Anatomy Of The Composite Cell

Anatomy Of The Composite Cell 1. Label The Cell Structures Using The Leader Lines Provided. 2. Match Cach Cell Structure In List A With The Correct Description In List B List A 1. Ribosome 2. Smooth ER 3. Mitochondrion _4. Nucleus 5. Golgi Apparatus 6. Lysosome 7. Centriole 8. Cytoskeleton 9. Inclusion _10. Plasma Membrane 11. Nucleolus List B A. Main Site

The Correct Answer and Explanation is :

Here’s the correct matching of the structures from List A to their descriptions in List B:

List A – List B Match:

1. Ribosome → E. Site of protein synthesis
2. Smooth ER → H. Lipid and steroid synthesis, detoxification of drugs
3. Mitochondrion → A. Main site of ATP production (cellular respiration)
4. Nucleus → D. Control center of the cell, contains genetic material (DNA)
5. Golgi Apparatus → C. Packaging, modification, and distribution of proteins/lipids
6. Lysosome → G. Contains digestive enzymes for breaking down waste/materials
7. Centriole → I. Organizes microtubules during cell division
8. Cytoskeleton → F. Provides structural support and helps in intracellular transport
9. Inclusion → J. Stored nutrients, waste, or cell products
10. Plasma Membrane → K. Regulates entry and exit of materials into/out of the cell
11. Nucleolus → B. Produces ribosomes

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Explanation:

A composite cell is a theoretical model that combines the most important organelles found in animal cells to illustrate how they function. Here’s a breakdown of the key organelles:

1. Ribosomes are critical for synthesizing proteins by translating messenger RNA (mRNA).
2. The Smooth ER synthesizes lipids and steroids, aids in detoxifying harmful substances, and stores ions like calcium.
3. Mitochondria, known as the cell’s “powerhouse,” produce ATP through cellular respiration, an essential energy currency.
4. The Nucleus contains DNA, serving as the cell’s command center, directing protein synthesis and cell division.
5. The Golgi Apparatus modifies and packages proteins and lipids into vesicles for transport within or outside the cell.
6. Lysosomes break down old organelles, macromolecules, and cellular debris using hydrolytic enzymes.
7. Centrioles organize microtubules during mitosis, ensuring accurate chromosome separation.
8. The Cytoskeleton is a network of fibers that maintain the cell’s shape, provide mechanical support, and assist in movement.
9. Inclusions are non-living components like glycogen, lipids, or pigments stored in the cytoplasm.
10. The Plasma Membrane is a semi-permeable barrier controlling substance entry/exit, maintaining homeostasis.
11. The Nucleolus manufactures ribosomal RNA (rRNA) and assembles ribosome subunits.

This interplay of organelles supports the cell’s survival, growth, and reproduction.