Question

Which one of the cell organelles is enclosed by a single membrane?
A. Mitochondria
B. Chloroplasts
C. Lysosomes
D. Nuclei

Answer 1

Cell actually has certain unique components known as cell organelles. These cell organelles are a type of cell waste storage device. They are often known as the cell’s suicide bag.

Complete answer:
There are various type of cell organelles found in cell including plasma membrane or cell wall, nucleus, cytoplasm, endoplasmic reticulum, mitochondria, golgi apparatus, chloroplasts, lysosomes, vacuoles, etc. Every type of cell organelle has a special function, such as the creation of new materials in the cell and the removal of waste from the cell. Thanks to these organelles a cell will survive and fulfill all its functions. Together they form the basic unit known as the cell. It is important to note that all cells have the same organelles, regardless of their role or species.

Mitochondria are known as the cell's powerhouses. Instead of only one, mitochondria have two membrane covers. The external membrane is highly porous and the internal membrane is tightly folded. These folds provide a wide area for chemical reactions generated by ATP.
Chloroplasts are classified as plastids containing chlorophyll pigment. For plant photosynthesis, chloroplasts are essential. In addition to chlorophyll, chloroplasts also contain distinct yellow and orange pigments. Chloroplast is an organelle bonded by a dual membrane that covers the alkaline stroma and thylakoid system of the internal membrane.
Lysosomes are a kind of waste disposal system of the cell. Through digesting some exterior substance and worn-out cell organelles, lysosomes help preserve cells clean. Single layer of common phospholipids is connected with lysosomes.
The nucleus is covered with a double layer called a nuclear membrane. The nuclear membrane has pores that permit the movement of material to the cytoplasm from inside the nucleus to the outside.

Thus, the correct answer is option C. i.e., Lysosomes.

Note: By digesting foreign materials and used organelles, lysosome helps keep the cell clean. Foreign materials, such as bacteria or food, and the old organelles enter the cell and split into small parts. This is because the lysosomes contain strong digestive enzymes that break down all organic matter. Lysosomes can burst and the enzymes digest their own cell during a perturbation of cellular metabolism.