NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL ORGANELLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This organelle breaks down (digest) worn out cell parts
A
cytoplasm
B
lysosomes
C
mitochondria
D
vacuoles
Explanation: 

Detailed explanation-1: -A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.

Detailed explanation-2: -Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself.

Detailed explanation-3: -Lysosomes break down macromolecules into their constituent parts, which are then recycled. These membrane-bound organelles contain a variety of enzymes called hydrolases that can digest proteins, nucleic acids, lipids, and complex sugars. The lumen of a lysosome is more acidic than the cytoplasm.

Detailed explanation-4: -Lysosomes contain portions of cytoplasmic components such as glycogen, mitochondria, or cisternae of the endoplasmic reticulum. Hydrolytic enzymes (phosphatases and proteases) provide intracellular digestion of worn-out cellular organelles and materials taken into the cell by endocytosis.

Detailed explanation-5: -Lysosomes are membrane-bound organelles found in every eukaryotic cell. They are widely known as terminal catabolic stations that rid cells of waste products and scavenge metabolic building blocks that sustain essential biosynthetic reactions during starvation.

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