Cell Division Flashcards
What does DNA stand for
Deoxyrebonucleic acid
What are amino acids
Amino acids are chemicals inside our body. the building blocks of protein
For wat mitosis is essential for?
Mitosis is essential for growth and development and repair
When does mitosis take place
Mitosis takes place whenever a new cell is needed
When does mitosis occur
Mitosis occurs in early stages of development or when new cells are needed in the body
Where is chromosome found
Chromosomes r are found in the nucleus
What are chromosomes made of
Chromosomes are made of the molecule DNA
How many chromosomes do human body contain
46 chromosomes in total, with 24 pairs of chromosome
What do chromosomes contain
A large number of genes which determine many of our features
What do genes do
Genes determine many of our features
The process a cell goes through each time it divides.
Cell cycle
What’s a cell cycle
The process a cell goes through each time it divides.
Cells can divide by what
Mitosis and meiosis
3 main stages of mitosis
In the first stage DNA replicates to form two copied of each chromosome
In the second stage mitosis takes place
In the final stage, the cytoplasm and the cell membrane divide to form 2 identical cells.
Functions of mitosis
Growth
Repair
Asexual reproduction
Maintains chromosome
Wha does the growth do in mitosis
Helps the organism grow by increasing the number of cells
How repair helps mitosis
Replaces damaged cells (e.g healing wound)
Hiw does repair help mitosis
Replace damaged cells(e.g heal wounds)
Asexual reproduction in mitosis
Ensures each new cell had the same genetic information as the parent dell
6 Stages of Mitosis
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
How many stages r there for mitosis
4
What happens in prophase
Chromosomes get shorter and thicker,and the nucleus starts to break down
What happe s in metaphase
Chromosomes line up in the middle of the cell
What happens in anaphasr
Chromosomes are pulled apart to opposite sides of the cell
