Answer:
Receptors are highly specific and only have high affinity for those ligands for whom they are specific.
Explanation:
Receptors are proteins that receive a stimulus or bind a ligand and mediate effects via receptor effector system.
Receptors are macromolecules that are highly specific.
The affinity between the ligand and the receptors is determind by the disassociation constant Kd.
The receptors produce maximun effect when an appropriate specific stimulus is present.
Different recptors types are present for different ligands.
For example, muscrinic receptors are specific for acetycholine and adrenergic receptors are specific for adrenaline/nor adrenaline.
It is important to know the specificity so that the body remains in a state of balance.
The answer is LDL (Low Density Lipoprotein)
Arteriosclerosis is the build up of cholesrol on the inner walls of the arteries. In the long run, arteriosclerosis reduces the diameter of the blood vessels, causing high blood pressure.
The endothelial cells of arteries have receptors that facilitate binding and transportation of the LDL hence facilitation of their accumulation in the blood vessels.
Answer:
Hypochlorhydria is a condition in which the quantity of stomach acids is reduced. When severe forms of hypochlorhydria arise, then it leads to a condition termed as Achlorhydria. The stomach stops producing hydrochloric acid at all in such a condition.
The effects of Achlorhydria would be devastating on the body. It will
- weaken or entirely stop the digestive process.
- impair the gastrointestinal system.
- stop the proper digestion of proteins.
- cause gastrointestinal infections to occur which would entirely damage the digestive system.
- lead to iron deficiency
Answer:
Happy cats blink eyes, keep whiskers forward and tail relaxed; Aggressive Cat lowers tail and make it stiff, crouches etc; an Angry cat is rigid and curls itself around its body and a Depressed cat sleeps more than usual.
Explanation:
A Veterinary assistant must be well aware about different body languages of cat. Cats show different body postures in different moods.
i) HAPPY CAT- A happy cat returns our gaze with a blink an eye and there will be a dilation in the eye that indicates happiness and tail will be relaxed.
ii) AGGRESSIVE CAT- An aggressive cat can both be defensive and offensive. Offensive body language includes- stiff and straight leg, lowered stiff tail and a defensive language includes- Crouching of body and eyes completely dilated.
iii) ANGRY CAT- Angry cat has a rigid posture, growls and make its body curled up and make itself look large.
iv) DEPRESSED CAT- Depressed cats hold its ear back and make their fur stand at the end, they tuck their tail and sleeps more than usual.
The correct answer is nucleus
