#Question id: 2515
#Unit 2. Cellular Organization
Which of the following cell types would be the best source of actin?
#Question id: 2516
#Unit 2. Cellular Organization
Which of the following is essential for treadmilling to occur down the length of an actin filament?
#Question id: 2517
#Unit 2. Cellular Organization
Which types of cell motility can occur in the presence of actin alone (without myosin)?
#Question id: 2518
#Unit 2. Cellular Organization
In an analogy between skeletal muscle motility and a railroad, if actin is the railroad tracks and ATP is the diesel fuel, what is the locomotive?
#Question id: 2519
#Unit 2. Cellular Organization
If you compared under the microscope a contracted sarcomere to a relaxed sarcomere, which of the following regions would not differ in width?
#Question id: 2520
#Unit 2. Cellular Organization
During the course of a muscle twitch (a contraction due to a single action potential), when is the free calcium concentration of the muscle cytoplasm highest?