Cell Biology Quiz on Organelles and Their Functions
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Questions and Answers

What is the primary function of nuclear pores?

  • Protein synthesis
  • Cell division
  • DNA replication
  • Transport of materials in and out of the nucleus (correct)

Which structure houses genetic information in a cell?

  • Nucleoplasm
  • Chromosomes (correct)
  • Ribosomes
  • Endoplasmic Reticulum

What is the primary function of ribosomes?

  • Breaking down waste
  • Producing proteins (correct)
  • Transporting materials
  • Packaging proteins

Which of the following statements about ribosomes is true?

<p>Ribosomes are involved in protein synthesis. (D)</p> Signup and view all the answers

Which organelle is responsible for modifying and sorting proteins?

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

What are the two types of Endoplasmic Reticulum mentioned?

<p>Rough ER and Smooth ER (B)</p> Signup and view all the answers

How do lysosomes contribute to cellular function?

<p>Digest and recycle waste (A)</p> Signup and view all the answers

How do the nucleoplasm and cytoplasm interact?

<p>Through the nuclear pores (B)</p> Signup and view all the answers

What structure of the Golgi apparatus aids in the transport of proteins?

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

Which organelle is characterized by the presence of ribosomes and is involved in protein synthesis?

<p>Rough Endoplasmic Reticulum (C)</p> Signup and view all the answers

What is the primary function of lysosomal enzymes in cells?

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

What characteristic of mitochondria contributes to their function in energy extraction?

<p>Folded inner membranes (B)</p> Signup and view all the answers

What determines the number of mitochondria present in a cell?

<p>Cell activity level (C)</p> Signup and view all the answers

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

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

What role do enzymes play in relationship to cell membranes?

<p>They facilitate reactions on the membrane (C)</p> Signup and view all the answers

Flashcards

Nuclear Pores

Openings in the nuclear envelope that allow the transport of materials between the nucleus and cytoplasm.

Chromosomes

Structures containing genetic information, crucial for an organism's traits.

Ribosomes

Cell organelles responsible for protein synthesis.

Endoplasmic Reticulum

Network of membranes in cells involved in protein synthesis and modification.

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Nucleoplasm/Cytoplasm

The fluid substance within the nucleus & cell, respectively. They communicate through pores in the nuclear envelope.

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Ribosomes' function

Ribosomes create proteins.

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RER function

Rough ER produces and modifies proteins with ribosomes attached.

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Golgi Apparatus role

The Golgi modifies, sorts, and packages proteins into vesicles.

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Lysosome function

Lysosomes break down waste and recycle materials using enzymes.

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Golgi system purpose

The Golgi system handles packaging and transportation within the cell.

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Enzyme function

Enzymes speed up chemical reactions in cells.

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Mitochondria structure

Mitochondria have a double membrane and folded inner membrane.

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Mitochondria's role

Mitochondria break down nutrients to release energy.

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Cell membrane function

Controls what enters and exits the cell.

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Mitochondria number

Cells with higher activity need more mitochondria.

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