Form 1 Science Chapter 3 Coordination and Responses

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 metabolic activity

Tags

NGSS.HS-LS1-3

Shivering in the cold produces heat in the body.

• True

• False

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

All chemical reactions in living cells are controlled by _________________ that are sensitive to surrounding changes.

• brain

• nerve

• fluids

• enzymes

Tags

NGSS.MS-LS1-7

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

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

• Excreation system

• Blood circulatory system

• Digestive system

• Respirotary system

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

• Brain

• Lung

• Stomach

• Liver

Which of the following helps in the homeostasis control process?

P - Organ

Q - Endocrine glands

R - Muscles

S - Nerve

• P, Q and R only

• P, R and S only

• Q, R and S only

• P, Q, R and S

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

Which of the following organisms can maintain body temperature, even though the temperature in the surroundings changes significantly?

• Toad

• Crocodile

• Fish

• Elephant