Question

The G protein
Converts ATP into CAMP
Activates adenylate cyclase
Activates kinases
Moves into the nucleus

Which of the following is considered the 1st messenger?
CAMP
the receptor
The Hormone
The G protein

Water soluble hormones
Do not need a transport protein
Do need a transport protein
Can pass into the nucleus
Can pass through the plasma membrane

Glucagon is released when
Only when lipolysis occurs
When blood levels increase and decrease
Blood glucose levels
increase
Blood glucose levels decrease

Beta cells produce/release
Glucagon
Kinases
Glycogen
Insulin

During humoral stimulation the stimulus for the release of a hormone is
The binding of a lipid soluble hormone to its receptor on the inside of a cell
The binding of another hormone to its receptor
An action potential
The changing level of a nutrient

Which is not a hormone released by the hypothalamus?
Corticotropin-releasing hormone (CRH)
Thyrotropin-inhibiting hormone
Growth hormone -inhibiting hormone (GHIH)
Prolactin-inhibiting hormone (PIH)

Which is not released by the anterior pituitary gland?
Anti-diuretic hormone (ADH)
Gonadotropin-releasing hormone Corticotropin-releasing hormone Prolactin-releasing hormone

Insulin stimulates the liver to
Increase glycogenolysis
decrease glycogenesis
Increase cellular uptake of glucose from the bloodstream
Increase gluconeogenesis
None of the above

Increased levels of a hormone
Up regulation
No change
Down regulation

Answer 1

Question No.1

Answer : Activates adenylate cyclase

Explanation: G protein couple receptor is a biochemical reaction which Activates adenylate cyclase enzyme that Convert ATP to Cyclic AMP (second messenger important in many biological processes used for intracellular signal transduction)

Question No.2

Answer : The Hormone

Explanation : primary Massanger includes steroid hormones, growth factors, chemoattractants and neurotransmitters.

secondary massanger includes PIP2, Phospholipase , IP3 , Ca and DAG...

Question No.3

Answer : Do need a transport protein

Explanation : Water soluble hormone need a transport protein because our cell membrane is made up of phospholipid , To cross the lipid bilayer they required a special protein .

Question No.4

Answer :- Blood glucose levels decrease

Question No.5

Answer :- Insulin

Explanation : Beta cell releas insulin , A hormone which decrease blood glucose level ...Thanks