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4 years ago

What is the purpose of stem cell research?

Biology

1 answer:

Anuta_ua [19.1K]4 years ago

8 0

Answer:

Stem cells may be defined as the potipotent cells that has the ability to differentiate into different cells. The stem cells are now used in research as well.

The main purpose of the stem cells are as follows:

The damaged tissue or organ can be replaced by growing stem cells in the laboratory.

The genetic defects can be corrected by the stem cells discovery.

The new drugs can be tested on the stem cell.

The reason of the development of specific cancer cells.

You might be interested in

Explain how the shape of a river's stream bed can affect the river's speed and its power to cause erosion.

sergey [27]

Explanation: The shape of a river's stream bed affects the speed and eroding power of a river by influencing the amount of friction between the water flowing through the river and the stream bed below. Friction is the force that opposes the motion of one surface as it moves across another surface. In a river, there is friction between the flowing water and the stream bed beneath it. Where a river is deep, less water comes into contact with the stream bed, so there is less friction. The reduced friction means there is less opposition to the water's motion, so the river flows at a greater speed and has more kinetic energy for erosion. On the other hand, where a river is shallow, more water comes into contact with the stream bed, so there is more friction. The increased friction means there is more opposition to the water's motion, so the river flows at a lesser speed and has less kinetic energy for erosion. Also, the roughness of a stream bed covered with boulders and other obstacles causes the water to flow through the river in a turbulent fashion. This could cause the river to move slower in some cases or erode more in other cases.

*mark as Brainliest ty*

3 0

3 years ago

A ________ is defined as a single, brief contraction period and then relaxation period of a skeletal muscle in response to a sin

faust18 [17]

A twitch is defined as a single, brief contraction period and then relaxation period of a skeletal muscle in response to a single stimulation. Contraction period involves receptive power strokes that pull the thin filaments past the thick filaments shortening sacromeres and muscle tension increases as the sacromeres shorten. Relaxation period begins with or release of cross bridges resulting from the return of Ca2+ back to sarcoplasmic reticulum. The strength of skeletal muscle contractions can be broadly separated into twitch, summation, and tetanus. A twitch is a single contraction and relaxation cycle produced by an action potential within the muscle fiber itself.

3 0

3 years ago

following clear-cutting of a broadleaf forest several hundred years ago, the land was colonized by herbaceous species that were

masya89 [10]

The question is incomplete as it lacks the options which are:

A) primary succession; facilitation

B) primary succession; inhibition

C) primary succession; toleration

D) secondary succession; facilitation

E) secondary succession; inhibition

Answer:

The correct answer will be- secondary succession; facilitation

Explanation:

Secondary succession is the series of changes in the community which takes place on the disturbed or damaged land but previously colonized.

The succession takes place in one of the three ways: Facilitation, inhibition and tolerance model.

Facilitation model of succession occurs when the pioneer species growing in an area modifies the area and make it suitable for survival for themselves and other invading species.

The primary species are replaced by the competitive species which are replaced by another competitive species. Thus, the growing species facilitates the growth of the other species.

In the given question, since the herbs are replaced by the shrubs and then the forests on the disturbed land, therefore, secondary succession; facilitation is the correct answer.

4 0

4 years ago

Describe the impact of crabs going extinct in this ecosystem. Who will be the most positively affected?

svetoff [14.1K]

Answer:

the prey of crabs would be positively affected, and the predators of crabs would take a negative effect to the extinction of crabs

Explanation:

small clams, starfish, snails, worms, squid, mussels, shrimp and small fish would all be positively affected if crabs were to go extinct, because all that is listed are part of a crabs diet, for both large and small crabs. the ones which would be negatively affected would be the predators of crabs, such as cobia, eels, striped bass, jellyfish, red drum, American eels, sharks, dogfish, sea rays, and smaller fish. they would take a negative affect to the extinction of crabs because as said before, these are all predators of crabs, so the extinction would remove them from their diet, forcing them to find other sources for food

8 0

2 years ago

Rob is a 15-year-old boy who has been repeatedly arrested for theft and assault. In addition to shoplifting and other theft, he

miskamm [114]

Answer:

Conduct disorder

Explanation:

Conduct disorder is referred to as a behavioral disorder or sometimes referred to as a mental disorder in which children or adolescents exhibit a persistent and repeated behavioral pattern in which basic rules and rights of individuals are violated. Individuals with this behavioral disorder are most times not remorseful about their actions and they exhibit aggressive and destructive tendencies.

There is really no known cause for conduct disorders except for the fact that several factors like biological, physiological and social factors might be associated to it. It can be managed by behavioral and cognitive therapy.

Therefore, Rob's current diagnosis is most likely conduct disorder.

3 0

4 years ago