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deff fn [24]
3 years ago
13

How is the atomic mass of an atom calculated?

Biology
1 answer:
Stella [2.4K]3 years ago
6 0

Answer:

Protons + Neutrons = Atomic Mass

Explanation:

Each Proton and Neutron weigh one  (amu) adding all the protons and neutrons together gives you the atomic mass. (Electrons count as the .0 and don't play much part. Just round to the nearest number.)

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Based on the definitions of pharmacophore and privileged structure, outline essential structural features a 1,4-dihyrdopyridine
stiv31 [10]

Answer:

Explanation:

Pharmacophore (pharmacology) - The molecular framework responsible for a drug's biological activity. According to IUPAC — A pharmacophore is the ensemble of steric and electronic features that is necessary to ensure the optimal supramolecular interactions with a specific biological target structure and to trigger (or to block) its biological response.

Privileged structures are defined as molecular frameworks which are able of providing useful ligands for more than one type of receptor or enzyme target by judicious structural modifications.

1) The 1,4-dihydropyridine ring is present in many biologically important molecules that acts as an important scaffold for cardiovascular drug - a calcium antagonists and although it is technically not considered as a pharmacophore, it is considered as a privileged structure.

1,4-Dihydropyridine (DHP), belongs to the class of calcium antagonist that inhibits the influx of extracellular Ca+2 through the L-type voltage-dependent calcium channels.

A positional substitution in the 4-position is feasible in the heterocyclic ring which in turn culminates in various calcium channel antagonist activities and this heterocyclic ring is the common feature for various pharmacological activities such as anti-inflammatory activity, analgesic activity,

antihypertensive, antianginal, antitumor, antitubercular activity and antithrombotic .

Position on the heterocyclic ring binds to the L-type channel and also to N-type channel on membranes.

2.) The bioisosteres are not a suitable bioisostere for the traditional C-4 aryl or heteroaryl substitution which is necessary for calcium ion blockage thereby inhibiting it to function with the mechanism shared above.

6 0
3 years ago
What will be the long-term consequences if the hunts of baby deer continue? If they stop?
grin007 [14]

Answer:

If people continue to kill baby deer then the population will start to decrease and if they stop killing them then the deer population will increase. If the deer population increase than that won't be a good thing for the environment because they will then be everywhere. Plus where there is prey there is predator so the predators of the deer will also increase in population.

7 0
2 years ago
porque son los micronutrientes indispensables para los diferentes metabolicas de los organismos vivos?
Kipish [7]

Because they are the essential micronutrients for the different metabolites of living organisms?


8 0
3 years ago
it important to know a person's rhesus factor before a blood transfusion? A patient who is Rh+ can receive only Rh– blood. A pat
timofeeve [1]

The right answer is A patient who is Rh– can receive only Rh– blood.

The blood group is not the only thing that matters, it adds a category: rhesus. Rhesus refers to a red blood cell antigen that is on their wall. There are two blood group systems: Rh positive (Rh +) and Rh negative (Rh-).

Rhesus is positive in people who have this antigen. It concerns the majority of the population. Negative rhesus refers to people without the antigen. This rhesus factor is especially useful to know if a blood transfusion is feasible between two people.

The blood transfusions can be "iso-rhesus", that is to say between Rh + and Rh- but only in one sense: Rh- can give to Rh + but Rh + can not give to Rh-. Again because of the presence of antibodies directed against the antigen in Rh- people.

4 0
3 years ago
Read 2 more answers
Which of these elements possesses a<br> magnetic domain?<br> A. lead<br> B. cobalt<br> C. potassium
Paha777 [63]

Answer:

I am pretty sure.. it's option B.

COBALT.

6 0
2 years ago
Read 2 more answers
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