BIO 353 CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS 2026
▶ Actin filaments will. Answer: two of the above: undergo treadmilling in a
living cell. and never reach equilibrium
▶ The number of amino acids in an actin monomer is. Answer: 375
▶ Hydrolysis of ATP to ADP. Answer: helps identify the assembly vs the
disassembly end
▶ Actin filaments associate with a nucleotide triphosphate.. Answer: true
▶ Treadmilling of actin filaments only occurs in a test tube. Answer: false
▶ Preassembled nucleaton sites in a living cell are equivalent to the
intracellular preference for actin filaments. Answer: true
▶ Intracellular preference for actin filaments. Answer: is a way to look at
the geography of the cell and show where the role of actin filaments is
important.
▶ The ability of actin filaments to disassemble into small monomers.
Answer: two of the above
▶ What causes a myosin II molecule to be able to form a bipolar fiber.
Answer: Calcium binding to calmodulin.
▶ The diameter of the actin filament is ...... nm. Answer: 7
▶ Actin filaments will only assemble in parallel bundles. Answer: false
▶ The ability of actin filaments to disassemble into small monomers.
Answer: enables the building blocks of actin filaments to move from one
side of the cell to the other.
AND VERIFIED ANSWERS 2026
▶ Actin filaments will. Answer: two of the above: undergo treadmilling in a
living cell. and never reach equilibrium
▶ The number of amino acids in an actin monomer is. Answer: 375
▶ Hydrolysis of ATP to ADP. Answer: helps identify the assembly vs the
disassembly end
▶ Actin filaments associate with a nucleotide triphosphate.. Answer: true
▶ Treadmilling of actin filaments only occurs in a test tube. Answer: false
▶ Preassembled nucleaton sites in a living cell are equivalent to the
intracellular preference for actin filaments. Answer: true
▶ Intracellular preference for actin filaments. Answer: is a way to look at
the geography of the cell and show where the role of actin filaments is
important.
▶ The ability of actin filaments to disassemble into small monomers.
Answer: two of the above
▶ What causes a myosin II molecule to be able to form a bipolar fiber.
Answer: Calcium binding to calmodulin.
▶ The diameter of the actin filament is ...... nm. Answer: 7
▶ Actin filaments will only assemble in parallel bundles. Answer: false
▶ The ability of actin filaments to disassemble into small monomers.
Answer: enables the building blocks of actin filaments to move from one
side of the cell to the other.
