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.
Answer: Major grain crops are corn, wheat, barley, oats, rye, rice, sorghum, and soybeans. Less than 10 percent of the corn grown in the U.S. is for human consumption. Legume plants such as dry beans and peas are important foods in the diet of many Americans and people around the world.
Explanation:
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Part of all organic compounds
Carbon is the main component of organic compounds infact it is the part of definition of organic compounds that they are carbon based such as alcohols, carboxylic acid, glucose and sucrose
Component of bones and found in cell membranes
Phosphorus, in the form of phosphate is an important component of cellular membrane,bones and other high-energy nucleic acids and phosphate compounds. Therefore it has an important role in as extracellular and intracellular constituent.
Important component of proteins, like carbon
Proteins play a major role in our body i form of enzymes which are an integral part of all the chemical reactions occurring in the body. An important component of every protein of the world is Nitrogen because it is a part of basic structure of amino acids.
Universal solvent
Water is a universal solvent as it can dissolve almost anything.
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D. Omnivore, predator, and heterotroph.
It eats plants and animals.
It hunts.
It doesn't make its own food.
Answer:
C. Platelet adhesion
Explanation:
Platelet adhesion comes first in the process of hemostasis.
The process of hemostasis has got three phases:
- Vascular spasm
- Platelet plug formation
- Blood coagulation
The process occurs in the body in the event of a bleeding injury.
In the first phase, damaged blood vessels constrict to prevent more bleeding.
In the second phase, platelets adhere to damaged endothelium to form platelet plug.
In the third phase, fibrinogen is converted to fibrin to form a clot.
