Question:

Read the following statements and select the correct option. Statement 1 : Mitochondria are common to both plant and animal cells. Statement 2 : The number of mitochondria in a cell does not correspond to the function of the cell. Choose the correct option from the following.

Updated On: Aug 2, 2023
  • Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
  • Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
  • Statement 1 is true and statement 2 is false.
  • Both statements 1 and 2 are false.
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The Correct Option is C

Approach Solution - 1

Answer (c) Statement 1 is true and statement 2 is false.
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Approach Solution -2

Ans: Mitochondria is  a cell organelle that is common in both plants and animal cells. They are the double membrane bound organelles. They are the powerhouse of the cell as they help in the production of ATP through cellular respiration. 
Statement 2 is false: this is because the number of mitochondria will correspond to the energy demand of the cells. The number of mitochondria can vary depending on the metabolic activity and specific function of the cells. The muscle cells or cells involved in active transport, tend to have a higher number of mitochondria to meet their energy needs

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Concepts Used:

Cells

  • A device that converts chemical energy into electrical energy is called an electric cell. To an electric circuit, the battery provides the constant electromotive force.
  • Each cell comprises 2 half cells which are connected in series by a conductive electrolyte containing anions and cations:
    • One-half cell is made up of electrolyte and a negative electrode called an anion.
    • The other half cell is made up of electrolytes and a positive electrode called a cathode.
  • Redox reactions take place simultaneously.
  • While charging, cations are reduced at the cathode, and anions are oxidized at the anode.
  • Electrodes do not join each other as they are electrically connected by the electrolyte.