douhamalas
Tuesday, May 4, 2021
Tuesday, March 16, 2021
Cell division symmetry control and cancer stem cells
- Stem cells including cancer stem cells (CSC) divide symmetrically or asymmetrically.
- Symmetric cell division makes two daughter cells of the same fate.
- Asymmetric cell division (ACD) produces daughter cells of different fates.
- Stem cells are capable of long-term self-renewal.
- ACD of stem cells increases the diversity of cell types during development.
- cancer stem cells (CSC) suggests that there is a hierarchy in cancer cells.
Tuesday, February 23, 2021
World Wildlife Day
The main problems facing wildlife:
- The human activities such as mining, farming and construction.
- Cutting down too many trees.
- Clearing too much ground.
- Building so many roads.
- By all of this we are destroying the natural habitats of millions of species.
- Putting the world's biodiversity at risk.
- Nearly a quarter of all species are at risk of extinct.
Greta Thunberg
Greta Thunberg and George Monbiot on the climate crisis
- Our climate is breaking down.
- Nature is a tool to repair the broken climate.
- Spending money more on fossil fuel.
- Natural climate solutions get just 2 per cent.
- Up to 200 species are going extinct every single day.
- Protect - restore and fund the best way to help.
Saturday, February 13, 2021
Notes of environmental article
Saturday February 13 2021
Hundreds of fish species, including many that human eat, are consuming plastics.
A Biologist examines microplastics found in sea species at the Hellenic Centre for Marine Research in Greek November 26 2019
Notes:
1- Microplastics coming from surface to deep seas.
2- Human ingest synthetic particles while eating fish.
3- Researchers worried about the increase in fish consuming plastics and its effect.
4- Some oceans have plastics pollution.
5- Studying each fish species.
6- It’s global problem.
7- Increase of fish consuming plastics through decades.
Summary:
Ocean plastics pollution becomes global problems. Nanoparticles from plastics that fish were consumed move from their stomachs to their muscles tissue to human plates. One in four fish contain plastics. Scientists are worried about this dangerous situation because it’s increasing through four decades.
Personal Reflection:
1- People all over the world should receive education about this hazardous situation.
2- Governments should decrease the production of plastics and look other choices.
3- Fish that mostly consume plastics should not be served for humans unless tested.
Tuesday, February 2, 2021
Summary This is a summary on a report about 'Millennials in The Workplace'. Millennials are the one who born between the early 19...
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Greta Thunberg and George Monbiot on the climate crisis Our climate is breaking down. Nature is a tool to repair the broken climate. Spendi...
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journal article Cell division symmetry control and cancer stem cells Stem cells including cancer stem cells (CSC) divide symmetrically or ...