Multiple Choice
Which protein is primarily responsible for transporting oxygen in the human bloodstream?
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4. Biomolecules
Proteins
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How are proteins formed in the human body?
A
By combining fatty acids and glycerol in the cytoplasm
B
By converting nucleic acids directly into polypeptides
C
By linking amino acids together through peptide bonds during translation
D
By breaking down carbohydrates into smaller sugars
Verified step by step guidance1
Understand that proteins are macromolecules made up of amino acids linked together in a specific sequence to form polypeptides.
Learn that the process of protein formation occurs during translation, which is part of gene expression. Translation takes place in the cytoplasm at the ribosome.
Recognize that amino acids are linked together by peptide bonds. A peptide bond is a covalent bond formed between the carboxyl group () of one amino acid and the amino group () of another amino acid.
Understand that the sequence of amino acids in a protein is determined by the sequence of codons in messenger RNA (mRNA), which is transcribed from DNA. Each codon specifies a particular amino acid.
Learn that the ribosome facilitates the formation of peptide bonds between amino acids as it moves along the mRNA strand, resulting in the synthesis of a polypeptide chain that folds into a functional protein.
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