Cell Transport

What is homeostasis?

• The process of an organism growing

• The need of an organism to stay stable by regulating internal conditions

• The way organisms reproduce

• The method of obtaining food

What does dynamic equilibrium mean in the context of homeostasis?

• Conditions are always the same

• Conditions change randomly

• Conditions stay within a range but are not always the same

• Conditions are never stable

What is a stimulus in the context of homeostasis?

• A constant internal condition

• A change in the environment

• A stable state of the organism

• A type of food

What is a response in the context of homeostasis?

• A change in the organism as a result of a stimulus

• A constant internal condition

• A stable state of the organism

• A type of food

What is the primary purpose of feedback mechanisms in organisms?

• To increase energy production

• To maintain homeostasis

• To enhance growth rate

• To improve sensory perception

How do feedback mechanisms use the output of a system?

• To create new inputs

• To signal a change in input

• To eliminate waste

• To generate energy

What are the two types of feedback mechanisms?

• Positive and negative

• Internal and external

• Active and passive

• Direct and indirect

What is a positive feedback loop?

• A process where the output reduces the response

• A process where the output intensifies the response

• A process where the input decreases the output

• A process where the input remains constant

Which of the following is an example of a positive feedback loop?

• Human child birth

• Photosynthesis

• Cellular respiration

• Water cycle

In the context of fruit ripening, what role does ethylene play in a positive feedback loop?

• It stops the ripening process

• It signals surrounding fruit to ripen

• It decreases the production of hormones

• It prevents neighboring fruit from ripening