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nlexa [21]
3 years ago
6

Define stem cells and explain their importance.

Biology
1 answer:
V125BC [204]3 years ago
6 0

Answer:

A stem cell is a cell with the unique ability to develop into specialised cell types in the body.

Stem cells are important for living organisms for many reasons. ... In some adult tissues, such as bone marrow, muscle, and brain, discrete populations of adult stem cells generate replacements for cells that are lost through normal wear and tear, injury, or disease.

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differentiate between Acute and chronic diseases ...(minimum 5 points each)......pls help fast ....i have my exam tomorrow
Viefleur [7K]
Acute diseases are sudden, severe, and short term only. They quickly appear and worsen without warning and they disappear. Examples of this are flu or colds.  

Chronic diseases, on the other hand, are long-developing diseases. The symptoms have been present for long time and it worsens as time progresses. Examples of this are Osteoporosis and heart disease.
3 0
3 years ago
Which of these would be considered a transgenic organism? a human treated with insulin produced by E. coli bacteria a rat with r
MA_775_DIABLO [31]

Answer:

a rat with rabbit hemoglobin genes

Explanation:

When the genome of an organism is modified in the field of genetic engineering,by transplanting the gene(DNA) from one organisms to another,(by vectors) or alteration of the gene components,the resulting organism produced or formed is called Transgenic organism.

This process of genetic engineering makes use of recombination of genes to alter the genome of the transgenic organism.

Thus by transferring to  rat ( the DNA for Hb) as the  rabbit Hb,the gene( or genome) for producing Hb in tats has been modified by that of rabbit.Hence Rat is said to transgenic.

Besides animals crop plants are also genetically modified.Thus the genome of some crops are altered to resist herbicides and pesticides. Some species of rice (golden rice)have been  modified to  add certain  vitamins to improve the nutritional values.

Genetically modified bananas as edible vaccines are another example

3 0
3 years ago
A red blood cell placed in distilled water will swell and burst due to the movement of Your answer: A.salt from the distilled wa
Dmitry [639]

Answer:

B

Explanation:

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7 0
3 years ago
The ATP molecule can be considered a form of chemical energy because?
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Answer: The correct answer is A) It stores the energy from the glucose in the bonds between the phosphate groups.

ATP ( adenosine triphosphate) is considered as a form of chemical energy as the energy is stored in the high energy phosphoanhydride bonds, which are present between phosphate.

Whenever a body requires energy, glucose is metabolized and produces ATP. The energy from glucose molecule is stored in the ATP.

When ATP is hydrolyzed, it is converted into ADP ( adenosine diphosphate) and inorganic phosphate and the large amount of energy is released.

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3 years ago
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Why doesn't the North Pole have frost action?
sergij07 [2.7K]
There's no land at the North Pole Instead it's all ice that's floating on top of the Arctic Ocean. ... Multi-year ice is thicker and has survived at least one melt season, whereas first-year ice is much thinner. Arctic sea ice usually reaches its minimum around mid-September each year.
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3 years ago
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