Continuity of Life

• Meiosis is the process that produces gametes (egg or sperm) from diploid cells, which are then fertilized to produce new organisms.
• Haploid cells have one set of chromosomes
• diploid cells have 2 sets of chromosomes
• chromatin is a combination of DNA and proteins that make up chromosomes
• Ribosome is where protein synthesis occurs
• histone proteins are the main components of chromatin and are responsible for the structure of the nucleosome
• mitosis is the process of nuclear division during which a eukaryotic cell divides into two identical daughter cells
• Sister Chromatids are copies of the same chromosome joined together at the centromere
• meiosis only occurs in the gonads
• parts of a nucleotide are: a phosphate group, deoxyribose sugar, and a nitrogenous base
• interphase is the stage of the cell cycle where the cell grows and copies its DNA.
• the G1 phase is when the cell prepares to divide. It consists of a growth phase and a DNA replication phase
• G2 phase is when the cell does the final preparation for mitosis
• centrosomes contain two centrioles which organise spindle fibres