A teenager can grow 4 inches in a year during a "growth...

Name: Problem 2, Chapter 6: Biochemistry
Uploaded: 2021-12-22T16:08:12-08:00
Duration: 1 min 9 s
Channel: Hast Aggarwal
Description: A teenager can grow 4 inches in a year during a "growth spurt." Assuming that the increase in height is due to vertical growth of collagen fibers (in bone), calculate the number of collagen helix turns synthesized per minute.

A teenager can grow 4 inches in a year during a "growth spurt." Assuming that the increase in height is due to vertical growth of collagen fibers (in bone), calculate the number of collagen helix turns synthesized per minute.

Key Concepts

Collagen Structure

Collagen is a key structural protein found in connective tissues and bone. It features a unique triple helix structure made up of three polypeptide chains, with each complete helical turn representing a specific length along the molecule. Understanding the geometry of this helical structure is important when relating molecular growth to macroscopic changes in tissue dimension.

Bone Growth Mechanisms

During periods of rapid growth, such as during an adolescent growth spurt, bones elongate partly due to the synthesis and deposition of new collagen fibers. These fibers serve as a scaffold that not only contributes to the structural integrity of the bone but also guides the process of mineralization, which is essential for increased bone length.

Unit Conversion and Rate Calculations

Converting a macroscopic growth measure, such as an annual increase in bone length, into a molecular-scale rate requires careful unit conversion. This process involves translating length changes over a year into the equivalent number of structural events (such as collagen helix turns) on a per-minute basis, thus connecting large-scale observations to a molecular-level synthesis rate.

Protein Synthesis Dynamics

Protein synthesis is the cellular process that produces new proteins by assembling amino acids according to genetic instructions. In the context of collagen production, understanding the rate at which new helix turns are synthesized provides insight into the dynamics of protein production and tissue growth, linking cellular activity to physical growth in the organism.

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