Identifying the Incorrect Organelle and Scientist Match

The question asks us to identify which of the given pairs of a cell organelle and the scientist associated with its discovery or significant observation is NOT correctly matched. Let's examine each option to determine the correct associations.

Analyzing Each Organelle Discovery Match

• Lysosomes - Christian de Duve: Christian de Duve, a Belgian cytologist and biochemist, is widely credited with the discovery of lysosomes in the 1950s. He also discovered peroxisomes. This pair is a correct match.
• Chloroplast - Altman: Richard Altmann was a German histologist who is known for his significant work on mitochondria in the late 19th century. He observed granular structures in cells and coined the term 'bioblasts' for them, which were later identified as mitochondria. While Altmann contributed significantly to the understanding of cell structures, he is not associated with the discovery of chloroplasts. Chloroplasts were observed much earlier by scientists like Hugo von Mohl in the mid-19th century, although their function and structure were further elucidated over time by many researchers. Therefore, associating Altman with chloroplasts is incorrect.
• Mitochondria - Albert von Kolliker: Albert von Kolliker, a Swiss histologist, observed granular structures in muscle cells in the 1850s. These structures were later termed mitochondria. While the name 'mitochondria' was coined by Carl Benda later, Kolliker's observation was a crucial early step in identifying these organelles. This pair represents a significant early association with mitochondria and is considered a correct match in the context of historical observations.
• Ribosome - George E Palade: George E. Palade, a Romanian-American cell biologist, was a pioneer in using electron microscopy to study cell structures. In the 1950s, he discovered ribosomes and described them as small particles responsible for protein synthesis. This is a correct match.

Based on the analysis, the match "Chloroplast - Altman" is the incorrect one, as Altman's significant work was on mitochondria, not chloroplasts.

Conclusion on the Incorrect Match

Reviewing the provided options and the historical discoveries related to cell organelles:

• Lysosomes were discovered by Christian de Duve. (Correct match)
• Mitochondria were observed early on by Albert von Kolliker (and later named by Carl Benda), with significant work by Richard Altmann on 'bioblasts'. (Correct match for Kolliker's early observation)
• Ribosomes were discovered by George E Palade. (Correct match)
• Chloroplasts were observed earlier by others, and Altmann is known for his work on mitochondria. (Incorrect match)

Therefore, the pair that is NOT a correct match is Chloroplast - Altman.

Revision Table: Organelle Discoverers

Additional Information on Cell Organelle Discovery

The history of discovering and understanding cell organelles is intertwined with the development of microscopy techniques. Early light microscopes allowed visualization of larger structures like the nucleus and chloroplasts. The advent of the electron microscope in the mid-20th century revolutionized cell biology, enabling scientists to see much finer details and leading to the discovery of smaller organelles like ribosomes, lysosomes, and the structure of mitochondria and chloroplasts.

Scientists like Christian de Duve, George E. Palade, and others used sophisticated biochemical techniques and electron microscopy to isolate and characterize these organelles, linking their structure to specific functions within the cell. This research formed the foundation of modern cell biology.