Question

question
the first enzyme in glycolysis _.
answer
transfers electrons from the carbon molecule to nad+
isomerizes the 6 - carbon ring so it is a symmetrical molecule
adds a phosphate from atp to the carbon ring
splits the 6 - carbon ring into two 3 - carbon rings
i dont know yet

Explanation:

Glycolysis begins with the enzyme hexokinase (in most tissues; glucokinase in liver). Its role is to add a phosphate group from ATP to glucose (a 6 - carbon molecule). This reaction is the first step in glycolysis. The other options:

• Transferring electrons to \(NAD^{+}\) occurs later in glycolysis (e.g., in the reaction catalyzed by glyceraldehyde - 3 - phosphate dehydrogenase).
• Isomerization (e.g., of glucose - 6 - phosphate to fructose - 6 - phosphate by phosphoglucose isomerase) is not the first step.
• Splitting the 6 - carbon ring (by aldolase) is also not the first step.

Answer:

adds a phosphate from ATP to the carbon ring