[ANIMAL PHYSIOLOGY] The glycolytic system by which muscles obtain ATP. Select one: O a. relies on creatine phosphate. O b. is also referred to as the immediate system. O c. occurs in the sarcoplasm of the muscle cell. O d. completely metabolizes carbohydrates and fats into CO2 and H20. e. is the most efficient means of producing ATP.
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The glycolytic system by which muscles obtain ATP…
![[ANIMAL PHYSIOLOGY] The glycolytic system by which muscles obtain ATP.
Select one:
a. relies on creatine phosphate.
b. is also referred to as the immediate system.
c. occurs in the sarcoplasm of the muscle cell.
O d. completely metabolizes carbohydrates and fats into CO2 and H20.
e. is the most efficient means of producing ATP.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F40cbeb66-d88d-4e01-b4b5-1176e5b78ecf%2Fcbbb62a8-ec9e-42e0-861c-36fdc95a740c%2Fwsp7wv_processed.jpeg&w=3840&q=75)
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- A fatigued muscle lacks sufficient oxygen for the aerobic respiration to supply needed ATP. The accumulation of Select one: a. acetic acid occurs and contractions occur with less strength b. lactic acid (lactate) occurs and muscle cramps may set in c. pyruvate occurs and muscle cramps set in d. ethyl alcohol occurs and less frequent contractions occurWhich of the following statements about smooth muscle is correct: Select one: O a. Endothelial secretion of NO results in relaxation of blood vessel wall smooth muscle O b. Its activity is not affected by nervous system c. In smooth muscle cells myosin is deactivated by myosin light chain kinase O d. Its contraction is weaker than the contraction of skeletal muscleWhich of the following statements about skeletal muscle is CORRECT? Select one: a. An increase in Na+ concentration in the cytosol starts muscle filament sliding. b. The muscle is non-striated and involuntary. c. The muscle is involved in shivering thermogenesis. d. The muscle contracts in response to parasympathetic stimulation. e. The muscle contracts in response to hormones.
- Fast-twitch muscle fibers have which of the following characteristics?a. fewer number of mitochondriab. rely on fermentation and creatine phosphate pathwaysc. are primarily anaerobicd. provide for a quick release of energye. All of these are correct.Which of the following is false regarding smooth muscle? A. It contracts slower than skeletal muscle. B. It is multinucleated. C. It maintains contraction longer while using less energy than skeletal muscle. D. It is smaller than skeletal muscle. E. All the above are true. Select one: O A B OD O EThe energy for muscle contraction is most directly obtained from a.phosphocreatine. b.ATP. c.anaerobic respiration. d.aerobic respiration.
- The functions of tropomyosin in skeletal muscle include A. releasing calcium ions after initiation of contraction. B. generating ATP which it passes to the contractile mechanism. C. binding to myosin during contraction. D. acting as a relaxing protein at rest by covering up the sites where myosin binds to actin. E. sliding on actin to produce shortening.During muscle contraction, some energy is supplied from creatine phosphate. Which of the following events occurs during the breakdown of creatine phosphate? Question 6 options: a ATP molecules breakdown producing ADP + P groups. b ATP molecules are formed when P groups are bonded to ADP. c ADP molecules break down producing AMP + P groups. d ADP molecules are formed when P groups are bonded to AMPIn muscle cells, myosin molecules continue moving along actin molecules as long as: A. ATP is present and intracellular Ca2+ is high. B. ADP is present and intracellular acetylcholine is high. C. ATP is present and troponin is not bound to Ca2+. D.ATP is present and intracellular Ca2+ is low. E. ADP is present and tropomyosin is released from intracellular stores. QUESTION 27 Lamellipodia and filopodia frequently occur near the edges of cells. These membrane features: A. are supported by intermediate filaments, such as keratin. B. result from the polymerization of actin filaments. C. result from the contraction of actin-myosin. D. probably do not serve any useful purpose to the cell. E. are directly linked to the microtubule organizing center. QUESTION 28 Sort the following events to reflect the sequence during smooth muscle contraction upon delivery of muscle stimu 3. Activation of the myosin light-chain kinase 5. Interaction of myosin head with actin 4. Phosphorylation of myosin 1.…
- During muscle isometric tension, the maximum tension occurs when: There is no overlapping between the actin and myosin O a. O b. None of these The myosin and actin overlap without crossing the center O d. The myosin and actin totally overlap Dilatant flow is characterized as a reverse phenomenon of: a. Newtonian flow O b. Plastic flow O c. Pseudoplastic flow O d. RheopexyUnder what conditions will lactic acid accumulate in skeletal muscle? Select one: A. When NADH is depleted. B. When O2 is depleted. C. When ATP is depleted. D. When citric acid enzymes are depleted.what does paying back the oxygen debt after muscle activity involve ? b. storing gylcogen in the blood as glucose molecus are stoned in this tissue c. reconcertig latic acid to pyruvic acid & replenishing ATP and gylogen stores . d. breaking down lipid molecusles to replenish the amount of avaible atp
