Are the organelles that process coded genetic messages and assemble amino acids into proteins

Answer

            Ribosome is an imporatnat cell organelle that play a key role in protein synthesis.

Discovery

            Ribosome was discovered by Palade in 1955.

Structural composition

             Chemically it is composed of an equal amount of rRNA and proteins, thats why it is also known as ribonucleoprotein.

Sub units of ribosomes

             Ribosome is composed of two sub units one is smaller and the other one is larger. Both units are attached with each other with help of Mg atom.

Size of ribosome

             In prokaryote the ribosome size is 70S, while in eukaryotes its size is 80S.

Polysome

          When many ribosomes are attached to one mRNA strip it is called polysome or poly ribosome.

Role of ribosome

             Ribosomes are the sites of synthesis of protein from amino acids.

Mechanism

       mRNA which is the exact copy of DNA and formed in transcription come out from nucleus and attached to ribosomes. Now tRNA catch amino acids and come toward ribosome where its anti code match with genetic code of mRNA and then bonded to it. In this fashion a lot of amino acids are accumulated which make bonds with each others. Thus message present on mRNA in the form of genetic codes convert into protein through the process of transliteration.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

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