Life and Death
DNA Replication
Enzymes
Mitosis
Meiosis
100
This type of division replaces old or damaged cells in the body.
What is mitosis?
100
This word describes all of the genetic material found in a cell.
What is a genome?
100
These enzymes unwind the DNA during replication.
What are helicases?
100
During this phase of mitosis, the nuclear envelope and the nucleolus reform, the spindle disappears, and chromosomes decondense.
What is telophase?
200
This form of cell division is used only to produce haploid gametes.
What is meiosis?
200
Nucleotides are always added to this end of a new DNA strand.
What is the 3' (three prime) end?
200
These hold the strands of DNA apart.
What are binding proteins?
200
During this phase of mitosis, chromosomes align along the cell's equator.
What is metaphase?
200
Hedgehogs have 90 chromosomes in their somatic or body cells. How many chromosomes would be present in their gametes?
What is 45?
300
This set of coordinated events dismantles cells in an orderly fashion to carve out new structures or to weed out aging and defective cells.
What is apoptosis?
300
DNA replication begins simultaneously at several of these.
What is the origin of replication?
300
These enzymes form covalent bonds between adjacent DNA segments that are not yet attached.
What are DNA ligases?
300
During this phase of mitosis, the centromeres split as sister chromatids are pulled to opposite poles of the cell.
What is anaphase?
300
This event during prophase I allows genetic recombination to take place
What is crossing over?
400
This word describes what must happen for a haploid cell to become a diploid cell.
What is fertilization?
400
Write on the board the DNA sequence that is complementary to this one: 3'AGTCGTAAATGCCCAGT5'
5'TCAGCATTTACGGGTCA3'
400
Daily double!! Name the three parts of interphase.
What are G1, S, and G2?
400
During this phase of mitosis, the nuclear envelope breaks up completely and spindle fibers attach to the kinetochores.
What is prometaphase?
400
These structures are separated during Meiosis II.
What are identical sister chromatids?
500
This is the name for a fertilized egg that will soon begin growing and dividing.
What is a zygote?
500
On this, DNA polymerase adds nucleotides in the opposite direction from helicase movement.
What is the lagging strand?
500
This enzyme adds new nucleotides to the growing strand.
What is DNA polymerase?
500
This is the phase that cells enter when they are not actively preparing for mitosis; they may stay here indefinitely.
What is G0 phase?
500
These structures are separated from each other during Meiosis I.
What are homologous pairs?
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