Lactase refers to an enzyme that can dissociate lactose sugar into glucose and galactose. This enzyme plays an important role in the digestion of milk that comprises high lactose sugar. In case, if a mutation occurs in the gene codon of lactase, then two possibilities can take place. These are as follows:
1. Loss of mutation: In this case, the person becomes lactose intolerant because of mutation in lactase gene codon. Due to this, there is low mRNA expression and thus low production of the enzyme lactase. This is also known as lactase non-persistent phenotype.
2. Gain in mutation: In this case, the person gain an increase in mRNA expression of the lactase gene, thus more production of lactase takes place than usual. This kind of individual exhibits lactase persistent phenotype.
The right answer is D. renal regulation.
Among the many factors that modulate tension (vessels, heart strength, blood volume ...), the kidney plays a vital role because it makes an enzyme called renin that helps increase blood pressure and it regulates the outflow of sodium and water, which contribute to the elevation or diminution of blood pressure in the arteries.
What happens to the population density and competition if the birth rate decreases?
The birth rate would increase is the population density competition increased.
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Clean coal technologies, such as advanced coal-fired power generation and carbon capture and storage, can allow the world's coal resource to be used in ways that are compatible with environmental and climate goals. The correct option is C.
<h3>What is coal capture and storage?</h3>
Carbon capture and storage (CCS) is the process of capturing carbon dioxide (CO2) before it enters the atmosphere, transporting it, and storing it for centuries or millennia (carbon sequestration).
Clean coal technologies, such as advanced coal-fired power generation and carbon capture and storage, can allow the world's coal resource to be used in ways that are compatible with environmental and climate goals.
Thus, the correct option is C.
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