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KiRa [710]
3 years ago
10

Compare the advantages and disadvantages of large and small nature reserves

Biology
2 answers:
faltersainse [42]3 years ago
7 0

The advantage of small and large reserves is that it only requires small labor and it can also serve a city and a town. The only disadvantage of the small and large reserves is that it is quite expensive despite of its usefulness.



Gnom [1K]3 years ago
5 0

The advantage of small and large reserves is that it only

requires small labor and it can also serve a city and a town. The only disadvantage

of the small and large reserves is that it is quite expensive despite of its

usefulness.

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Suppose a mutation affects an enzyme that is required to repair the damage to DNA caused by the loss of purine bases. This mutat
Vsevolod [243]

Answer: There's no way one species can become another through depuranization, which is a random change.

Explanation:

In cells, environmental (chemical or physical) and metabolic factors can cause DNA damage, which is the molecule that stores genetic material. In these cases, the damage done to the DNA is repaired.

<u>Many of these lesions cause a permanent structural damage to the DNA, which can alter the ability to be transcribed, or can cause mutated genes to be transcribed resulting in another protein.</u> Particularly, depurination is the hydrolytically cleavage of the β-N-glycosidic bond between the purines (adenosine or guanosine) and the carbon of the sugar group found in the DNA. This mutation results in the loss of the purine base and leads to the formation of apurinic site and results and severely disrupts the DNA structure. The most important causes of depurination is the presence of endogenous metabolites inside the cell as a result of various chemical reactions and due to the presence of mutagenic compounds. However, these apurinic sites <u>are usually repaired by portions of the base excision repair (BER) pathway</u>.

There's no way one species can become another through depuranization, which is a random change. Because it is highly unlikely that 5000 mutations are able to accumulate every day without being repaired, and that they are just the right mutations to have the same characteristics as a chimpanzee. <u>If the depurinations are not repaired, the cell will most likely either die or become cancerous.</u>

5 0
3 years ago
Which of the following will be the most similar?
Ivenika [448]

Answer:

a

Explanation:

Cells are the functional units of life, this means that all living organisms are made up of cells. In multicellular organisms, cells are organized into complex structures such as tissues, organs and systems. A tissue is made up of similar cells which have the similar function. An organ is made up of several tissues while a system is made up of related organs. Example of a tissue is blood which is made up of similar cells such as red blood cells and white blood cells.

4 0
3 years ago
Read 2 more answers
A swimmer can swim 1000 m in 360 seconds. What is her average speed?
Harman [31]

2.78 meters per second

7 0
3 years ago
In this ecosystem, pollution and human activities have caused a rapid decrease in the population of eagles. At the same time, a
seropon [69]

The question is incomplete as it does not have the attached figure and the options which are:

A.) The population of frogs will decrease because of increased predation by snakes.

B.) The population of storks will increase because of decreased competition with eagles.

C.) The population of gnats will decrease because of a decrease in the amount of grass available.

D.) The population of grass will decrease because of increased predation by rabbits.

E.) The population of snakes will increase because of decreased predation by eagles.

Answer:

Option-A and E

Explanation:

In the given question, a structure of a complex food web has been provided in which the organism present at the different trophic level are affected by different factors including-

1. The population of Eagles (top consumer) has decreased due to human activities. Since the number of eagles has declined therefore the number of organisms on which it feeds will increase (snakes in the given question) due to no predation.

2. The population of rabbits (primary consumer) has decreased due to a virus. Since the number of rabbits will decline therefore the snakes will now shift eat more frogs and therefore the number of frogs will decline.

Thus, the selected options are correct.

4 0
3 years ago
Some autoimmune diseases show a positive correlation with dramatically decreased expression of histone deacetylase (HDAC9, an en
soldier1979 [14.2K]

Answer:

The positive charge of the histone proteins get reduced due to the process of histone acetylation, thus making the wrapping of DNA around the histones less tightened. The loose connected DNA afterward associates with the transcription factors for the articulation of the genes situated in that area.  

Generally, when there is no requirement of gene anymore, the acetyl groups from the histones get withdrawn by the activity of histone deacetylase enzyme (HDAC9) that makes the DNA tightly wrapped and inaccessible again. In case, when less expression of histone deacetylase enzyme occurs, the process of deacetylation fails to take place. This indicates that within an immune cell, at the time of infection, the inflammatory gene, which was made available does not get re-wrapped firmly around the histones.  

6 0
3 years ago
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