Hydrocarbons only contain hydrogen and carbon and are therefore ___.

Water, H2O, is:

Main energy storage molecule of most plants:

Which of the following does NOT have double bonds?

Fatty acids belong to which category of biomolecules?

What is the smallest unit of LIFE?

The function of flagella in the cells is ___.

Which of the following structures is only found in plant cells (not in animal cells)?

Which image below shows how water molecules hydrogen bond? hydrogen bond2.png  A                       hydrogen bond3.png   B hydrogen bond1.png   C

The outer layer labeled with the letter H is the ____ which gives the cell ________. plant cell(1).png