dna discovery
what did watson and crick do
discovered the doubel helix of dna
what enzyme unzips / unwinds the DNA
helicase
what happens in G1
explain what happens during interphase
the cell is growing and making dna, this is where the cell spends most of its life
What are the 2 types of cell death
apopotosis and necrosis
the nitrogenous bases of dna are held together by _____ bonds
hydrogen
what enzyme is responsible for bringing in new nucleotide bases?
DNA polymerase
what stage of the cell cycle is interphase? Tell me the letters
g1, s, g2
what stage do the chromosomes condense
prophase
how do we get necrosis
from an injury or trauma
the backbone of DNA is made out of
sugar and phosphate
When DNA is replicated we end with _____ _________ strands
BOnus 100: the parent strand serves as the ________
two, identical
template
what stage of the cell cycle does dna synthesis take place in?
S
what happens during metaphase and telophase
metaphase they go to the middle and anaphase they get pulled apart
a mass of cells is called a
bonus 100: what are the two kinds of tumors
tumor
benign: kind
malignant: mean
a purine is ________________?
bonus 100: who is the lady that took famous "photo 51"
a double ring structure
rosalind franklin
tell me the steps of dna replication in order
1. helicase unzip
2. primase identifies area that needs replicated
3. dna polymerase brings in new nucleotide pairs
4. two identical dna strands are made
What is the phase of the cell cycle where PMAT happens
M phase
what stage does the cell start to form two new cells
bonus 100: How many chromosomes does each have
telophase
46
programmed cell death, when a cell is defective it is programmed to self destruct
Describe DNA structure
a double helix, consisting of AT GC and hydrogen sugar phosphate backbone
what is the area called where replication occurs?
the replication fork
the cytoplasm being cut is called
cytokinesis
condensed dna is called a
chromosome
cancer has spread. this is called
metastasis