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mariarad [96]
3 years ago
11

Denumirea pasarilor calatoare

Biology
1 answer:
Fofino [41]3 years ago
6 0
<span>randunelele și wildfowls</span>
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Proteins that are functionally less important for the survival of an organism generally evolve _____ more important proteins.
Reika [66]

Proteins that are functionally less important for the survival of an organism generally evolve faster than more important proteins.

Proteins serve as the building blocks for all of life's essential processes. The proteins evolve along with the genes that create them, adding new functionality or features that may potentially result in the development of new species.

The mutation of amino acid-coding nucleotides and the stabilization of novel variations in the population are the two phases required for protein evolution.

The stability of a protein's folded structure, how well it prevents aggregation, and how well it is chaperoned all affect how quickly it evolves. According to the studies, the degree of a protein's expression has a greater influence on its evolutionary rate than does the protein's functional significance.

To learn more about protein and mutation here,

brainly.com/question/16238140

#SPJ4

7 0
1 year ago
The chemical mechanisms used to avoid errors in protein synthesis are different from those used during DNA replication. DNA poly
Savatey [412]

Answer:

(C) Aminoacyl-tRNA synthetases have an additional active site that binds to non-cognate tRNAs. The tRNAs that bind to this second active are hydrolyzed and released from the enzyme.

Explanation:

In case of translation, proof reading is done by aminoacyl-tRNA synthetases only. Aminoacyl-tRNA synthetases have two mechanisms to avoid error during translation which are mentioned as under:

<u>(1) Chemical proof reading:</u> Incorrect amino acids rather than being hydrolyzed in catalytic pocket get hydrolyzed in editing pocket and thus they hardly get attached to tRNA.  

For example: For distinguishing similar amino acids like isoleucine and valine, isoleucyl-tRNA synthetase uses a second active site which is meant for only valine not for isoleucine. In this particular site, valine which had entered the enzyme is cleaved away with the help of editing reaction after which the enzyme is well prepared to process isoleucine which is the correct amino acid for this enzyme.

<u>(2) Kinetic proof reading: </u>Even if an incorrect amino acid has entered a particular aminoacyl-tRNA synthetase, it does not cause appropriate conformational change in the enzyme because of which the incorrect amino acid loosens from the enzyme and does not get incorporated.

Note: In this example, only chemical proof reading is mentioned not kinetic proof reading.

5 0
3 years ago
Which of the following ideas did Charles Lyell subscribe to?
artcher [175]

He was a close friend to Charles Darwin so he helped him out in creating the theory of evolution so I would say C: He developed the idea of inheritance of acquired characteristics.

4 0
3 years ago
Carlos was in a car accident and received a head injury that resulted in a decreased ability to produce speech. carlos has more
galina1969 [7]
The brain is a part of the central nervous system together with the spinal chord.
The other part of the nervous system is the peripheral nervous system which is consisted of nerves and ganglions. 
Humans own their ability of speech to the three areas in the brain. 
Broca's area is essential for forming words, Wernicke's area helps us understand the meaning of words and the arcuate fasciculus connects these two areas and gives speech coherence. 
7 0
3 years ago
Hey guys i need help with an assignment and I need the answer quick
Ksju [112]

Answer:

Okay what is the assignment?

7 0
3 years ago
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