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Kaylis [27]
3 years ago
15

The native structure of proteins has only marginal

Biology
1 answer:
krok68 [10]3 years ago
4 0

Answer:

Three treatments or reagents that causes protein denaturation are "heat", "urea" and "sodium hydroxide".

Explanation:

Heat: when a protein is exposed to elevated temperatures its molecules vibrate so rapidly and violently that its bonds are disrupted. This causes that the protein loses its tertiary and secondary structures and finally causes its denaturation.

Urea: a chemical denaturing agents that denatures proteins by lower the protein melting temperature which has a similar effect that high temperature. Urea compets for hydrogen bond donors and acceptors which affects the protein stability.

Sodium hydroxide: sodium hydroxide is an alkali agent that increases the pH value of the protein's solution. This results in removing hydrogen-bond contributing protons of the protein, which breaks its hydrogen bonds and causes its denaturation.

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Answer:

a video that shows penguin species that have different mating dances

Explanation:

The question is incomplete as it does not have the options which are:

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Answer:

a video that shows penguin species that have different mating dances

<em><u>The reproductive isolation is the factor which allows the species to evolve and form a new species, therefore, this factor is used to describe a species.</u></em>

<em><u /></em>

<em><u>The reproductive isolation refers to a mechanism in which the species are isolated to not interbreed with the individual of other species. The reproductive isolation could be due to behavioural, psychological, physical or genetic differences. evolved as an adaptation.</u></em>

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<em><u>In the given cases, the penguin species which shows different mating dances is considered to be reproductively isolated as the different dance rituals evolved as behaviour to prevent them from mating.</u></em>

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<em><u>Thus, the selected option is correct.</u></em>

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5 0
2 years ago
What part of a plant cell has the function of producing sugar in the presence of sunlight??
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B

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Over a period of 41,000 years, Earth’s axis spends a small portion of that time tilted at 0 degrees.
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