Which of the following is true?
A) The uracil nucleotide consists of the uracil nitrogen base, a deoxyribose sugar, and a phosphate group.
B) When tRNA attaches to mRNA during translation, cytosine pairs with guanine and adenine pairs with thymine.
C) Ribosomes contain RNA nucleotides and amino acids.
D) Only A and B are true E) A, B, and C are true

Respuesta :

Em28
A. The uracil nucleotide consists of the uracil nitrogen base, a deoxyribose sugar, and a phosphate group.

Ribosomes contain RNA nucleotides and amino acids. So the correct option is C.

What is the translation of proteins?

The formation of polypeptides from mRNA is called translation. mRNA is a 'messenger' between the DNA which contains the genetic information and proteins which actually perform the functions. mRNA stands for messenger RNA.

mRNA is formed from the process of transcription and precursor RNA processing. The mRNA has the instructions to construct a polypeptide in codes. These codes are separated into groups of three called the codon. Each codon codes for one amino acid.

Translation happens when a tRNA combines with an mRNA chain. For every codon on mRNA, tRNA has an anticodon. Anticodon binds to codon by base pairing. But since RNA does not have thymine, adenine binds to uracil. Since uracil nucleotide is present in the RNA, it has a uracil base, ribose sugar and a phosphate group.

The tRNA and mRNA bind inside ribosomes. Ribosomes are structures formed from RNA and amino acids.

Therefore, the correct option is C

Read more about the translation of proteins, here

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