Homeostasis Quiz

What is homeostasis defined as?

• The process by which a living organism keeps its internal environment variable.

• The maintenance of a relatively constant internal environment, despite changes in the external environment.

• The ability of an organism to change its internal environment in response to external changes.

• The process by which an organism's internal environment becomes less stable to adapt to external conditions.

Answer explanation

Homeostasis is the maintenance of a relatively constant internal environment, despite changes in the external environment.

Which of the following is NOT a factor controlled by homeostasis?

• Temperature

• pH

• Concentration of ions

• Rate of photosynthesis

Answer explanation

Homeostasis controls factors such as temperature, pH, and concentration of ions. However, it does not control the rate of photosynthesis, which is determined by other factors.

What do multicellular organisms consist of?

• Single cells

• Many cells

• No cells

• Only neurons

Answer explanation

Multicellular organisms consist of many cells.

For cells to achieve homeostasis, what is necessary?

• They need to be static

• They need to be isolated

• They need to communicate with each other

• They need to stop functioning

Answer explanation

Cells achieve homeostasis by communicating with each other.

Which two systems are vital in helping your systems work together?

• Digestive and respiratory systems

• Nervous and endocrine systems

• Muscular and skeletal systems

• Circulatory and immune systems

Answer explanation

The nervous and endocrine systems are vital in helping your systems work together.

How does the speed of message transmission compare between the endocrine system and the nervous system?

• Both are fast

• Both are slow

• Endocrine system is slow, nervous system is fast

• Endocrine system is fast, nervous system is slow

Answer explanation

The endocrine system is slower than the nervous system in message transmission.

What is the duration of response in the nervous system compared to the endocrine system?

• Both have long-lasting responses

• The nervous system has a long-lasting response, while the endocrine system has a short response

• Both have short responses

• The nervous system has a short response, while the endocrine system has a long-lasting response

Answer explanation

The nervous system has a short response, while the endocrine system has a long-lasting response.

Through which system do hormones travel in the body?

• Circulatory system

• Nervous system

• Respiratory system

• Digestive system

Answer explanation

Hormones travel through the circulatory system in the body. This system allows hormones to be transported to their target organs and tissues efficiently.

What type of messages are transmitted by the nervous system?

• Hormones

• Electrical impulse and neurotransmitters

• Sound waves

• Light signals

Answer explanation

The nervous system transmits messages through electrical impulses and neurotransmitters, not hormones, sound waves, or light signals.

What is the purpose of a response in the Stimulus-Response Model?

• To detect a change in the environment

• To communicate between different parts of the system

• To alter or return the variance to norm

• To provide energy to the system

Answer explanation

The purpose of a response in the Stimulus-Response Model is to alter or return the variance to norm.