What is a biological Stimulus?

• A biological stimulus is a type of organism.
• A biological stimulus is a chemical reaction in cells.
• A biological stimulus is a form of energy that cannot be measured.
• A biological stimulus is a factor that elicits a response in an organism.

A type of stimulus coming from outside the organism, from the environment, would be called..

• internal stimulus
• biological stimulus
• chemical stimulus
• external stimulus

A type of stimulus coming from inside an organism's body, would be called..

• reflex stimulus
• environmental stimulus
• external stimulus
• internal stimulus

Which of the following is an example of an organism responding to an external stimulus?

• 1. A person is hungry and decides to get lunch.

• 1. A dog barks at the mail carrier.

• 1. A cat sleeps. wet

• 1. A bacterium continues moving in its current path.

Which of the following would be considered a good, or positive, external stimulus?

• 1. A sour lemon

• 1. A loud, piercing sound

• 1. A painful burn

• 1. A delicious-smelling pizza

Tags

NGSS.MS-LS1-8

Which of the following is an example of an organism responding to a bad, or negative, stimulus?

• 1. A bacterium moving toward a food source.

• 1. A baby human activating a light up toy.

• 1. A wolf following the smell of prey.

• 1. A kitten spitting out a bite of pickle.