Myosin ii molecule - Study guides, Class notes & Summaries

BIO 353 Exam #4 Worksheets Practice Questions and Answers Which of the following statements about actin is false? - Ans:-The dynamic instability of actin filaments is important for cell movement The hydrolysis of bound ATP to ADP in actin filament ________ the strength of binding between monomers in the filament. - Ans:-Decreases Actin at the cell cortex helps govern the shape of the plasma membrane. - Ans:-True Actin filaments are nucleated at the site of existing actin filaments in lame...

Muscle movement on the cellular level is initiated by the release of Ca2+ from the terminal cisternae. Terminal cisternae are associated with A. sarcoplasmic reticulum. B. myosin cross-bridges. C. myoglobin. D. canaliculi. E. thin filaments. - correct answer A Muscle fibers store Ca++ in the sarcoplasmic reticulum for release during contraction. The sarcoplasmic reticulum, analogous to the endoplasmic reticulum, runs extensively throughout the fiber so that released Ca++ will come ...

Which of the following lists the valves in the order through which the blood flows from the vena cava through the heart? Tricuspid, pulmonary semilunar, bicuspid (mitral), aortic semilunar Which chamber initially receives blood from the systemic circuit? right atrium In which septum is it normal to find openings in the adult? atrioventricular septum Which portion of the ECG (EKG) corresponds to repolarization of the atria? atrial repolarization is masked by ventricular depolarization The...

What is in Whole Blood? contains -plasma 55% of whole blood -formed elements 45% of whole blood What are the Formed Elements of Blood? *also know as the Hematocrit -WBC (White Blood Cells) -RBC (Red Blood Cells) -Platelets Brainpower Read More What tissue type is Whole Blood and Why? Fluid Connective Tissue -Originates from Mesoderm -Contains non-living matrix (plasma) -Contains fibers (clotting factor) What are the functions of Blood? -Transportation (nutrients and gases) ...

BIO 353 (CELL BIOLOGY) EXAM 1 STUDY REVISION QUESTIONS AND ANSWERS ARIZONA STATE UNIVERSITY

Bio 353 Exam 1 – ASU Study Guide with Complete Solutions Actin filaments: - Ans:-have a diameter of 7 nm and contain 375 amino acids Actin filaments will - Ans:-two of the above: undergo treadmilling in a living cell. and never reach equilibrium The number of amino acids in an actin monomer is - Ans:-375 Hydrolysis of ATP to ADP - Ans:-helps identify the assembly vs the disassembly end Actin filaments associate with a nucleotide triphosphate. - Ans:-true Treadmilling of actin filaments...

1 MCAT - BIO/BIOCHEM EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ defunct mRNA translation in bacteria would... Correct Answer: prevent cells from replicating. lysogenic cycle Correct Answer: a viral reproductive cycle in which the viral DNA is added to the host cell's DNA and is copied along with the host cell's DNA Lytic phase or lytic cycle Correct Answer: phage replicates immediately, destroying the host cell (All phages carry out this life cycle) prote...

ASU BIO 353 Exam 2 Study Guide Actin Filaments - Ans:-have a diameter of 7 nm and contain 375 amino acids. Actin filaments will - Ans:-two of the above The number of amino acids in an actin monomer is - Ans:-375 Hydrolysis of ATP to ADP - Ans:-helps identify the assembly vs the disassembly end Actin filaments associate with a nucleotide triphosphate - Ans:-True Treadmilling of actin filaments only occurs in a test tube. - Ans:-False Preassembled nucleation sites in a living cell are equiv...

DAT Biology Practice Exam Which of the following does not occur during telophase? A. Reassembly of the nuclear envelope B. Reappearance of the nucleoli C. Uncoiling of the chromosomes D. Centromere division E. Dismantling of the spindles - ANS D. Centromere Division Explanation: Centromere division occurs during anaphase of mitosis and during anaphase II of meiosis Enzymes which catalyze the phosphorylation of organic molecules are called A. Lipases B. Kinases C. Mu...

BIO353: Exam 2 Short AnswersModule 11: Actin Filaments 1.Draw an actin monomer and an actin filament and label all the parts, molecular weights,etc..2.Explain the geography of actin filaments. Explain the geography of stress cable, filapodiaand lamelliapodia in a cell, and locomoting in a culture plate.a.Actin filaments are located under the plasma membrane on the inside of the cell. Stresscables as well as filopodia and lamellipodia are located near the plasma membrane. 3.Focusing on actin mo...