Misc.
DNA Replication
Cell Cycle
Mitosis
Meiosis
Transcription
and translation
and translation
Lucas' DNA Dad Jokes
100
If a piece of DNA has 56 Thymines, how many Adenine would it have?
56 adenine
100
What is the 1st step of DNA replication?
DNA is unwound and split by helicase
100
What happens at the end of mitosis?
Cytokinesis
100
What is the purpose of Mitosis?
Mitosis produces 2 IDENTICAL daughter cells
100
What is the purpose of meiosis?
genetic variation!; create 4 daughter cells with slightly different DNA in each (occurs through independent assortment, crossover recombination)
100
What is the base pairing rule for transcription
A >> U
T>>> A
C>>> G
G >> C
100
What did the toes say when the hammer was dropped (why?)
Mitosis - because now the skin cells need to go through mitosis for repair
200
What part of the cell cycle would cancer spend most of its time? (Interphase or Mitosis)
Mitosis -- it's constantly dividing!
200
What is the 2nd step of DNA replication?
the weak hydrogen bonds break and 2 strands separate
200
In what part of the cell does DNA replication occur?
the nucleus
200
What should happen if a cell fails a checkpoint?
Cell should undergo APOPTOSIS (cell death). Some cells bypass the check and may become cancerous.
200
how many chromosomes do you end up with after meiosis and what are they called
23 and haploid or gamete cells
200
What are you making from transcription and what enzyme is involved?
Making RNA and RNA Polymerase is involved
200
What do you call a friendly Protein
Amigo Acids
300
What are each of these parts?
A: Deoxyribose Sugar
B: Phosphate
C: nitrogenous base
300
What is the 3rd step of DNA Replication?
new nitrogenous bases form from help of DNA polymerase
300
What part of the cell cycle do cells spend most of their time?
Interphase!! (90%)
300
What happens after the chromosomes line up in the middle?
Spindle fibers separate chromosomes and pull them to either side of the cell
300
What is the difference between mitosis and meiosis? give at least 3
-create 4 daughter cells with meiosis
-go through phases twice in meiosis
-first round of meiosis includes crossover and recombination
-meiosis I homologous chromosomes separate, meiosis II sister chromatids separate
-no DNA replication during meiosis II
300
What is a start codon and what amino acid does it make
Sequence of rna codon that starts protein synhesis - UAG codes for Methionine
300
What a distracted cell says during mitosis lesson
you have my undivided attention
400
What is cancer?
Uncontrolled cell division
400
What does semi-conservative mean?
DNA strands have one old strand and one new strand
400
During which phase of the cell cycle does DNA replication occur?
DNA in the cell is replicated during Interphase (S phase)
400
What happens after the chromosomes separate?
The cell pinches in the middle (cytokinesis) and 2 identical cells are produced
400
What are the stages of Meiosis II, what do they do
Prophase II - Chromosomes appear, nucleus dissapears,
Metaphase II - Chromosomes line up in the middle
Anaphase II - chromatids are pulled apart
Telophase II - 4 new cells form haploid
Cytokinesis - splitting of cytoplasm, 4 gamete cells, either eggs or sperm
400
Give the amino acids formed by this strand of DNA
TAC AAA TTG ACU
Methionine Phenyalanine Asparagine Stop
400
What does dna translation do in cold weather?
Put its codon!
500
Describe the structure of DNA
Double Helix
500
What is the purpose of DNA Replication?
Duplicate DNA so each daughter cell after mitosis has an identical copy of the DNA
500
If a fly has 10 chromosomes in each of its body cells, how many chromosomes will be in each daughter cell after mitosis?
10
500
What structure(s) allow for chromosomes to separate and move during mitosis?
Spindle fibers
500
What are the stages of Meiosis I and what happens in each stage
Prophase 1 - Chromosomes appear, nucleus dissapears, homologous chromosomes crossover
Metaphase I - homologous chromosomes line up in the middle and go through independent assortment
Anaphase 1 - Chromosomes are pulled apart by spindle fibers
Telophase 1 - 2 new cells form
Cytokinesis - splitting of cytoplasm
500
Where does tRNA enter and what does it carry?
A site on ribosome and carries anticodon and amino acid
500
Why did the gene crossover?
To get to the non-sister homologue chromosome