B2 - Cell Division Flashcards
(36 cards)
New Cells are needed for an __________ to Grow.
Organism.
New Cells need to ________ Cells that become Worn out and to Repair _________ Tissue.
Replace…Damaged…
Each of your Cells has a Nucleus that contains ____________.
Chromosomes.
Chromosomes carry the Genes that contain the instructions for making both New _______ and all the Tissues and _______.
Cells…Organs…
A Gene is a small packet of ____________ that controls a Characteristic of your Body.
Information.
A Gene is a section of ____.
DNA.
In Body Cells, Chromosomes are found in ______.
Pairs.
Body Cells divide in a series of Stages called the Cell ______.
Cycle.
Cell Division in the Cell Cycle involves a Process called ________ and it produces two Identical _____.
Mitosis…Cells…
During the Cell Cycle, the Genetic ________ is Doubled.
Material.
In Asexual _______________, the Cells of the Offspring are produced by _________ from the Cells of their Parents.
Reproduction…Mitosis…
The Cell Cycle can take less than ___ Hours or over Several ________.
24…Years…
What is Stage 1 of the Cell Cycle?
The Longest Stage. Cells Grow Bigger and Replicate their DNA to form Two Copies of each Chromosome, also Increase the number of Sub-Cellular Substances like Mitochondria, Ribosomes and Chloroplasts.
What is Stage 2 of the Cell Cycle?
Mitosis occurs.
What is Stage 3 of the Cell Cycle?
The Cytoplasm and the Cell Membranes divide to form Two Identical Daughter Cells.
What is Mitotic Cell Division important in?
The Growth, Repair and Development of Multicellular Organisms.
As Cells Divide, Grow and ________, they also begin to _______________.
Develop…Differentiate…
In the early Development of Animal and ______ Embryos, the Cells are _______________.
Plant…Unspecialised…
Sometimes, Adult _____ Cells replace Dead or Damaged Cells.
Stem.
In Plant Cells, ________ takes place throughout Life in the ___________ found in the Shoot and Root Tips.
Mitosis…Meristems…
Many Types of Plant Cells retain the Ability to ______________ throughout Life.
Differentiate.
Most Types of Animal _____ Differentiate at an Early ______ of Development.
Stage.
Producing Identical Offspring is known as ________.
Cloning.
An Egg and a ________ Cell fuse to form a _______ which is a Single New Cell.
Sperm…Zygote…
