GRADE 9 CELL

Cells were first discovered by ______in 1665.

• Robert Brown

• Robert Hooke

• Schleiden and Schwann

_____ in 1839 coined the term ‘protoplasm’ for the fluid substance of the cell.

• Purkinje

• Robert Hooke

• Robert Brown

• Leeuwenhoek

____ is a Latin word for ‘a little room’.

• Plasma

• Nucleus

• Cell wall

• Cell

The cell theory states that all the plants and animals are composed of ____ and that the cell is the basic unit of life.

• Mitochondria

• cells

• cell wall

• plasma

The cell theory was presented by the biologists ____.

• Schleiden (1838) and Schwann (1839)

• Robert Hooke and Robert Brown

• Leeuwenhoek

• Purkinje

A single cell may constitute a whole organism known as ____ organisms.

• multicellular

• unicellular

• microscopic

• many

Some fungi, plants and animals are _______ organisms.

• unicellular

• multicellular

• single-cell

• cycloplasmic

Chlamydomonas, Paramoecium and bacteria are ________ organisms.

• Multicellular

• single-celled

• Unicellular

• None of the above