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labwork [276]
3 years ago
14

What is the theory of natural selection, and why does it occur in an organism? Give an example.

Biology
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

It occurs in organisms because an organism with a beneficial trait/mutation have a higher chnace of surviving compared to organisms that do not. So the organsims that do survive pass on their genes to the next generation, and the bext generation will pass on those genes to the generation after and so on. But all the organisms that do not possess a beneficial trait/mutations will not survive, therefore they cannot reproduce and pass on those genes to their offspring. This means that most of the population will posses that trait/mutation.

Example: Spotted moths camouflage with bark so they are seen by predators and eaten. Black moths are easily seen by predators and are eaten. Spotted moths then pass on their genes to the next generation of moths.

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Name the chemical that helps in providing the ideal pH for pancreatic amylase to function in the human body.*​
Sonbull [250]

Answer:

What is the chemical that helps in providing the ideal PH for pancreatic amylase to function in the human body?

Explanation:

This allows the protein lipase to break down and digest the fat in the small intestine much more quickly. The pancreas secretes bicarbonate to neutralize the acidity of chyme and pancreatic amylase to aid in the digestion of carbohydrates.

6 0
2 years ago
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3 0
3 years ago
How do animal cells, Plant cells, freshwater protists, and
Romashka [77]

Answer:

Plant cells deal with osmosis by being enclosed in a cell wall.

Animal cells use active transport systems to deal with the problem of osmosis.

Fresh water protists have contractile vacuoles to deal with osmosis.

Many bacteria have cell wall to protect them from osmosis.

Explanation:

Plant cells have a rigid cell wall. If a plant cell is places in a place where the conditions are hypotonic, then the cell will tale up water by osmosis but the cell wall will prevent it from bursting. This condition is termed as the cell being 'turgid'.

As animal cells do not have the rigid cell wall, they use the mechanism of active transport system to stop the cell from bursting during osmosis. In this process, ions are moved out of the cell so that the pressure in the cell due to osmosis can be reduced.

Fresh water protists have a structure present in them called as the contractile vacuole. The contractile vacuole has the capability to remove any excess water from the cell as well storing water if there is not enough water.

Bacteria have peptidoglycan cell walls to prevent osmosis.

6 0
3 years ago
The Colorado plateau is an example of what mountains
Tems11 [23]
I believe the Southern Rocky Mountains such as the San Juan Mountains in Colorado and the La Sal Mountains in Utah.
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3 years ago
In which state did three of the strongest earthquakes in the United States occur?
algol13
New York because this state always get earthquakes for both reason.
3 0
3 years ago
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