Write the difference between Actin and Myosin.

Choose the best description of how myosin and actin are arranged within the two types of protein filaments in myofibrils. a.) Actin makes up the think filaments, and myosin makes up the thin filaments. b.) Myosin makes up the think filaments, and actin makes up the thin filaments. c.) Myosin and actin are randomly interspersed in the think filaments but are absent from the thin filaments. d.) Myosin and actin overlap with each other to make up both the think and thin filaments.

Describe the protein structures involved in muscle contraction.

What is the monomoric form of actin referred to as?   a. F-actin   b. G-actin   c. M-actin   d. R-actin

With examples, describe how motor proteins move cell parts.

First, explain how resting membrane potential is established in terms of ion concentration and electric charge. Next, explain the process of neural signal transmission from an alpha motor neuron to the muscle fiber. Do this by explaining how an AP is generated (ions and membrane proteins) at the neuron, how the signal is propagated, what happens at the axon terminal, what happens at the motor endplate, and explain all the molecular events that occur to cause muscle contraction.

Which of the following regions of a sarcomere at rest is characterized by the presence of myosin only? a) A band b) H zone c) I band d) Z line

Place these structures in order from LARGEST structure to SMALLEST: A) Myofibril  B) Myofilament (MYOSIN) 1 C) Muscle Body D) Muscle Bundle (Fascicle) E) Muscle Fiber F) Myofilament (ACTIN)

Please describe the connection between neurotransmitters and sarcomeres

Would you expect to find motor proteins that move along intermediate filaments? Explain why or why not.