Page 3 - SAAT BIOLOGY PART 1

SAAT BIOLOGY MR.MOHAMED ELGAYAR MRPROF.NET

• Environmental protection:

➢ to preserve species from extinction.

➢ Characteristics of organisms

• Levels of Organization:

➢ Living creatures show an organization in the composition

of their bodies. Multicellular organisms start with a cell,

then two or more of cells forms a tissue, a group of tissues

results in an organ - a group of organs form an organ

system.

• Reproduction:

➢ A biological process that increases the number of

individuals of the same species.

• Response to stimuli:

➢ A stimulus is anything that causes a reaction in a living

creature. Some are internal, such as feeling hungry. and

some are external, such as the temperature of the ocean.

➢ A response is the reaction of an organism to stimuli.

MRPROF.NET MR.MOHAMED ELGAYAR MRPROF.NET@GMAIL.COM 2