Question

Which of the following is called suicidal bags?
A. Centrosomes
B. Lysosomes
C. Microsomes
D. Mesosomes

Answer 1

Hint: An eukaryotic cell is composed of many subcellular membranes bounded structures, such as the nucleus, endoplasmic reticulum, Golgi apparatus, mitochondria, plastids, vacuoles, centrioles, ribosomes, cell cytoplasm and many other structures that perform different functions. These cell organelles contain digestive enzymes in them.

Complete answer:
1. Lysosomes:- It is a small vesicle that is single membrane-bounded which contains hydrolytic enzymes in the form of minute semi crystalline granules and about fifty of them are recorded. Lysosomes help to digest unwanted components or digested components that can be toxic to the cell and it helps to remove from the inside to the outside of the cell.
2. Centrosomes:- It is an organelle that acts as a main microtubule organising centre for the animal cell. It is made up of two arrangements of a barrel-shaped cluster of microtubules and centrioles. It is a complex of protein that helps to form additional microtubules.
3. Microsomes:- They are heterogeneous vesicles that are reformed by the pieces of the endoplasmic reticulum. They are formed in the laboratory and are broken up to form microsomes. They are not found in healthy living cells of organisms.
4. Mesosomes:- It is also called chondroid which are the fold invaginations on the plasma membrane of the bacteria formed by the chemical fixation technique. They function either in DNA replication or cell division and excretion of exoenzymes.
Hence, the correct answer is option B.

Note: Cells are of two types named as prokaryotic cells and eukaryotic cells and both are different. A prokaryotic cell nucleus is not membrane-bounded, while in the case of eukaryotic cells, the nucleus is membrane bounded by a nuclear membrane.