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Crank
3 years ago
5

Population density is the number of individuals per unit area.

Biology
1 answer:
NemiM [27]3 years ago
3 0

Answer:

Explanation:

The population density of an area is a demographic tool used to measure the number of organisms or individuals in a particular area.

 It is expressed as;

    Population density  = \frac{number of organisms}{area of the place}  

The unit is expressed as organisms/km²

An area with a high population density is often not desirable as it can lead to pressure on amenities and infrastructure.

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Which action should the nurse implement when implementing a physical assessment of an older client?
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Dr. Budai want to build a hotel that a new species has been discovered to be living.
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One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water
bezimeni [28]

Answer:

(a) (Glu)zo or(Phe-Met)3 at pH 7.0

O (Glu)zo ✔

O (Phe-Met)s ❌

(b) (Gly) zo or (Lys-Ala)3 at pH 7.0:

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(c) (Ala-Asp-Gly)s or (Asn-Ser-His)s at pH 3.0:

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O (Asn-Ser-Hish)s ✔

Explanation:

Polypeptides that has polar or charged side chains are more soluble than polypeptides with nonpolar side chains.

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(Glu)20 is negatively charged at pH 7 and more soluble

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(c) At pH 6.0

(Asn-Ser-His)5 has polar Asn side chains and partially protonated His side chains and it's more soluble unlike the (Ala-Asp-Gly)s at that pH.

(d) At pH 3.0

(Asn-Ser-His)s as partially protonated carboxylate groups of Asp residues and it is also neutral but the imidazole groups of His residues are fully protonated and positively charged. Hence it's more soluble than the (Ala-Ser-Gly)s at that particular pH.

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