Glycolysis

Which of the following is not true of glycolysis?

• it is the first stage of cellular respiration

• it occurs in the cytoplasm

• it only occurs if oxygen is present

• means the breakdown of sugar

Which of the following terms means the chemical addition of a phosphoryl group (PO₃^-) to an organic molecule.

• oxidation

• phosphorylation

• reduction

• decarboxylation

Energy is stored in molecules when chemical bonds are broken.

• True

• False

The structure of ATP is most like that of a

• simple sugar

• fatty acid

• amino acid

• nucleotide

In cellular respiration, glucose and oxygen produce carbon dioxide, water, and energy.

• True

• False

Before a molecule of glucose can be broken down to release energy,

• one ATP molecule must be added to glucose

• two phosphate groups must be attached to glucose

• three ATP molecules must be added to glucose

• one ATP molecule must be taken away from glucose

Glycolysis depends upon a continuous supply of glucose and

• NADH

• pyruvate

• NAD+

• H₂O

In the breakdown of glucose, a phosphorylated six-carbon compound is split into two three-carbon compounds called

• PGAL

• 3-PGA

• ATP

• NADH

Which of the following compounds is phosphorylated in glycolysis?

• glucose

• water

• 1,3 DPGA

• PGAL

The conversion of PGAL to pyruvate is accomplished by

• anaerobic respiration

• photophosphorylation

• electron transport

• Krebs cycle

• substrate level phosphorylation