Question

The enzyme which converts glucose to glucose- 6- phosphate is
(a)Phosphorylase
(b)Glucose- 6-phosphate
(c)Hexokinase
(d)Glucose synthase

Answer 1

The proteins which act as biocatalysts are known as enzymes that convert the substrates into different molecules known as the products. They are required in all metabolic processes for their fast rates.

Complete answer:
Hexokinase is the enzyme that converts glucose to glucose- 6-phosphate. The most important substrate for hexokinase is glucose and glucose 6 phosphate that are the most important products. They possess the ability to transfer and inorganic phosphate groups from the ATP to a substrate. The specific isoform of hexokinase is glucokinase which is often confused with hexokinase. They are capable of phosphorylating certain hexoses that can act with 50 fold lower substrate affinity and the main hexose substrate which is glucose. In every domain of life the gene is discovered which encodes hexokinase and exists among a huge variety of species which ranges from bacteria, yeast, plants, and other vertebrates to humans. The actin fold proteins share a common ATP binding site which is surrounded by more variable sequences that determine the substrate affinities and other properties. Some hexokinases provide different functions that occur in a single species of hexokinase isoforms or isozymes.

Additional Information: Phosphorylase: They are the enzymes that catalyze the addition of a phosphate group from inorganic phosphate and include allosteric enzymes that catalyse the production of glucose- 1- phosphate from glucans such as starch, glycogen, and maltodextrin. It is a more active R form of glycogen which gets derived from the phosphorylation of a less active R form which is known as Phosphorus b that is associated with AMP.
Glucose-6-phosphate: It is a glucose sugar that is present at the hydroxyl group of carbon 6 and is common in cells which constitutes the majority of glucose entering a cell and becomes phosphorylated. The line between the glycolysis and pentose phosphate pathway which is the metabolic pathways. They can be converted to glycogen or starch for storage in the liver and muscles in the form of glycogen for certain multicellular animals.
Glucose synthase: It is an enzyme that is important in glycogenesis and the conversion of glucose into glycogen which is catalyzed by the reaction of glycosyltransferase.
So, the correct answer is 'Hexokinase'.

Note: The well-known molecule which is an essential nutrient for human health is glucose and is known for its energy production in animals and the sugar which exists in plants. Certain chemical reactions that involve glucose-6-phosphate produce some compounds which prevent reactive oxygen species and form toxic levels within the red blood cells.