Concept:Cytoplasm is a jelly-like substance found inside every living cell. It is essential for supporting cell structures and enabling chemical reactions.
Explanation:Option A is wrong because only some cells, like plant cells, have a cell wall. Animal cells do not have a cell wall.
Option B is wrong because many cells, such as bacteria, lack a well-organized nucleus. Even some eukaryotic cells, like mature red blood cells, lose their nucleus.
Option C is correct. All living cells contain cytoplasm. This fluid fills the cell, holds organelles, and allows transport of materials within the cell.
Option D is wrong because chloroplasts are found only in plant cells and some algae. Animal cells and most other cells do not have chloroplasts.
Answer:C. All living cells have cytoplasm