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Ilya [14]
2 years ago
5

What are stem cells and how may they be used

Biology
2 answers:
mojhsa [17]2 years ago
5 0

Answer:

cells from which all other cells with specialized functions are generated.

Explanation:

they may be used by dividing into two or more cells called the daughter cells

o-na [289]2 years ago
4 0
Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells.
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Explain how chromosome behavior during meiosis ensures transfer of parental traits to offspring
gizmo_the_mogwai [7]

Explanation:

During meiosis, sister chromosomes of a homologous pair separate into different cells during gamete formation . This mainly occurs in Metaphase I of meiosis where the homologous chromosomes line up the metaphase plate in their sets. Each chromosomes of a pair are then pulled to different poles of the cells separating them. Each of these chromosomes carries a set of alleles of a gene. Each cell/gamete, therefore, carried half the set of alleles of all genes compared to autosomal cells. There many combinations of these sets that can occur depending on the number of chromosomes the organism has.

These cells when combined with that of another parent during fertilization, form a zygote that grows and develops into a mature organism. The offspring will bear the characteristics of both parents because it inherits half a set of chromosomes from both parents.

Learn More:

For more on meiosis check out;

brainly.com/question/11701550

brainly.com/question/1271878

#LearnWithBrainly

6 0
3 years ago
Read 2 more answers
Which statement describes the relationship between the deer and plants on the food web? Tree is consumed by insect, which is con
True [87]

Answer: A.  Autotrophs supply food for the heterotrophs.

Explanation: A deer is a heterotroph and a plant is a autotroph. Examples of heterotrophs are animals and humans, and examples of autotrophs would be plants and algae. Therefore, because a deer consumes plants that means that autotrophs supply food for the heterotrophs. And by the way I did the exam myself and got this answer correct!

8 0
3 years ago
Consider the following hypothetical population and compute the statistical measures below: #births = 50,000; #deaths = 10,000; #
777dan777 [17]

Answer:

The birth rate refers to an average number of births in one year per thousand individuals in the population at mid-year.  

BR = (total birth in an annum / total population in mid year) * 1000

BR = (50000 / 1000000) * 1000 = 50

Death rate refers to an average number of death in an annum per thousand individuals in a population at mid year. Thus,  

DR = (total death / total population in mid year) * 1000

DR = (10000 / 1000000) * 1000 = 10

Annual population growth rate or APGR is calculated as:  

APGR = (Birth rate - Death rate) / Death rate

APGR = (50 - 10) / 10 = 4.0 %

Doubling time is the whole sum time needed for a population to get double in size. It is calculated as DT = ln (2) / growth rate

70 / 4.0 = 17.5 years

Thus, population will get double in 17.5 years.  

Adjusted (true) growth rate is equal to APGR + (NMR / Death rate)

And NMR = [(immigrants -emigrants) / total population] * 1000

NMR = [(5000 - 20000) / 1000000] * 1000 = -15

Thus, Adjusted (True) growth rate = 4.0 + (-15 /10) = -6%

The adjusted (true) doubling time = ln (2) / Adjusted growth rate  

= 70 / -6 = -11.66

This negative sign shows that it will never get double in such situation.  

5 0
3 years ago
How do the nervous system and endocrine system work together​
viktelen [127]

Answer:

the endocrine system and the nervous system are the two major regulating and communicating systems of the body. During rest and exercise, the nervous system along with endocrine system  regulate the body mechanism to initiate the maintenance of Homeostasis in the body.

both endocrine and nervous system are both together  involved in the transmission of chemicals signals which are important for physiological processes in the body . The difference is that endocrine system uses Hormones while nervous system uses neurotransmitters for chemical signalling.

The main area of the brain where these system work together and perform their function collectively is Hypothalamus where they signal each other when they receive proper stimulus.

6 0
3 years ago
Proteins are needed for?<br><br> -biology ( food and digestion )
muminat

Answer:

Your body needs protein to stay healthy and work the way it should. More than 10,000 types are found in everything from your organs to your muscles and tissues to your bones, skin, and hair. Protein is also a critical part of the processes that fuel your energy and carry oxygen throughout your body in your blood.

Explanation:

7 0
2 years ago
Read 2 more answers
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