Actin filament - Study guides, Class notes & Summaries

e. All of the choices are correct except for myosin correct answers 9. The thin filament in skeletal muscle contains _____ molecules. a. actin b. myosin c. troponin d. tropomyosin e. All of the choices are correct except for myosin a. actin, myosin correct answers 9. Cross-bridges form between _____ and _____ during muscular contraction. a. actin, myosin b. actin, tropomyosin c. myosin, troponin d. myosin, tropomyosin e. troponin, calmodulin b. initiate changes in protein con...

Muscle fatigue is caused by ________. a) buildup of ATP and lactic acid levels b) exhaustion of energy reserves and buildup of lactic acid levels c) buildup of ATP and pyruvic acid levels d) exhaustion of energy reserves and buildup of pyruvic acid levels - ️️b) exhaustion of energy reserves and buildup of lactic acid levels The correct order for the smallest to the largest unit of organization in muscle tissue is ________. a) fascicle, filament, muscle fiber, myofibril b) filament,...

roponin - Answer a protein that is situated at regular intervals along the actin filament and has a high affinity for calcium ions tropomyosin - Answer funs along the length of the actin filament in the groove of the double helix acetylcholine - Answer diffuses across the neuromuscular junction, causing excitation of the sarcolemma

1-5 days - - - - menstruation lasts how many days 1) bone formation 2) normal blood clotting 3) transmission of nerve impulses 4) maintenance of skeletal and cardiac muscle contractions - - - - List important processes that require calcium 1) mucosa 2) solomucosa 3) muscularis 4) serosa - - - - Layers of the wall of the alimentary canal from inside out. 14 - - - - ovulation occurs what what day of your cycle ACH - - - - The neurotransmitter released at the neuromuscular junction acro...

BPK 105 Exam Questions and Answers 2024/2025 | A+ GRADED 100% VERIFIED What is actin? Actin is a thin protein filament in muscle fibers that works with myosin for muscle contraction. What is myosin? Myosin is a thick protein filament in muscle fibers that interacts with actin to cause muscle contraction. What is a sarcomere? A sarcomere is the basic contracting unit in a muscle fiber, made of actin and myosin. What is troponin? Troponin is a protein on actin filaments; it binds calcium a...

WVU Biology 102 Exam 5 Questions and Answers Already Passed What are the functional units of the nervous system? neurons Basic structure / function of the neuron - dendrites, cell body and axon. Dendrites- receive impulses from the synapses of other Axon- place along which the message is sent. Long rope like object. Myelin Sheath- cover around the Axon, increases the speed of the message sent. What happens during an "action potential"? Sodium (Na) start out and then rushes in- ...

What structure runs from Z line to Z line? Sarcomere The movement of the troponin-tropomyosin complex requires _______ Ca2+. The actin filament is a polymer formed from 300 to 400 globular subunits called ______ Gactin. A myofilament is the _________. Protein strand composed of actin or myosin T tubules ________. Conduct action potentials deep into the muscle cell A drug that interferes with the active transport of calcium ions from the sarcoplasm back into the sarcoplasmic reticulum would...

what does the SR store - proteins and calcium what is the role of the transverse tubules in the muscle fiber - allow inside of muscle to communicate with the outside of the muscle how is a sarcomere measured - from z-disc to z-disc what is contained in the I band of the sarcomere & what color is the band - thin filaments titin z-disc light (isotropic) what is contained in the A band of the sarcomere & what color is the band - thick filaments thin filaments dark (scatters lig...

What are the three main components of the cytoskeleton and what are their main functions? correct answers Microfilaments: movement microtubules: transport of cellular materials intermediate: support What are the main similarities and differences between the three components of the cytoskeleton? correct answers all are important for cytoskeleton structure differ in size Describe how the assembly of actin filaments is regulated. Include both the role of associated protein and monomer co...

Phosphatase correct answers This myosin-actin interaction forms the basis of the cross-bridge cycle (CBC), which causes muscle contraction, as in skeletal -bridge cycling (CBC) requires phosphorylation of the myosin light chain (LC20). A .............. is an enzyme that removes a phosphate group from its substrate composed of actin and are dynamic and are lengthen by polymerization or shortened by depolarization correct answers microfilaments are provide strucule support for the cell ...