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What evidence suggests a symbiotic origin for Mitochondria?
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Mitochondria contain their own ribosomes (70S) and DNA, indicating they may have originated from a symbiotic relationship.
Identify the key function of the Golgi Apparatus within a cell.
The Golgi Apparatus modifies and packages proteins for transport, similar to a post office.
What is the purpose of Lysosomes in an animal cell?
Lysosomes contain digestive enzymes that break down old organelles and pathogens within the cell.
Describe the role of Cytoplasm in a cell.
Cytoplasm is a jelly-like substance that fills the cell and provides a site for many chemical reactions.
Define the function of Centrioles in the context of cell division.
Centrioles are involved in cell division by forming spindle fibers during mitosis and are composed of two hollow tubes at right angles.
Discuss the roles of Smooth Endoplasmic Reticulum (SER) in a cell.
The SER is responsible for the synthesis of lipids and is composed of tubular structures.
How do Ribosomes differ between eukaryotic and prokaryotic cells?
Eukaryotic cells have 80S ribosomes, while prokaryotic cells have simpler 70S ribosomes.
What role does the Plasma Membrane play in a cell?
It acts as the city wall of the cell by protecting it and controlling the movement of substances in and out.
Explain the function of the Rough Endoplasmic Reticulum (RER).
The RER is involved in protein synthesis and is characterized by flattened sacs with ribosomes on its surface.
Describe the primary functions of the Nucleus in an animal cell.
The nucleus acts as the control center or town hall of the cell, surrounded by a double membrane with pores, and manages the overall activities of the cell.
How does the function of the Nucleolus differ from the Nucleus?
The nucleolus, located inside the nucleus, is a dense DNA region where ribosome production occurs.
What are the functions of Mitochondria in an animal cell?
Mitochondria produce ATP through cellular respiration and have a double membrane with folded inner membrane; they also contain their own ribosomes (70S) and DNA.
What is the relationship between Vesicles and intracellular transport?
Vesicles are small membrane-bound sacs that transport substances within the cell.
Why is the ability to identify organelles in electron micrographs important?
Visual identification is crucial for understanding the structure and function of organelles within cells.
How do cells contribute to the hierarchy of biological organization?
Cells form tissues, which form organs, which form systems, and ultimately make up an organism.
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