Form 1 Science (Coordination and Response)

Which of the following statements is the best to explain the need for homeostasis to the organism ?

• Avoid sudden death

• Maintain constant body temperature

• Ensure that all enzymes involved in chemical reactions work well

• Provides optimum internal environment for efficient metabolism activities

Which of the following helps in the regulation of body temperature?

• Brain

• Lung

• Stomach

• Liver

What body system is involved in the correction mechanisms experienced by Suzana when her body releases more sweat?

• Excretory system

• Blood circulatory system

• Digestive system

• Respirotary system

Shivering in the cold produces heat in the body.

• True

• False

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the corrective mechanism occurred when body temperature decrease from the normal ?

• Sweating

• Hair bends

• Blood vessels will contract

• The skeletal muscles are not active

Aiman is basking under sunlight. Which of the following is the corrective mechanism faced by Aiman?

• Skeletal muscles contract and relax actively

• Hairs stand erect

• Blood vessels dilate

• Decrease sweating

When performing active activities such as running 100m, the heart rate increases faster than in rest. Which of the following statements accurately describes this situation?

• Keep the body temperature constant

• Maintain water content in the body

• More oxygen can be forced into the lungs

• Ensure that all parts of the body receive the supply of oxygen and nutrients quickly

Tags

NGSS.HS-LS1-3

Adam measures his pulse rate before running. What is the changes on his pulse rate after running ?

• Increases

• Decreases

• No changes

Mechanism to reduce the amount of water in human's body

• Urination

• Sweating

• Feeling thirsty

• Shivering

What is the corrective mechanism occurred when body temperature decrease from the normal ?

• Sweating

• Hair bends

• Blood vessels will contract

• The skeletal muscles are not active