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The purpose of mitosis is to create two new perfectly identical cells when either there is a need to replace old or damaged cells and to reproduce asexually by making new cells. Some organisms use mitosis to replace body parts. For example starfish replace lost arms by mitosis. Some organisms such as the hydra use mitosis to produce genetically identical offspring.
There are four stages of mitosis: prophase, metaphase, anaphase and telophase.
1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres
2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell)
3) Anaphase: sister chromatids are pulled to opposite poles of the cell
4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin
● The order of the stages of mitosis can be remembered using the mnemonic PMAT.
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Answer:
For every 100ml of deoxygenated blood delivers approximately __4___ml of CO2 to the alveoli.
Your brain sends signals to your body to release hormones that make you tired. This is done as a routine, and trying to sleep at different times will mess it up.
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Answer:
the membrane that receives a signal from the presynaptic cell
Explanation:
Why is this only 3 stars its right.. the other answer is copied from g00gle
Answer:
The animal with only one ear is PRAYING MANTIS.
Explanation:
The praying mantis belongs the class insecta. Its body parts is divided into head, thorax, abdomen, legs and antennae. A praying mantis also has one ear, which is located on the center part of its chest. With the help of this one ear, the praying mantis is capable of hearing ultrasonic sounds that are above 20,000 Hertz.