What is mitosis?
Mitosis is the DNA replication stage in somatic cells (non sex cells). It involves replication of DNA and ONE division of DNA to produce two genetically identical daughter cells. The stages specific to mitosis is PMAT: Prophase (DNA replicates); Metaphase (chromosomes align along the equator of the cell); Anaphase (chromosomes are separated by the chromatid) and Telophase (chromosomes move to opposite ends and nuclei is formed). The daughter cells are genetically identical to the parent cell. Reasoning for cells that undergo mitosis is for replacement, repair and growth.
SN
Related Biology GCSE answers
All answers ▸Neurons do not make direct contact but are separated by synapses. Impulses cross a synapse by means of a neurotransmitter. Describe the process of neurotransmitter release at a synapse. You may use a labelled diagram.
Where is DNA found in a human cell? What is a gene?
Different enzymes catalyse specific reactions. Explain why enzymes can only catalyse specific reactions.
name 4 ways the lung is adapted for gaseous exchange