Answer:
Three types of population distribution:
Clumped.
Random.
Uniform.
Explanation:
1. Clumped:
This is the most common pattern of population dispersion.
organisms are clustered together in a group.
This may reflect the patchy distribution of resources in the environment.
2. Random:
This is a typical distribution where individuals do not interact strongly.
The organism has unpredictable distribution.
3. Uniform:
This is the typical environment where individuals compete with each other for scarce resources like water in the desert.
organisms are evenly spaced over the area they occupied.
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Duodenum is indicated structures contains the glands which secrete an alkaline mucus that helps to neutralize the acidic chyme
The duodenum is first part of the small intestine. The main role of the duodenum is to complete the first phase of the digestion. In this section of the intestine, the food from the stomach is mixed with enzymes from the pancreas and bile from gallbladder.
It may be subdivided into four sections: the superior part, is descending part, is horizontal part and is ascending part. The superior part (first part, D1) lies in intraperitoneally and is also enlarged proximally (duodenal bulb
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Energy. The other 90% is lost as heat. This is the second law of thermodynamics.
In baby food protease brakes down the proteins and is used to pre-digest proteins during the manufacture of baby foods.
I learnt this last week!
Hope this helps! :)
Despite the fact that their numerous abnormalities would ordinarily make them great targets for apoptosis, cancer cells even avoid programmed cell death. As cancer progresses, cells cross the borders of healthy tissue and metastasis (spread) to other locations throughout the body.
Cancer cells:
- First and foremost, cancer is a complex illness, meaning that several faulty genes are implicated. It is not the case that one faulty gene causes a cell to develop into a malignant cell.
- Metastasis refers to the spread of a cancer.
- Uncontrolled growth is a given if there is a constitutively active RTK growth factor. However, the cell has additional defense systems to prevent such unchecked proliferation. If nothing is done, the cell will undergo apoptosis and perish. The development of cancer would not exist.
Some of the typical characteristics of cancer cells include -
- Because they are anchorage independent, cancer cells can grow in both semi-solid and suspension mediums.
- Its proliferation is unaffected by contact with neighboring cells, or contact inhibition.
- Layers of cancerous cells are formed.
- Cancerous cells have a variety of shapes.
- Telomerase is expressed by tumor cells.
- They do not go through apoptosis, have damaged cell cycle regulatory genes, and proliferate uncontrollably.
- For them to grow, angiogenesis is necessary.
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