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SFHS IB Bio test mitosis/meiosis

Mitosis/ Meiosis test
STUDY
PLAY
Nucleotide
Subunit of DNA
Sugar in Dna
Deoxyribose Sugar
Four bases in DNA
Adenine, Guanine, Cytosine, Guanine
Purines
Adenine, Guanine (Two rings)
Pyrimidines
Cytosine, Thymine (One ring)
Base Pairing
Adenine+ Thymine, Cytosine+ Guanine
Nitrogenous Bases
Held together by hydrogen bonds
Nucleotides
Held together by covalent (phosphodiester) bonds
Gene
Composed of DNA, a heritable factor that controls a specific characteristic
Allele
One specific form of a gene differeing from other Alleles by one or a few bases only and occupying the same gene cocus as other aleles of that gene
Genome
The whole genetic information of the organism
Gene Mutation
A change in the base sequence of an allele
Sickle Cell Anemia
Cells become sickle shaped, cant hold as much oxygen, leads to necrosis of the tubules, kidney damage or failure and possible death
Sickle Cell mutation
Changes a single base (T Replaces A)
Cell Cycle
Repeating set of events that make up life of a cell
Interphase
G1, S, G2
G1
Cell grows and matures, performs normal differentiated functions: Protein Synthesis, respiration, gylcolysis, transcription
S Phase
DNA Replication
G2
Cell prepares for division, mitochondria and chroloplast replication
M Phase
Nucleus Divides
Cytokinesis
Cytoplasm divides to form two cells
G0
Exits cell cyle
Apoptosis
Programmed cell death
Haploid
1n
Diploid
2n
Metaphase
Chromosomes line up at the equator
Anaphase
Sister Chromosomes seperate and move to opposite poles
Telophase
Chromosomes start to return to chromatin and nucleus starts to return
Growth and Embroyonic development
This involves increasing the number of differientated cells
Tissue Repair
Dead or damaged cells are replaced by new cells
Asexual Reproduction
Bacteria, Clones