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.
Answer:
This question is incomplete. Here are the missing options:
- apprentice in training
- social mediation
- <u>scaffolding
</u>
- zone of proximal development
The answer is scaffolding.
Explanation:
Scaffolding is a term that refers to a student-centered approach in which the instructor constatly assesses the learner's progress. A key element of scaffolding is that each student requires a different type of support.
Scaffolding usually employs guides or direct instructions before engaging the learners in relevant tasks. The aim is that students become autonomous.
The correct answer is the physical environment
There are several factors that contribute to change and innovation in a society: factors internal to the society itself or external factors of the environment that surrounds it. Nowadays, the extreme importance of the relationship between society and its environment has become very clear. The environment is not only a crucial source for the maintenance of society with its climatic and geographic characteristics in general, its natural wealth, its sources of energy, its flora and fauna, all functioning as a set of conditions in relation to which the society must adapt. In this process, society can interact with its environment in different ways and directions: either contributing to improve or to worsen and impair its living conditions. Changes in the environment end up forcing changes in society. Societies, throughout history, have needed to adjust to changes in the environment. This is an unquestionable adaptation process.
The environment to which a society must adapt also includes other societies with which it maintains contact. A major change in one tends to trigger a chain process with consequences for the others and forcing adjustments and innovations.
But there are other sources of change. The dynamics of forces within societies, which are part of the human condition itself, prevent society from remaining permanently stable. First, in the transmission of cultural heritage from one generation to another, changes of various types occur. As we saw earlier, individuals are not passive in forming habits, learning customs and receiving information as they grow and develop. Human beings are apparently, by their very nature, motivated to try new patterns of action. Motivation is often the simple curiosity that can be intensified by the cultural world. Or, the motivation may be simple material self-interest. Men seek to maximize their rewards, that is, to earn more and better as a result of their actions. In this way, experimentation and innovations are inevitable.
Answer:
So basically it present information about the world in a simple way
present information about the world in a simple, visual way. They teach about the world by showing sizes and shapes of countries, locations of features, and distances between places. Maps can show distributions of things over Earth, such as settlement patterns
Explanation:
Learning to visualize and interpret data. It is no longer just data and numbers, but instead something they can interact with and utilize
El poder tomar decisiones implica independencia de lo externo y autoridad y control sobre lo interno, esto es la Soberanía nacional y la identidad son todos los elementos que conforman y le dan vida a la misma. El tratado de la Soberanía implica…
