F3 Chapter 1 : Stimuli and Responses

A stimulus is _________

• process in which organisms grow larger.

• a change in the environment that causes a reaction

• a reaction to a change in surroundings

• the center of a cell

Identify the stimulus..."A loud noise causes you to cover your ears"

• A loud noise

• You cover your ears

Identify the stimulus..."A person shivers because it is cold outside"

• Cold temperature

• A person shivers

A response is __________

• a change in the environment that causes a reaction.

• something you write on a test

• a reaction to a change in the environment

• the way plants communicate

Identify the response:

You are at the mall walking through the food court. You smell fresh baked pizza and realize that you skipped lunch. You buy a piece of pizza and eat it before going to buy your CD

• the smell of pizza

• buying a piece of pizza

• buying the CD

• food court

Plant grows toward the direction of sunlight.

• Stimulus

• Response

Retina has two types of photoreceptor: Cone cells and ______

• Rod cells

• Cone cells

• Sensory cells

• Optic nerves

Name of cells that sensitive to different light intensities

• Cone cells

• Rod cells

Cone cells are sensitive to color light as below (except)

• Blue

• Yellow

• Red

• Green

Part of human ear that not involved in hearing mechanism

• Semicircular canals

• Ossicles

• Cochlea

• Eustachian tube