In which type of cells, cell wall is not present?
Correct answer: D. Liver cells
- A. Plant cells
- B. Fungal cells
- C. Bacterial cells
- D. Liver cells
Explanation
A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism. No cells in the human body have a cell wall, hence liver cells will not have one either. Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth. The cell wall is a characteristic structure of fungi and is composed mainly of glucans, chitin, and glycoproteins. The bacterial cell wall consists of peptidoglycan, an essential protective barrier for bacterial cells that encapsulates the cytoplasmic membrane.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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