NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL ORGANELLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does the term organelle refer to?
A
A major structure within a cell that performs a life function.
B
The movement of materials from high concentration to low concentration.
C
The structure that contains the genetic material (DNA) and is the control center of the cell.
D
The energy producing site in the cell where respiration takes place.
Explanation: 

Detailed explanation-1: -An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes, which assemble proteins.

Detailed explanation-2: -A small structure in a cell that is surrounded by a membrane and has a specific function.

Detailed explanation-3: -Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.” In the same way organs, such as the heart, liver, stomach, and kidneys, serve specific functions to keep an organism alive, organelles serve specific functions to keep a cell alive.

Detailed explanation-4: -They are responsible for the synthesis of substances like lipid, protein, starch, etc. Cell organelles generate energy. They secrete hormones, enzymes, etc. They are involved in the digestion of substances taken up by the cell.

Detailed explanation-5: -This organelle has two major functions: it stores the cell’s hereditary material, or DNA, and it coordinates the cell’s activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division).

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