Unit 3 Control and Coordination

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

Tags

NGSS.MS-LS1-3

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

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

• Toad

• Crocodile

• Fish

• Elephant