What is mean by homeostasis?
A.controls and coordinates body activities through electrical impulses
B.Controls and coordinates body activities through chemical
C.For maintenance of a steady state in the internal environment
Which body system controls the body to maintain homeostasis?
A.excretory
B.nervous
C.skeletal
If the environment gets cold, we will often shiver in order to:
A.decrease body temperature
B.increase body temperature
C.regulate blood pressure
Why is the sensation of thirst important to maintaining homeostasis?
A.Water removed by the kidneys must be replaced
B.Water molecules are needed to carry carbon dioxide waste to the kidneys
The group of organisms that use the process of homeostasis includes
A.plants and animals
B.all living things
C.animals, only
Which of the following is NOT an example of homeostasis?
A.A human producing gametes
B.A bird drinking water when thirsty
C.A plant bending toward sunlight
Homeostasis is described as when the body is
A.functioning below capacity
B.functioning above capacity
C.balanced
When we sweat a lot during a hot day, the kidneys will produce more urine.
During a cold rainy day, the cat's blood vessels will constrict and its hair will erect to maintain its body temperature to the normal range.
Stomata open when they are exposed to a hot sun to increase the rate of respiration.
Which of the following is a physical factor involved in homeostasis?
A.The level of sugar in the blood
B.The change in the body temperature
Which of the following can regulate water in the plant?
A.Photosynthesis
B.Transpiration
C.Respiration
Which of the following activity shows the fastest pulse rate?
What is an example of TRANSPIRATION in plants?
A.Guard cells that open and close in response to the amount of water available
B.Vacuoles in animal cells turning sunlight into energy
C.Plant vomiting because it is too hot outside
D.Plants cells bursting because there is too much water.
The reason for all these corrective mechanisms during homeostasis is to......
A.Keep body warm
B. Cool down body
Why our hair will stands erect during cold days?
A.To let more blood flows near skin surface
B.To trap air which acts as heat insulator
C.To cool down skin when sweats is evaporated
Choose corrective mechanisms when body temperature decreases (2)
A.Hair Lies flat , blood vessel dilates
B.Hair stands erect , blood vessel constricts
C.Skeletal muscles move passively
D. Skeletal muscle move actively - shivering
Choose Corrective mechanisms when body temperature increases (2)
A.Blood vessel dilates
B.Blood vessel constricts
C.More sweats is produced
These are corrective mechanisms when ...
A.Water level Increases
B.Water level Decreases
C.Body temperature increases
D.Body temperature decreases
Which human body systems are involved in the Regulation of Water Level and Body Temperature? (2)
A.Respiratory system
B.Excretory systems
C.Muscular system
D.Endocrine system
Which organ acts as a control center of a homeostasis process?
A.Heart
B.Lungs
C.Brain
D.Kidneys
How does sweat keep us cool?
A.Sweat is cool, so it cools us down
B.As sweat evaporates, it removes heat from the skin
How is water transported from stems to leaves?
A.roots
B.phloem
C.stems
D.xylem
Which of the following indicates the pathway of water through a plant?
A.root hair cell --> xylem --> stomata
B.stomata --> root hair cell --> xylem
C.xylem --> stomata --> root hair cell
Cells that control the opening and closing of stomata
A.Guard cell
B.Vascular tissue
C.Stomata
Choose the two statements that indicate what would be happening in the plant when stomata are open. (2)
A.Guard cells are turgid
B.Guard cells are plasmolysed
C. Transpiration increase
D. Transpiration decrease