BIOLOGY [2 Mark Question Answer]

(i) mitochondrion
(ii) Energy Production
(iii) outer membrane, intermembrane space, inner membrane, cristae and matrix.

Part A: 1.Cell wall, 2. Cell Membrane 3.Platid 4.Vacuole 5Nucleus
Part B: A. Cell Membrane, B. Nucleus, C. Cytoplasm

The cell nucleus is a membrane-bound structure that contains a cell's hereditary information and controls its growth and reproduction. It is the command center of a eukaryotic cell and is usually the most notable cell organelle in both size and function.

Shape of cells play important role in determining their functions. Some examples are as follows: (i) Nerve cell is long and branched. The large length of nerve cell makes it carry messages over long distances in the body.

the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells cell theory was proposed by Theodor Schwann in 1839.

Centrioles are two barrel-shaped organelles found near the nuclear envelope in the cytoplasm of animal cells. The centromere is a very restricted DNA region in the middle of the chromosome. The centrosome is an organelle in an animal cell that serves as the organising centre for all microtubules.