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Wewaii [24]
3 years ago
13

Even though each body cell is an individual contains the same DNA, the function of muscle cells and liver cells are not the same

because?
Biology
2 answers:
kirza4 [7]3 years ago
6 0
Since biochemical function is determined largely by specific enzymes (proteins), different sets of genes must be turned on and off in the various cell types. This is how cells differentiate.
Elina [12.6K]3 years ago
5 0
The answer lies with what DNA is and how it works.

Since I’m assuming you know, all our DNA contains all of the information needed for making you. This information is stored in the over 20,000 human genes found in almost all our cells.

To get at the information, a gene must be turned on (expressed) and the information turned into something useful, a protein. Once made, that protein goes out into the cell and performs some set of specific tasks. For example, hemoglobin, a protein found in red blood cells, carries oxygen to cells and carbon dioxide away.

For a cell to work, 1000's of these proteins must be made, each doing its particular job. Our muscles and liver are so different because different sets of proteins are made in the various muscle and liver cells. In other words, in our muscles, genes are turned on for movement, but it also helps stabilize our joints, maintain our posture and generate heat during activity and the “detoxification" genes(liver cells) are off. In liver cells, the situation is reversed.

Genes are like Recipes for Proteins:-

Genes are recipes that provide instructions that make us who we are. They determine what we look like and help our body to grow and function properly.
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5 0
3 years ago
Read 2 more answers
For a particular species of wolf, 55% are female, 20% hunt in medium-sized packs, and 15% are both female and hunt in medium-siz
lorasvet [3.4K]
*Given
Percent of the wolves which are female - 55%
Percent of the wolves which hunt 
     in medium-sized packs                      - 20%
Percent of the wolves which are both
     female and hunt in medium-sized
     packs                                                  - 15%


*Solution

<u>Assuming that there is a total of one hundred wolves in the species, </u>

1. Since percent (%) means "per 100" or "for every 100" then, 

a. The number of female wolves is

    (55 female wolves / 100 wolves) * 100 wolves total = 55 female wolves

b. The number of wolves that hunt in medium-sized packs is

    (20 wolves / 100 wolves) * 100 wolves total = 20 wolves

    Note that the 20 wolves is a mixture of male and female wolves. 

c. The number of female wolves that hunt in medium-sized packs is

    (15 female wolves / 100 wolves) * 100 wolves total = 15 female wolves

2. Because there is a total of 55 female wolves in the species, and 15 of these wolves hunt in medium-sized packs, then the number of female wolves that do not hunt in medium-sized packs is, 
 
    55 female wolves total - 15 female wolves hunting  = 40 female wolves not
                                                in medium-sized packs         hunting in medium
                                                                                              sized packs

3. To find the proportion, we can express the answer in terms of percent (%) or in fraction, which is usually how proportions are expressed. 

For every 100 wolves, there are 40 female wolves that do not hunt in medium-sized packs. This can be expressed as a proportion of 
 
                                       <span> <u> 40  </u>
</span>                                        100

and simplified by dividing both the numerator and denominator by 10, we get,

                                     <span><u> 40/10  </u>
</span>                                     100/10

                                       <span><u>  4   </u>
</span>                                        10

When this is expressed in percent, we multiply the fraction or proportion by 100% to get, 

                                       <span><u>  4   </u>   x    100%     = 40%
</span>                                        10

Thus, the proportion of female wolves that do not hunt in medium sized packs is 4/10 or 0.4. When expressed as percent, this is 40%. 
  
5 0
3 years ago
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