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Murljashka [212]
3 years ago
9

Cellular organelles which use chemical energy stored within the covalent bonds

Biology
2 answers:
valina [46]3 years ago
5 0
Organelles that use chemical energy stored within the covalent bonds of
>> organelle molecules <<
nlexa [21]3 years ago
5 0

Mitochondria is the cell organelles which uses chemical energy stored within the covalent bonds of phosphates in ATP. ATP stands for adenosisne triphosphate. In ATP energy is help in covalent bonds. 2nd and 3rd phosphate groups have high energy bonds. The enzyme ATPase hydrolyses the 3rd high energy phosphate bond to separates into ADP + Pi + energy.

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Processing of the mRNA begins before transcription of eukaryotic mRNA\'s is complete. The end of the mRNA is prepared for recogn
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Answer:

The correct answer is

1. 5' end.

2. guanosine

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4. On the 7th position.

5. 2′ hydroxy-groups of the first 2 ribose sugars.

Explanation:

The eukaryotic mRNA is processed or modified with a guanosine cap at 5' end and poly-A tail at 3'end before translation.

The process of adding a cap at 5' end of a growing mRNA is known as capping. The process of capping adds guanosine nucleotide at the 5'-end of mRNAs by 5′ to 5′ triphosphate linkage. This guanosine is modified by methylating at the  7th position of the atom. The mRNA is further modified by methylation of first two ribose sugars at their 2′ hydroxy-groups. This capping is advantageous to the sequence as it protects the end from phosphatases and nucleases.

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3 years ago
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kari74 [83]
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