NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL ORGANELLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Contains digestive enzymes to break down worn out parts of the cell.
A
vacuole
B
lysosome
C
ribosome
D
nucleolus
Explanation: 

Detailed explanation-1: -Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers-proteins, nucleic acids, carbohydrates, and lipids.

Detailed explanation-2: -Lysosomes Are the Principal Sites of Intracellular Digestion They contain about 40 types of hydrolytic enzymes, including proteases, nucleases, glycosidases, lipases, phospholipases, phosphatases, and sulfatases. All are acid hydrolases.

Detailed explanation-3: -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-4: -Lysosomes have powerful enzymes and acids to digest and recycle cell materials. Credit: Judith Stoffer. Proteins aren’t the only type of cellular waste. Cells also have to recycle compartments called organelles when they become old and worn out.

Detailed explanation-5: -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.

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