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Questions and Answers

What is the primary function of the nucleus in a cell?

  • Control of cellular activities (correct)
  • Synthesis of lipids
  • Formation of cell membrane
  • Storage of energy

Which component of the nucleus is primarily responsible for protein production?

  • Nuclear pores
  • Nucleoplasm
  • Chromatin
  • Nucleoli (correct)

What is the structure known as chromatin responsible for?

  • Forming ribosomes
  • Transmitting genetic information
  • Loosely coiled DNA in non-dividing cells (correct)
  • Storing energy

Which of the following correctly describes the nuclear envelope?

<p>Double membrane surrounding the nucleus (D)</p> Signup and view all the answers

What role do nuclear pores play in the nucleus?

<p>Transport and communication (D)</p> Signup and view all the answers

In which form is DNA tightly coiled during cell division?

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

What defines a gene in the context of DNA?

<p>DNA instructions for a single protein (C)</p> Signup and view all the answers

What is the function of the nucleoplasm?

<p>Contains ions, enzymes, and RNA (C)</p> Signup and view all the answers

What role do secretory vesicles play in the Golgi apparatus?

<p>They modify and package products for exocytosis. (A)</p> Signup and view all the answers

Which function is NOT performed by lysosomes?

<p>Producing ATP from glucose. (A)</p> Signup and view all the answers

Which statement about peroxisomes is true?

<p>They replicate by division. (C)</p> Signup and view all the answers

What process occurs in the matrix of mitochondria?

<p>Tricarboxylic acid cycle (TCA cycle). (A)</p> Signup and view all the answers

What is the primary function of the Golgi apparatus?

<p>To modify, package, and sort proteins. (D)</p> Signup and view all the answers

Which of the following occurs during autolysis?

<p>Lysosome membranes break down and enzymes are released. (C)</p> Signup and view all the answers

What is the main byproduct of the reaction that occurs in mitochondria during cellular respiration?

<p>Carbon dioxide. (D)</p> Signup and view all the answers

Which organelle is responsible for cleaning up inside cells and recycling damaged components?

<p>Lysosomes. (C)</p> Signup and view all the answers

What is the main function of the rough endoplasmic reticulum (RER)?

<p>Primary site for protein synthesis and folding (A)</p> Signup and view all the answers

Which of the following is NOT a function of the endoplasmic reticulum?

<p>Storage of DNA (C)</p> Signup and view all the answers

What is the role of lysosomes in a cell?

<p>Decompose cellular debris and damaged structures (A)</p> Signup and view all the answers

Which organelle is responsible for packaging and modifying proteins?

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

What type of ribosomes are found on the rough endoplasmic reticulum?

<p>Only fixed ribosomes (B)</p> Signup and view all the answers

What is a primary function of mitochondria?

<p>Energy production through ATP (A)</p> Signup and view all the answers

How do microvilli enhance cellular function?

<p>By increasing surface area for absorption (D)</p> Signup and view all the answers

What is the relationship between the centrioles and the cell division process?

<p>They form the spindle apparatus during division. (B)</p> Signup and view all the answers

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