Cell Biology: Golgi Body Functions
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Questions and Answers

What are the flattened, sac-like structures in the Golgi body called?

  • Vesicles
  • Cisternae (correct)
  • Lysosomes
  • Vacuoles

Which face of a cisterna is considered the forming face?

  • Periphery face
  • Convex face (correct)
  • External face
  • Concave face

What is one role of the Golgi body in cellular processes?

  • Cellular respiration
  • Formation of secretory vesicles (correct)
  • Protein synthesis
  • Cytoplasmic transport

How does the Golgi body assist in cellular absorption?

<p>By regulating the concentration of substances (B)</p> Signup and view all the answers

Which type of structure forms at the periphery of the Golgi body?

<p>Golgi vacuoles (B)</p> Signup and view all the answers

What is the primary function of mitochondria?

<p>Energy production (C)</p> Signup and view all the answers

Which organelles are involved in the formation of acrosomes in sperm cells?

<p>Mitochondria (B)</p> Signup and view all the answers

In which type of cells are mitochondria typically absent?

<p>Prokaryotic cells (D)</p> Signup and view all the answers

Which of the following best describes the membrane composition of mitochondria?

<p>Lipoproteins (A)</p> Signup and view all the answers

Who named mitochondria 'bioblast'?

<p>Altmann (A)</p> Signup and view all the answers

What is the role of mitochondria in cellular respiration?

<p>Production of ATP (D)</p> Signup and view all the answers

When were mitochondria discovered, and by whom?

<p>1850 by Kolliker (C)</p> Signup and view all the answers

Which organelle contributes to the formation of cell walls in plant cells?

<p>Golgi apparatus (A)</p> Signup and view all the answers

Flashcards

Golgi Apparatus Function

The Golgi apparatus packages and modifies proteins and lipids, secretes substances like mucus, and forms lysosomes.

Golgi Cisternae

Flattened, sac-like structures in the Golgi apparatus that process and package molecules.

Golgi Vesicles

Small membrane-bound sacs that bud off from the Golgi, transporting substances.

Golgi Body Structure

The Golgi body is composed of cisternae, vacuoles, and vesicles, all working together for cellular functions.

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Golgi's role in secretion

Golgi modifies proteins and packages them into vesicles before releasing them from the cell.

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Mitochondria Structure

Mitochondria are membrane-bound organelles with an outer and inner membrane. The inner membrane forms folds called cristae, and the innermost space is the matrix.

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Mitochondria Function

The primary role of mitochondria is producing energy (ATP) through cellular respiration. They are also involved in some other cellular processes.

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Mitochondria location

Mitochondria are found in most eukaryotic cells like plants, animals, and some microorganisms, but not in prokaryotes.

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Mitochondrial DNA

Mitochondria contain their own DNA and ribosomes, supporting their role in energy production.

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Mitochondria in RBCs

Mitochondria are present in most eukaryotic cells, including red blood cells in mammals.

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Mitochondria Discovery

Mitochondria were discovered by Kolliker in insects in 1850, and eventually named 'mitochondria' by Benda.

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Inner Membrane Folds

The inner membrane of the mitochondria is folded into structures called cristae, increasing surface area for chemical reactions.

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Cell Energy Production

Cellular respiration in the mitochondria converts energy from food into ATP, the cell's usable energy currency.

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Study Notes

Golgi Body

  • The Golgi body is a flattened sac-like structure, also called cisternae, arranged in a stack.
  • It is about 4 to 10 in number.
  • The Golgi body has a curved face (forming face) and a flattened face (maturing face).
  • The Golgi body has a size of 200-300Á.
  • The Golgi body is a part of the endomembrane system.
  • It is composed of vesicles.

Golgi Body Functions

  • Cellular secretion: The Golgi body packages and modifies proteins and other molecules before sending them to other parts of the cell or outside the cell.
  • Absorption, storage, and concentration of lipids, enzymes, and hormones.
  • Formation of secretory vesicles.
  • Formation of lysosomes.

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Description

Explore the Golgi body's structure and its essential functions in cellular processes. This quiz covers the roles of the Golgi body in secretion, storage, and the formation of vesicles in a cell. Test your knowledge on this crucial component of the endomembrane system!

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