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BabaBlast [244]
3 years ago
10

Pleeeeeasssssee heeelp asap The image is attached

Biology
1 answer:
MArishka [77]3 years ago
4 0
The answer is B. Grassland
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Which element has a complete valence electron shell?
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Argon

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The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table. destinymitchell966

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Which set of atoms can be found in all carbon based molecule
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Carbon Atoms

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1. Binary fission
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Α-adrenergic receptors have a higher affinity for norepinephrine than for epinephrine. Β-adrenergic receptors have a higher affi
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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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Explain how the chemical properties of water affect the solubility of inorganic and organic molecules and how is this so importa
Delvig [45]

Explanation:

Water molecules are polar, meaning they have dipole polarities. The Hydrogen end is partially positive while the Oxygen end is partially negative. This is due to the fact that oxygen has a higher atomic mass and hence attracts most of the electron cloud of the molecule towards its end.

This property of water is very important because it is able to dissolve polar molecules while non-polar molecules do not dissolve. This is an important property in the body of organisms because, for example, water helps in the folding of proteins (by interacting with polar motifs of a protein) hence ensuring the protein maintains their functional structural forms.

Water also dissolves significant polar molecules that are utilized by the body, such as glucose, and helps in their transportation within the body. Water is also significant in the diffusion of hormones used in cell signaling, e.t.c.  

Water is also able to dissociate ionic compounds, such as sodium chloride, that are important in the osmotic pressure homeostasis of cells.

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