Question

Which of the following are covered by a single membrane? 

 A. Mitochondria 

 B. Vacuole 

 C. Lysosome

 D. Both B and C

Answer 1

Hint: These are layer encased organelles that contain a variety of catalysts equipped for separating a wide range of natural polymers—proteins, nucleic acids, sugars, and lipids. These work as the stomach related arrangement of the cell, serving both to debase material taken up from outside the cell and to process outdated parts of the actual cell.

Complete answer:

A lysosome is covered by a single membrane. Lysosomes are an essential cell organelle present inside the eukaryotic animal cells. Due to their function, they are also called as the “suicide bags” of the cell. Lysosomes are single membrane-bound organelles and the region inside the membrane is known as the lumen, which includes the hydrolytic enzymes and other cellular debris.  The vital role of lysosomes is digestion and removal of waste. Cellular debris or foreign particles are pulled into the cell by the process of endocytosis. The process of endocytosis takes place when the cell membrane falls in on itself (invagination), creating a vacuole or a pouch near the external contents and then bringing those contents into the cell.

Vacuole is also a single membrane structure or organelle found in the cytoplasm with varying sizes. Whereas mitochondria given in the option is double membrane bound organelle.

Additional information:

Lysosomes  comprise around fifty different degradative catalysts that can hydrolyze proteins, DNA, RNA, polysaccharides, and lipids. Changes in the qualities that encode these catalysts are answerable for in excess of 30 distinctive human hereditary illnesses, which are called lysosomal capacity sicknesses on the grounds that undegraded material collects inside the lysosomes of influenced people. A large portion of these illnesses result from lack in single lysosomal catalysts. For instance, Gaucher's illness (the most widely recognized of these issues) results from a change in the quality that encodes a lysosomal compound needed for the breakdown of glycolipids. A charming special case is I-cell illness, which is brought about by an inadequacy in the compound that catalyzes the initial phase in the labeling of lysosomal proteins with mannose-6-phosphate in the Golgi contraption. The outcome is an overall disappointment of lysosomal proteins to be fused into lysosomes.

So, the correct answer is option D. Both B and C.

Note:

The term was given by Christian de Duve. In their least difficult structure, lysosomes are pictured as thick round vacuoles, however they can show impressive variety fit as a fiddle because of contrasts in the materials that have been taken up for processingLysosomes consequently address morphologically different organelles characterized by the regular capacity of debasing intracellular material.