Which Represents the Correct Ordering from Lowest Number to Highest

question 241

Multiple Choice

Which represents the correct ordering from lowest number to highest number of molecules in a liver cell activated by a single molecule of epinephrine?

• A) cAMP, protein kinase A, phosphorylase kinase, glycogen phosphorylase
• B) Glycogen phosphorylase, phosphorylase kinase, protein kinase A, cAMP
• C) cAMP, phosphorylase kinase, glycogen phosphorylase, protein kinase A
• D) Glycogen phosphorylase, cAMP, protein kinase A, phosphorylase kinase
• E) Phosphorylase kinase, glycogen phosphorylase, cAMP, protein kinase A

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Definitions:

Peroxisomes

In eukaryotic cells, membrane-enclosed organelles containing enzymes that produce or degrade hydrogen peroxide.

Mitochondria

Organelles within eukaryotic cells that produce energy through the process of cellular respiration, often referred to as the powerhouse of the cell.

Chloroplasts

Membranous organelles that are the sites of photosynthesis in eukaryotes; occur in some plant and algal cells.

Vacuole

(vacuole) A fluid-filled, membrane-enclosed sac found within the cytoplasm; may function in storage, digestion, or water elimination.