NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Organelles where amino acids link together to form proteins.
A
Lysosomes
B
Ribosomes
C
Centrioles
D
Mitochondria
Explanation: 

Detailed explanation-1: -Ribosomes ( /ˈraɪbəˌsoʊm, -boʊ-/) are macromolecular machines, found within all cells, that perform biological protein synthesis (mRNA translation). Ribosomes link amino acids together in the order specified by the codons of messenger RNA (mRNA) molecules to form polypeptide chains.

Detailed explanation-2: -Ribosomes help link amino acids together to form proteins.

Detailed explanation-3: -Amino acids are brought to the ribosome by transfer RNA (tRNA). During translation, the messenger RNA (mRNA) is read by the ribosome. The ribosome will read each codon, or three-base sequence, on the mRNA. The codon dictates which amino acid should be added to the protein.

Detailed explanation-4: -Ribosomes are tiny spherical organelles that make proteins by joining amino acids together. Many ribosomes are found free in the cytosol, while others are attached to the rough endoplasmic reticulum.

Detailed explanation-5: -As tRNAs enter slots in the ribosome and bind to codons, their amino acids are linked to the growing polypeptide chain in a chemical reaction. The end result is a polypeptide whose amino acid sequence mirrors the sequence of codons in the mRNA.

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