Question

Anaerobic respiration takes place in the
A. Mitochondria
B. Cytoplasm
C. Lysosome
D. Endoplasmic reticulum

Answer 1

Anaerobic respiration is a method of respiration that occurs in the absence of oxygen. Respiration is a process of breakdown of glucose into smaller and simpler molecules.

Complete answer:
Respiration is the mechanism by which one can breathe. Plants can breathe like animals, too. The mechanism by which the organisms break down glucose occurs in a form that the cell may use energy and this process is called cellular respiration. There are two forms of respiration: anaerobic respiration and aerobic respiration.
Aerobic respiration occurs in the presence of oxygen, while anaerobic respiration occurs when there is no oxygen. Glucose breaks down without oxygen in anaerobic respiration. The chemical reaction will transfer glucose energy to the cell.
Anaerobic respiration generates lactic acid, instead of carbon dioxide and water. In eukaryotes, aerobic stages of cell respiration occur in mitochondria which is a type of cell organelle. These aerobic phases are the Krebs cycle and the transport chain of electrons. The mitochondria, therefore, have aerobic respiration. Most species cannot breathe without oxygen, but certain cells and tissues can still breathe when oxygen is out. Anaerobic respiration occurs only in the cell cytoplasm.
The cytoplasm is the jelly-like substance that occupies the space between the plasma membrane and the nucleus. Glucose is not completely dissolved in anaerobic respiration, but much less ATP is released than during aerobic respiration. Lactic acid must be oxidized to water and carbon dioxide.

Thus, choice B, i.e., cytoplasm, is the correct response.

Note: The cytoplasm serves as a shield and protects the cellular organelles from damage caused by other cell movements and collisions. There are several metabolic and enzymatic reactions in the cytoplasm. All cell organelles are suspended in the cytoplasm as well.