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s344n2d4d5 [400]
3 years ago
12

Α-adrenergic receptors have a higher affinity for norepinephrine than for epinephrine. Β-adrenergic receptors have a higher affi

nity for epinephrine than for norepinephrine. Which concept about receptor function do these statements reflect?
Biology
1 answer:
Molodets [167]3 years ago
6 0

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.

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Drag labels to the appropriate locations in this diagram.
Vinil7 [7]

Answer:

c = Enzymatic activity

e = Attachment to ECM and cytoskeleton

f = Signal reception and relay

g = Transport

h = Intercellular junctions

i = Cell-cell recognition

a = Phospholipid bilayer

b = Fibers of extracellular matrix (ECM)

d = Microfilaments of cytoskeletons

Explanation:

c) Enzymatic activity is an indication of the amount of active enzymes present to increase a reaction rate

e) Attachment to ECM and cytoskeleton is enabled by integrins that take signals from the ECM and control signaling pathways of the cell

f) Signal reception and relay is the transduction of signal

g) Transport is the movement of matter in and out of the cell through the cell membrane

h) Intercellular junctions are the contact regions between adjacent cells and plasma membrane

i) Cell-cell recognition is power of the cell to decipher the different neighboring cells in the cell's environment

a) Phospholipid bilayer consists of a hydrophobic interior and a hydrophilic exterior

b) Fibers of extracellular matrix (ECM) are ECM associated the cell

d) Microfilaments of cytoskeletons consist of actin and aid in cellular movement.

5 0
2 years ago
explain how the human body regulate the blood glucose levels after a breakfast of maize meal porridge​
almond37 [142]

Answer:

Normally, blood glucose levels increase after you eat a meal. When blood sugar rises, cells in the pancreas release insulin, causing the body to absorb glucose from the blood and lowering the blood sugar level to normal.

Explanation:

5 0
3 years ago
Do all fishes have swim bladder? Justify your answer?<br><br> Give a small answer please
muminat

Answer:

Explanation:

Most fish rise and sink using this method, but not all do. Some species don't need a swim bladder because they spend all their life skimming along the ocean floor. Other fish, such as rays and sharks, ascend and descend by propelling themselves forward.

6 0
3 years ago
Read 2 more answers
Select the correct answer.
ira [324]

Answer:

A: follice-stimulating hormone

7 0
3 years ago
Read 2 more answers
What do I put in the chart? Picture attached
wolverine [178]

Answer:

The woman's genotype - Bb

The man's genotype - bb

Chances of having a child with blue eyes - 50%

Chances of having a child with brown eyes - 50%

Explanation:

Many of our traits are determined by our genetics. We inherit genetic information from both of our parents. From each of them, we get one copy of a gene that determines a certain trait. These gene copies are called alleles.

The dominant allele is the one that masks the effect of the other type of allele, called the recessive allele. This means that a person needs to have only one dominant allele in order for its effect to be expressed. In order for the effect of the recessive allele to be expressed, the person needs to have two recessive alleles.

If a man has blue eyes, which is a recessive trait, he needs to have two recessive alleles (bb). This is why the genotype of the man is bb.

If his child has blue eyes, this means that its genotype is bb as well. The mother's eyes are brown, which means that she needs to have at least one recessive allele. Based on this, we can conclude that her genotype is Bb.

Since the mother has one dominant allele, this means that her children could have brown eyes as well. This is what the Punnett square would look like:

    B       b

b   Bb    bb

b   Bb    bb

Two out of four children would have brown eyes, and the other two would have blue eyes. This means that their chances of them having a child with blue eyes are 50%. The chances of them having a child with brown eyes are the same.

5 0
3 years ago
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