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rodikova [14]
3 years ago
10

30 POINTS HELP ASAP! WRITE IN YOUR OWN WORDS!!! I WILL MARK BRAINLIEST HELP PLEASE ITS DUE TODAY AND I REALLY NEED TO GET IT DON

E THANK YOU!
Write a paragraph of at least three sentences about stem cells. The paragraph should include what stem cells are, the controversy around them, and your opinion about using them for research.
Biology
1 answer:
Elis [28]3 years ago
7 0

Answer:

Stem cells are cells in the human body that have the ability to develop into many other body cell types. Stem cells are very useful for drug development, research, they aren't likely to be rejected in transplants, and are used to repair damaged or diseased cells and tissues. However, they cannot be grown for long periods of time, there are very small numbers in each tissue and cell making them very hard to find, and for certain studies they have been shown to cause cancer. To be honest, using them in research does have its pros and cons, they are very useful and easier to use in research, plus they can help repair damaged and diseased cell tissues. But at the same time they can be difficult to use correctly and properly, it can cause serious health problems if cancer doesn't take place. I think that using them in research is okay, as long as they are used correctly and properly.

Hope this helps! :)

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The threshold element in every sexual harassment case is
Hoochie [10]
For the answer to the question above, I believe that the answer to your question is "that the victim was subjected to harassment based on a protected class characteristic" regarding the <span>threshold element in every sexual harassment case.

I hope my answer helped you</span>
7 0
3 years ago
if we use a cscl gradient to test the density of various nucleic acids, both rna and dna-rna hybrids are more density than just
Wewaii [24]

RNA and DNA-RNA hybrids are more dense than simply DNA if the density of different nucleic acids is tested using a CsCl gradient.

The primary technique employed in molecular biology is the extraction of DNA, RNA, and protein. Scientists can separate materials according to size, shape, and density by using density gradient centrifugation. Isopycnic centrifugation, a sort of density gradient centrifugation that Meselson and Stahl developed, employed a cesium chloride solution to separate DNA molecules solely on the basis of density. Because DNA has hydrogen bonds between its strands, which makes it less dense than RNA, RNA has a far larger density than DNA. RNA can be obtained at the test tube's bottom using a CsCl density gradient and high centrifugation, whereas DNA can be recovered in the middle layer.

To learn more about nucleic acids click here brainly.com/question/11309892

#SPJ4

6 0
1 year ago
On average, each American produces 4 pounds of trash each day (1,460 pounds of trash each year). To contain this trash, landfill
Agata [3.3K]

Answer:

Prob D

Explanation:

7 0
3 years ago
Read 2 more answers
The activation of beta2 receptors in the bronchi causes bronchodilation (an increase in diameter of the bronchi), making it easi
UNO [17]

Answer:

The correct answer is (b) epinephrine.

Explanation:

Epinephrine, also known as <em>Adrenaline</em>, is a hormone secreted by the medulla of the adrenal glands.

In medicine, epinephrine is used as a stimulant in cardiac arrest, as a vasoconstrictor in shock and as a bronchodilator and antispasmodic in bronchial asthma.

When epinephrine is inhaled in small doses, it causes short-term relief from the symptoms by widening the bronchial tubes allowing air to pass through.

I hope it helps!

8 0
3 years ago
The mitotic spindle consists of two types of microtubules: kinetochore microtubules and nonkinetochore microtubules. In animal c
Blababa [14]

Answer:

The correct answer will be

1. Lengthen

2. Lengthen, shortens

3. Disassemble

Explanation:

There are three types of microtubules present during cell division: kinetochore, aster and polar microtubules.  

1. During prophase: all types of microtubules grow out at their positive(+) ends which functions to pull and push the sister chromatids apart towards opposite poles so they lengthen.

2. During anaphase : non-kinetochore microtubules- polar microtubules polymerization takes place at their (+) ends which causes the spindle fibres to move apart  while kinetochore microtubules which have been attached to the kinetochores of chromosomes shorten at their (+) ends and  motor proteins travel to (-) end because of which sister chromatids move towards the spindle poles.

3. During telophase: non-kinetochore microtubules depolymerize or disassembles.

Thus, 1. Lengthen, 2. Lengthen, shortens and 3. Disassemble are the correct options.

7 0
3 years ago
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