Ch. 3 The Cellular Level of Organization: Plasma Membrane Structure
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Questions and Answers

What is the process by which extracellular materials are packaged in vesicles at the cell surface and imported into the cell?

  • Endocytosis (correct)
  • Pinocytosis
  • Phagocytosis
  • Exocytosis

Which process brings solid materials from outside the cell into the cell?

  • Mitosis
  • Endocytosis (correct)
  • Pinocytosis
  • Exocytosis

What is the term for the process of vesicle content being released into the extracellular environment?

  • Pinocytosis
  • Phagocytosis
  • Exocytosis (correct)
  • Endocytosis

Which phase of the cell cycle involves the duplication of chromosomes?

<p>S phase (C)</p> Signup and view all the answers

What is the term for the process of distribution of two sets of chromosomes during cell division?

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

Which term refers to the ability of cancerous cells to spread to other parts of the body?

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

Which organelle is responsible for producing energy to carry out the functions of life?

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

What is the primary function of smooth endoplasmic reticulum in liver cells?

<p>Inactivate or detoxify lipid-soluble drugs (B)</p> Signup and view all the answers

What is the main role of cilia in the respiratory and reproductive systems?

<p>Move fluids or secretions across the cell surface (D)</p> Signup and view all the answers

What happens to the nerve cells in Tay-Sachs disease due to the lack of a specific enzyme?

<p>They produce excessive ganglioside (D)</p> Signup and view all the answers

What is the function of proteasomes in the cell?

<p>Remove unneeded, damaged, or faulty proteins (C)</p> Signup and view all the answers

Which organelle generates hydrogen peroxide and has an enzyme called catalase to protect the cell from the damaging effects of free radicals?

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

What is the principal function of the Golgi apparatus?

<p>Process, sort, and deliver proteins and lipids (C)</p> Signup and view all the answers

Which organelle contains digestive enzymes for breaking down organic polymers?

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

What is the composition of cytosol, also known as intracellular fluid?

<p>Mainly water, plus proteins, carbohydrates, lipids, and inorganic substances (D)</p> Signup and view all the answers

What is the basic framework of the plasma membrane made up of?

<p>Phospholipids, cholesterol, and glycolipids (D)</p> Signup and view all the answers

Which part of the cell structure makes up 55 percent of the weight of the plasma membrane?

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

What is the function of recognition proteins in the cell?

<p>Help cells recognize and respond to specific molecules in their environment (C)</p> Signup and view all the answers

What is the role of carrier proteins in the cell?

<p>Binds solutes and transports them across the plasma membrane (D)</p> Signup and view all the answers

What structure helps determine cell shape and function in intracellular transport of organelles?

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

During cell division, which structure aids in the formation of the spindle apparatus needed for movement of chromosomes?

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

What is the function of microfilaments in a cell?

<p>Aid in movement and mechanical support (A)</p> Signup and view all the answers

What is the main function of ribosomes in a cell?

<p>Responsible for protein synthesis (D)</p> Signup and view all the answers

What is the primary function of lysosomes within a cell?

<p>Destroy bacteria and cleanup inside the cell (D)</p> Signup and view all the answers

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