Cell Structure and Function - Introduction to Cell Biology

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Questions and Answers

What is the principal function of the plasma membrane in a cell?

  • Act as the storage site for cellular nutrients
  • Regulate the flow of materials into and out of the cell (correct)
  • Provide structural support to the nucleus
  • Generate energy for cellular activities

What does the term 'phospholipid bilayer' refer to in relation to the plasma membrane structure?

  • It is composed of two layers of phospholipids (correct)
  • It consists of two layers of proteins
  • It forms a single layer surrounding the cell
  • It is made up of two layers of cholesterol molecules

Which cellular structure forms the flexible outer surface of a cell?

  • Plasma membrane (correct)
  • Nucleus
  • Cytoplasm
  • Glycolipids

What is the role of cholesterol in the plasma membrane structure?

<p>Helps establish and maintain the appropriate cellular environment (D)</p> Signup and view all the answers

Which statement best describes the function of Glycolipids in the plasma membrane?

<p>Identify the cell to other cells (D)</p> Signup and view all the answers

What is the primary role of Integral Proteins in the plasma membrane?

<p>Facilitate the transport of molecules across the membrane (A)</p> Signup and view all the answers

Which organelle in an animal cell is known as the 'powerhouse'?

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

What is the function of lysosomes in a cell?

<p>Break down materials in the cell (D)</p> Signup and view all the answers

Where are ribosomes primarily located in a cell?

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

Which cellular component carries proteins and other materials within the cell?

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

What is the main function of the cytosol in the cytoplasm?

<p>Contain fluid portion of cytoplasm (B)</p> Signup and view all the answers

What is the function of peroxisomes in a cell?

<p>Break down old cell parts (A)</p> Signup and view all the answers

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