Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
What happens to the heart rate during the fight or flight response?
it remains the same
it increases
it stops
it decreases
|
What happens to the airway muscles during the fight or flight response?
they relax
they constrict
they remain the same
they disappear
|
What hormones are secreted from the adrenal medulla in response to a threat?
adrenaline and noradrenaline
adrenocorticotropic hormone (ACTH)
adrenaline and insulin
glucose and insulin
|
What gland is stimulated by the hypothalamus to release adrenocorticotropic hormone (ACTH)?
adrenal gland
pituitary gland
pancreas
thyroid gland
|
Why does the fight or flight response cause a rise in blood glucose levels?
to increase cellular respiration
to improve vision
to circulate more oxygenated blood
to allow more oxygen into the lungs
|
What happens first when the receptor protein changes shape in the cell signalling pathway for adrenaline?
it activates the enzyme adenylyl cyclase
it activates a G protein
it converts ATP into cyclic AMP
it activates protein kinases
|
What does adenylyl cyclase do in the cell signalling pathway for adrenaline?
it catalyses the breakdown of glycogen into glucose
it activates a G protein
it activates protein kinases
it converts ATP into cyclic AMP
|
What does cAMP do in the cell signalling pathway for adrenaline?
it catalyses the breakdown of glycogen into glucose
it activates a G protein
it activates the enzyme adenylyl cyclase
it activates many protein kinases via phosphorylation
|
What do protein kinases do in the cell signalling pathway for adrenaline?
they activate the enzyme adenylyl cyclase
they convert ATP into cyclic AMP
they activate enzymes that catalyse the breakdown of glycogen into glucose
they activate a G protein
|
How does glucose move out of liver cells in the cell signalling pathway for adrenaline?
by diffusion directly through the phospholipid bilayer
by active transport
by osmosis
by facilitated diffusion
|
What is the effect of one hormone molecule generating multiple cAMP molecules called?
division effect
addition effect
cascade effect
multiplication effect
|
What is the purpose of the cascade effect in the cell signalling pathway for adrenaline?
to decrease the number of molecules involved
to eliminate the number of molecules involved
to increase the number of molecules involved
to maintain the same number of molecules involved
|
In the cell signalling pathway for adrenaline, adenylyl cyclase converts ATP into cyclic AMP (cAMP), which acts as a messenger.
|