Fill in the blanks with suitable words:

1. The instrument that led to the understanding of the cell is _________.

2. The organelle which controls the various activities of the cell is_____.

3. The organelle which is called the ‘kitchen of the plant cell’ is _____ .

4. The site of protein synthesis in the cell is _________.

5. The main chemical component of the cell wall is __________.

1. The instrument that led to the understanding of the cell is a microscope.

The microscope was designed by Robert Hooke who observed cork cells.

2. The organelle which controls the various activities of the cell is the nucleus.

The nucleus is called the command center of the cell. It contains the genetic material and controls all the activities of the cell.

3. The organelle which is called the ‘kitchen of the plant cell’ is chloroplast.

The chloroplast is a plastid that is covered by two membranes. It contains green pigment chlorophyll that is needed by the plant to make food through photosynthesis.

4. The site of protein synthesis in the cell is the ribosome.

Ribosomes are non-membrane bound organelles which are responsible for protein synthesis. They are also called as protein factory of the cell.

5. The main chemical component of the cell wall is cellulose.

The plant cell wall is made of cellulose (carbohydrate). It is the most abundant macromolecule on earth.