Question

Drag each label to the correct location. A scientist studied the formation of the protein hemoglobin and made a chart to show the steps in the process. Arrange the labels to complete the steps for the formation of hemoglobin.

1) mRNA travels to a ribosome where its codons will be 'read'
2) Amino acids released by tRNA form peptide bonds
3) DNA molecule is 'unzipped' in nucleus
4) RNA polymerase is used to build a mRNA molecule

Answer 1

The formation of hemoglobin starts with transcription in the nucleus, where DNA is unzipped and mRNA is synthesized. The mRNA then travels to the ribosome where translation occurs, reading the mRNA codons and assembling amino acids into a polypeptide chain via peptide bonds.

Step-by-step explanation:

The formation of hemoglobin involves several biosynthetic processes that follow the Central Dogma of molecular biology: DNA→mRNA→Protein. To arrange the steps correctly:

1. DNA molecule is 'unzipped' in the nucleus.
2. RNA polymerase is used to build a mRNA molecule.
3. mRNA travels to a ribosome where its codons will be 'read'.
4. Amino acids released by tRNA form peptide bonds.

In the process of transcription, the DNA is unzipped, and RNA polymerase synthesizes mRNA. The mRNA then travels from the nucleus to the cytoplasm, where it reaches the ribosomes. During translation, the ribosome reads the codons on the mRNA, and tRNA molecules bring the corresponding amino acids, which are linked together by peptide bonds to form a polypeptide chain that ultimately folds into the functional protein hemoglobin.

Answer 2

The formation of hemoglobin involves the unzipping of the DNA molecule, followed by the synthesis of mRNA using RNA polymerase. The mRNA is then read by ribosomes, and amino acids are brought by tRNA to form peptide bonds, resulting in the formation of the hemoglobin protein.

Step-by-step explanation:

Formation of Hemoglobin

1. DNA molecule is 'unzipped' in the nucleus
2. RNA polymerase is used to build an mRNA molecule
3. mRNA travels to a ribosome where its codons will be 'read'
4. Amino acids released by tRNA form peptide bonds

During the process of protein synthesis, the formation of hemoglobin follows these steps. First, the DNA molecule is 'unzipped' in the nucleus. Then, RNA polymerase is used to build an mRNA molecule which carries the genetic information. Next, the mRNA travels to a ribosome where its codons are 'read.' Finally, amino acids released by tRNA form peptide bonds, resulting in the formation of the hemoglobin protein.