Importance of the Plasma Membrane in Cell Theory
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Questions and Answers

What is known as the basic unit of life?

  • Genetic material
  • Plasma membrane
  • Cytosol
  • Cell (correct)

Which of the following is NOT a common factor in cells?

  • Ribosomes
  • Cytosol
  • Mitochondria (correct)
  • Genetic material

What is responsible for the hereditary characteristics of the cell?

  • Plasma membrane
  • Ribosomes
  • Genetic material (correct)
  • Cytosol

Which organelle is not mentioned as a common factor in cells?

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

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

<p>To selectively control which substances are transported into or out of the cell (D)</p> Signup and view all the answers

What is the arrangement of the phospholipid bilayer in the plasma membrane?

<p>Hydrophobic tails facing inwards and hydrophilic heads facing outwards (C)</p> Signup and view all the answers

Which component of the plasma membrane allows it to selectively allow different substances to enter and leave the cell?

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

What is the main function of the plasma membrane's carbohydrates?

<p>To facilitate communication with other cells (B)</p> Signup and view all the answers

Which type of fatty acids in the tails of phospholipids would increase the fluidity of the plasma membrane?

<p>Unsaturated fatty acids (D)</p> Signup and view all the answers

Which substances require the assistance of a protein channel to cross the phospholipid part of the membrane?

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

In which organelle does aerobic cellular respiration occur, releasing usable energy in the form of ATP molecules?

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

What is the primary function of vacuoles in plants?

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

Which cell type has a cell wall that contains cellulose and provides cellular structure and protection?

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

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