A cell is the _______ unit of life.

• smallest

• biggest

• principal

• only

A cell perform the three vital functions

• True

• False

_______ is a viscous liquid inside the cell. The organells float in it.

• Cytoplasm

• Chloroplast

• Nucleus

• Membrane

What is this?

• Cell wall

• Cell membrane

• Nucleus

• Membrane

__________ ___________ are composed by more than one cell.

• Multicellular organisims

• Unicellular organisims

• Muscle cells

• Nerve cells

A set of one type of cells that perform the same function is...

• A tissue

• A system

• An organ

• A cell

A set of tissues grouped together and perform the same function

• Cell

• Organ

• System

• Organism

Several organs that perform the same function form a...

• System

• Cell

• Tissue

• Organisim

Which is the correct organisation, from the simplest to the most complex?

• Cell - tissue - system - organ

• Cell - tissue - organ - system

• Cell - organ - tissue - system

• Organ - cell - tissue - system

                    Internal stimuli are changes that happen outside the body, in the environment.

• True

• False