Podcast
Questions and Answers
What type of fibers are predominant in the drumstick of a chicken or turkey?
What type of fibers are predominant in the drumstick of a chicken or turkey?
- Cardiac fibers
- Slow twitch fibers (correct)
- Intermediate twitch fibers
- Fast twitch fibers
What acts as the regulatory subunit for myosin light chain kinase in muscle cells?
What acts as the regulatory subunit for myosin light chain kinase in muscle cells?
- Collagen
- Calmodulin (correct)
- Troponin
- Myoglobin
What type of enzyme is myosin light chain kinase?
What type of enzyme is myosin light chain kinase?
- Hydrolase enzyme
- Phosphatase enzyme
- Kinase enzyme (correct)
- Ligase enzyme
What is the role of myosin light chain phosphorylation in muscle contraction?
What is the role of myosin light chain phosphorylation in muscle contraction?
What do all kinases have in common in terms of their enzymatic activity?
What do all kinases have in common in terms of their enzymatic activity?
Where are the thin filaments attached in muscle cells that lack Z-lines?
Where are the thin filaments attached in muscle cells that lack Z-lines?
What type of muscle fibers are most fuel-efficient and tend to be weaker?
What type of muscle fibers are most fuel-efficient and tend to be weaker?
Which type of muscle fibers are important for power and endurance, suitable for mile track runners?
Which type of muscle fibers are important for power and endurance, suitable for mile track runners?
What is the main function of creatine phosphate in muscle cells?
What is the main function of creatine phosphate in muscle cells?
Which process results in a lower ATP yield but is faster and anaerobic?
Which process results in a lower ATP yield but is faster and anaerobic?
What is the function of myoglobin in muscle cells?
What is the function of myoglobin in muscle cells?
Which type of muscle fibers are the most powerful but the least efficient in fuel utilization?
Which type of muscle fibers are the most powerful but the least efficient in fuel utilization?
What is the term used to describe the rigid cross-linking of thick filaments to thin filaments in muscles?
What is the term used to describe the rigid cross-linking of thick filaments to thin filaments in muscles?
What initiates the binding step in muscle contraction that is calcium dependent?
What initiates the binding step in muscle contraction that is calcium dependent?
What causes the displacement of the Myosin head during muscle contraction?
What causes the displacement of the Myosin head during muscle contraction?
Which process re-energizes the Myosin head during muscle contraction?
Which process re-energizes the Myosin head during muscle contraction?
In muscle cells, what triggers the activation of contraction in response to neuromuscular transmission?
In muscle cells, what triggers the activation of contraction in response to neuromuscular transmission?
What event causes an excitatory end-plate potential leading to an action potential in the muscle membrane?
What event causes an excitatory end-plate potential leading to an action potential in the muscle membrane?
