Answer:
The correct answer is: d. progressive stabilisation of correct secondary structural intermediates, and unfolding of incorrect structures, until the final structure is attained.
Explanation:
- Protein folding is a sequential process and not a random one.
- It is necessary that a protein must fold in such a way that in the end it is able to attain the particular conformation which is required for its function.
- The folding of an amino acid sequence is a process that is thermodynamically favourable.
- This is because in a folded protein the hydrophobic amino acids escapes from interacting with water molecules and hence gets stabilised.
- A folded protein has lower energy and is more stable than a linear polypeptide chain.
- The folding of an amino acid linear chain into a protein takes place in the following way:
- The folding of the amino acid sequence begins during the process of translation of the mRNA (messenger Ribonucleic Acid) by Ribosome. (Co-translational folding)
- This is because initially the linear amino acid sequence forms a secondary structure (alpha helix, beta sheet) which is formed between the nearby amino acid residues.
- These structures form progressively and sequentially and each structure after formation is checked for its correct conformation before the next structure (tertiary structure) is formed.
- If an incorrect folding has occurred, the folded polypeptide chain opens up and refolds until correct orientation is attained.
- Folding, opening and refolding process continues until the correct conformation of the protein is attained.
Answer:
Observation and measurements recorded during an experiment. All the variables that are kept the same throughout the experiment so they will not affect the results of the experiment. independent Variable. The variable which the experimenter changes so that he/she can observe the results of the experiment.
Answer:
The answer to the following question is Golgi.
Explanation:
The Golgi Body or the Golgi Complex is also known as Golgi Apparatus which is the secretory pathway and they also utilized in this secretory process.
It is the dispatch station and the major collection of the protein products which receive from the ER (endoplasmic reticulum )
It is found in most of the cell and it is organelle found inside the Eukaryotic cell.
A receptor refers to a protein molecule, which attains chemical signals from external of a cell. The receptor proteins are categorized by their location. On the other hand, the structural proteins refer to the fibrous proteins. One of the essential activity of the structural protein is to maintain the configuration of the cell.
In the nerve cells, the receptor proteins pick up signals of pain and structural proteins helps in maintaining the shape and configuration of the nerve cell.
Answer:
The <em>three domain classification </em>of a living organisms has <em>separated </em>and placed bacteria and archaea in two different kingdoms.
Explanation:
It is because, despite both <em>being prokaryotes</em>, bacteria, as well as archea, exhibit the following <em>dissimilarities:</em>
- The <em>cell membrane</em> of bacteria has peptidoglycan, whereas it is absent in archaea.
- The <em>histone proteins </em>are present in archaea and absent in bacteria.
- The enzyme <em>RNA polymerase</em> is present in more numbers in archaea than bacteria.
