NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following are components of cell theory?
A
Cells must contain DNA
B
All living things are made of cells
C
Cells only come from other cells
D
Cells are the basic unit of life
Explanation: 

Detailed explanation-1: -1 The Cell: a basic unit of life Each cell is a self-sustainable, self-reliant unit that can replicate itself and carry on all the metabolic processes essential for the continuation of life. Each cell of both single and multicellular organisms holds the keys necessary to produce viable offspring.

Detailed explanation-2: -By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

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