Cell devision Flashcards
Name a human cell that is haploid
Chromosome
What is meant by diploid number of cells
Two copies of each chromosome
State a function of mitosis in a single-celled organism
asexual reproduction
State a function of mitosis in a multi-celled organism
growth and repair
State one way in which mitosis differs from meiosis
mitosis- genetically identical cells
meiosis- genetically varied cells
How many cells are formed when a cell divides by mitosis?
2 identical daughter cells
List the stages of mitosis
- Prophase
- Metaphase
- Anaphase
- Telophase
What term is used to describe a group of disorders of the body in which cells lose the normal regulation of mitosis?
Cancer
Give one function of meiosis
- allows chromosome number to be maintained
name the 2 processes that involving DNA that take place in interphase
- DNA replication
2. protein synthesis
Functions of mitosis
- Multiplication and reproduction
Describe Prophase
- Chromatin contracts
- Chromosomes become visible
- Nuclear membrane breaks down
- Spindle fibres form
Describe Metaphase
- Chromosomes line up along the equator
2. spindle fibres attach centromere
Describe Anaphase
- Spindle fibres contract
2. chromosomes are pulled to each pole
Describe Telophase
- Chromosomes elongate
- Spindle fibres break down
- nuclear membrane forms
- two new identical cells are formed
