B2 - Cell Division Flashcards
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…
When a Zygote divides and forms a Hollow Ball of Cells, it is called an?
Embryo.
Embryonic Stem Cells (from Human _________) and Adult Stem Cells (from Adult Bone _______) can be Cloned and made to Differentiate into many different Types of ______.
Embryos…Marrow…Cells…
Treatment with _____ Cells may be able to help ___________ such as Paralysis and Diabetes.
Stem…Conditions…
Stem Cells from Plant ___________ are used to produce new Plant ________ Quickly and Economically for research.
Meristems…Clones…
Many Embryonic _____ Cells come from aborted _________.
Stem…Embryos…
Embryonic Stem Cells ________ and _____ Rapidly.
Divide…Grow…
Treatment with Stem Cells, from Embryos or ______ Cloning, may be able to help with ____________ such as Diabetes.
Adult…Conditions…
What is the Area of Stem Cell Research called?
Therapeutic Cloning.
What does Therapeutic Cloning involve?
It involves using Cells from an Adult to produce a Cloned early Embryo of themselves.
In the UK, Stem Cell Research is being carried out into Potential Therapies to Treat which Five Things?
Spinal Cord, Diabetes, Heart Damage, Eyesight and Damaged Bones.
The use of Stem ______ has some Potential _______ and some People have ___________ or Religious Objections.
Cells…Risks…Ethnical…
In Therapeutic ________, an _______ is Produced with the same Genes as the Patient so the _____ Cells Produced are not Rejected and may be used for Medical ___________.
Cloning…Embryo…Stem…Treatment…
