Cell division Flashcards
what is the smallest unit of life
cell
what is the biggest organelle of a eukaryotic cell
A nucleus
what is found in the nucleus
DNA
what is DNA and what does it stand for
DNA contains genetic material and it stands for deoxyriobonucleic Acid
what does DNA look like inside the nucleus
DNA looks like double stranded of a ladder and jumble like a ball of yarn
what is genetic material
Genetic material are genes of traits that can be passed on from parents to offspring
How does DNA grow and develop and reproduce
DNA reproduce through stages called inter phase and mitosis
what happens during inter phase
inter phase is when DNA develops 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 chromatids
what is chromatids?
a DNA neatly wrapped up
what is a chromosome
when DNA wraps around a protein it is called a chromosome
how many chromosomes do humans have
humans have 46 chromosomes
how many chromosomes do each parent pass on to their offspring
23 chromosomes from each parent
each segment of DNA is known as a what
Gene
what does gene contain
Genetic traits
what are the 5 phases of mitosis?
1.phrophase 2.metphase 3.anaphase 4.telophase 5.cytokenisis
what happens during mitosis
during mitosis chromosomes go through 5 phases
what happens during each phase
phase 1: prophase chromosomes start to appear
what happens during each phase
phase 2: metaphase chromosomes line up
what happens during each phase
phase 3: anaphase chromosomes separate
what happens during each phase
phase4: telophase chromosomes pinch
what happens during each phase
phase 5: cytokineses 2 new daughter cells
how many chromosomes do humans sex cells have
23 chromosomes in each sex cells (egg or sperm)
