and Telophase?
The sister chromatids get ripped apart from each other (anaphase) and new nuclei begin to form around the separated sister chromatids (telophase)
If a DNA strand is 40% Cytosine, what percentage of Thymine is it made of?
10% Thymine