cell division Flashcards
What is the smallest unit of life?
Cell
What is the biggest organelle eukaryotic cell?
Nucleus
What is found in the nucleus?
DNA
What does DNA and what does it stand for?
Deoxyribo Nucleuic Acid
What does DNA look Like inside a nucleus?
DNA looks like a double stranded of ladder and jumble up like a ball of yarn
What is genetic material
Genes or traits that can come from the parents
How does DNA grow and develope and reproduce
DNA reproduce through stages called INTERPHASE and MOTISIS
What happens during interphase
Interphase is when DNA devolopes and goes through replication
What does replication mean
copy or duplicate
What happens during replication
DNA replicates itself and wrap up tightly and neatly into chromatid
What is a chromatid
A DNA that is neatly wraped up (two chromatin/singular:chromatids
What is a chromosome
When DNA wraps around a protein it is called a chromosome
How many chromosomes do humans have
46
How many chromosomes does each parent pass on to their offspring
23 from each
Each segment of DNA is known as a what
Gene
What does a gene contain
Genetic traits
What happens during Mitosis
During Mitosis chromosomes go through 5 phases
What are the 5 phases of mitosis (1.)
Ph 1: prophase, Metaphase, Anaphase,Telophase,cytokinesis
What happens during each phase (2.)
2:Prophase chromosomes appear
What happens during each each phase (3.)
3:Metaphase chromosomes line up
What happens during each phase (4.)
4:Telophase chromosomes pinch
What happens during each phase (5.)
5:Anaphase chromosomes seperate
What happens during each phase (6.)
6:Cytokenesis-two new daughter cells form
How many chromosomes do human sex cells have
23 chromosomes in each sex cell (egg or sperm)
