1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mumz [18]
3 years ago
11

Several students have been practicing drawing their models of nucleotides. Whose model do you think is most consistent with the

actual chemical structure of nucleotides

Social Studies
2 answers:
RSB [31]3 years ago
7 0

The first description of the DNA (deoxyribonucleic acid)chain was done by Watson and Crick in 1953, the nucleotides that constitute the DNA are four: cytosine (C), guanine (G), timine (T) and adenine (A). When doing a model is essential to remember that cytosine ONLY joins guanine and timine only link adenine, this is due to the size and chemical properties of each molecule. Later, another related and similar and molecule was discovered, the ribonucleic acid or RNA, which also is constructed by nucleotides.

In both cases, the nucleotides are compound of 3 main components: a nitrogen base, a pentose and a phosphate. When the molecule lacks the phosphate group, is called nucleoside. Depending on the chain ( DNA or RNA) the nitrogen base derives from purine (adenine and guanine) or pyrimidine (cytosine or timine) just in the RNA instead of timine is uracil (U)

The union is established between adjacent molecules through the phosphate, while among each other through the nitrogen base-remember C=G and T or U=A. The core of each molecule is the pentose. Therefore the best representation of the molecule is attached


References

Watson, J. D., & Crick, F. H. (1953, January). The structure of DNA. In Cold Spring Harbor symposia on quantitative biology (Vol. 18, pp. 123-131). Cold Spring Harbor Laboratory Press.




NISA [10]3 years ago
4 0

It would be the Markov models of DNA sequence. Markov model is the most consistent with the actual chemical structure of nucleotides where it also becomes the most-used model.  

EXPLANATION:  

Here is the matrix of nucleotides structure model by Markov:

 

Beside Markov, there are other models of chemical structure of nucleotides proposed by other scientists.

1. JC69 model (Jukes and Cantor 1969)

2. K80 model (Kimura 1980)

3. F81 model (Felsenstein 1981)

4. HKY85 model (Hasegawa, Kishino and Yano 1985)

5. T92 model (Tamura 1992)

LEARN MORE:  

If you’re interested in learning more about this topic, we recommend you to also take a look at the following questions:

1. Which of the following would a chemist be most likely to study?  brainly.com/question/856697  

KEYWORDS: structure of nucleotides, what is the structure of nucleotides, nucleotides  

Subject: Social studies

Class: 10-12

Sub-chapter: Structure of nucleotides  

Download docx
You might be interested in
"You are installing a new printer in the network. When you check the print server properties, it displays the following error: S
ahrayia [7]

Answer:

Below you will find the instructions to fix the error: Server properties can't be viewed. The printer spooler service is not running.

Explanation:

Press “Window key” + “R” to open the Run dialog

Type “services.msc“

Select “OK“.

Double-click the “Printer Spooler” service

Change the startup type to “Automatic“

Select “OK“.

Restart the computer and reinstall the printer.

Hope this helps!

3 0
3 years ago
Max weber referred to the self-denying approach to life characterized by people living frugal lives and saving their money as th
Simora [160]
<span>Protestant Ethic.
    Max Weber held that the Protestant ethic was an essential factor in the monetary accomplishment of Protestant gatherings in the beginning periods of European private enterprise; on the grounds that common achievement could be deciphered as an indication of everlasting salvation, it was vivaciously sought after</span><span />
7 0
3 years ago
An important insight of international trade theory is that when contries exchange
konstantin123 [22]
A significant understanding of international trade theory is that when countries interchange goods and services one with the other, it is usually beneficial to both countries. In relation to international economics, if there are huge differences in wage levels among countries then trade is probable to be harmful to neither country. The cost and benefit analysis of international trade emphases consideration on engagements of interest in countries. Since the end of world war II, the interpretation contained by the advances democracies regarding the quantity of trade has lately been interrogated by a largely political movement collected of traditional nationalists and new ideologues.
3 0
3 years ago
Francisco, a fifth grader, shows industriousness when he __________. Group of answer choices
valentinak56 [21]

Answer:

a)

Explanation:

Erik Erikson develop a theory about our psychosocial development, in which he stated that we go through different crisis along our lifespan. These crisis have the characteristic to have two opposite "values" and that we, as individuals, tend to resolve the crisis by adjusting ourselves more to one of the values.  It is important to notice that Erikson crisis go through different stages.

One of the stages in this theory is call "industry vs. inferiority" and it takes place between the age of 6 and 12 years approximately.

At this stage the child’s peer group will gain greater significance and will become a major source of the child’s self-esteem. The child now feels the need to win approval by demonstrating specific competencies that are valued by society and begin to develop a sense of pride in their accomplishments (industriousness).

Children feel specially industrious when they are encouraged and reinforced for their initiative and feel confident in their ability to achieve goals.

If they are not encouraged or this initiative is not reinforced they might develop a sense of inferiority.

In this example, Francisco, a fifth-grader (and probably 11 years old) shows industriousness when a) designs a robot and enters a competition with it

<u>Since this is the only option that has to do with demonstrating specific competencies that are valued by society and thus, this feels like an accomplishment, this is the correct answer.</u>

<u />

5 0
3 years ago
Describe Washington's actions leading up to and during the Patriot victory at Yorktown
marissa [1.9K]
A few ways to describe George Washington actions leading up to the patriots victory at Yorktown was...George was a great general for the patriots because he never gave up when times were rough time for the army that's what lead them success to beating the British army aka red coats
8 0
3 years ago
Read 2 more answers
Other questions:
  • A. Why is iran considered a oil-rich country? B. Why is Lebanon considered a oil-poor country?
    5·1 answer
  • How does Mrs.van daan embarrass peter​
    12·2 answers
  • Why are some organisms called producers?
    11·2 answers
  • An important example of land modification in Southeast Asia is the creation of _____, because they produce product that is used
    12·2 answers
  • Question 6 of 10
    5·1 answer
  • According to the rationality assumption, people
    12·1 answer
  • An example of psychological noise is ____________. a. insecurity b. fatigue c. illness d. loud music
    5·1 answer
  • Which organization limited the amount of weapons created for war in Europe?
    7·1 answer
  • Imogen is part of a group that rejects all conventional beliefs in society and religion. The group promotes vegetarianism, celib
    13·2 answers
  • Kevin has thoroughly researched whether artificial intelligence can have free will. in order to continue his philosophical inqui
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!