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Why do the cells of an adult continue to divide after the adult has stopped growing?
Cells continue to divide in adults for tissue repair, maintenance, and renewal. This allows the body to replace damaged or old cells to maintain proper function and heal injuries. It also helps in preventing diseases and maintaining overall health.
What is the importance of meiosis in sexually reproductive organism?
Meiosis is still important for the regrowth of cells in a sexually reproductive organism. For example even thought humans reproduce sexually they still have skin cells, like hair, finger nails, and even normal skin that produces new cells by meiosis.
How does the mitotic cell division relate to the cell cycle?
It still needs cells to form the organism. If cells aren't present, tissues won't be formed organs won't form to make organ systems and make organisms. THE CELL CYCLE cells-->tissues -->organs-->organ system-->organism
How do cancer cells grow and divide?
Cancer cells divide excessively and invade other tissues. They do not have density dependence or anchorage dependence. Simply put, regular cells grow in an even layer while cancer cells grow tightly and on top of each other - an unnatural mass.
Why are rapidly growing cancers that originate in nervous tissue most likely composed of neuroglial cells rather than neurons?
Neurones don't differentiate (divide). You'll have the same neurones when you die as you had when you were born (with a few exceptions). Glia can be created from immature cells called NGF2 expressing cells. This is why cancer affects glia; cancer starts when cell division goes wrong. Neurones don't divide so they don't get cancer (other than in very young children when new neurones are still produced), whereas NGF2 cells do, so they can become cancerous.
Is the wolf spiders cells unicellular or multicellular?
Behold spiders: The Only Unicellular yet still Multicellular species on earth. =O
Why do adults still need protein even though they have stopped growing?
To replace cells lost in the body and to improve the lining of the intestine (after all, 300 million cells die per minute!)
Why is it dangerous to X-ray a human fetus?
A human fetus is still early in the stages of development and if hit with X-rays can cause damage or defects in the fetus' body. The radiation could cause many problems within individual cells, including the damaging of receptor proteins which could cause cancerous tumors to grow. A human fetus, or any other fetus, is more susceptible to radiation damage because many of their cells are still stem cells (cells that can continue to divide endlessly and haven't been defined as a certain cell). In other words these cells aren't specified yet, they could become skin cells or stomach cells so radiation could mutate them and since they can divide easily the defect could easily spread.
How do you know if a mountains still growing?
yes mountains are still growing. like mount Everest.
Should males at the age of 16 still expirience growing pains?
Males who are only 16 of age can still experience growing pains because they're still growing.
Why do mutations make organisms different from one another?
All the cells in a body have a specific function and purpose and have all developed themselves to be the best they can for that purpose (for example, muscle cells will need to move a lot and so they need a lot of ATP (energy) from the mitochondria whereas a cell somewhere else might need less mitochondria and more ribosomes to make proteins for growth). If there is a mutation in one of these cells it means that the cells function is no longer specific to what it was before, as the mutated cell replicates there are more and more copies of the mutated cells all serving a different function to the original one which makes them different to the organism with the original cells. (Thats just the changing of cells in one organism that could then be passed onto an organism of the same species - bt would still be differen). If the DNA mutates it will change the way all the bases on the DNA fit together - because DNA is what makes something what it is, a mutation here will cause the organism to change. This organism will then breed more and the genes will be passed by meiosis onto the daughter cells of the organism.
Do non living things have cells?
Well technically, no. Not real cells. But some examples of non-living things with "cells" could be jail (a jail cell) or an excel spreadsheet. I hope this helps!
