Muscle can transform ______ into mechanical energy.
ATP
Kinetic energy
Potential energy
DNA
Myoglobin
The Correct Answer is A
Choice A reason: ATP (adenosine triphosphate) is the primary energy currency of the cell. Muscle cells use ATP to power the contraction process, converting chemical energy into mechanical energy through the interaction of actin and myosin filaments.
Choice B reason: Kinetic energy is the result of movement, not the source of energy for muscle contraction. Muscles generate kinetic energy, but they do not transform it into mechanical energy.
Choice C reason: Potential energy refers to stored energy, such as in a stretched elastic band. While muscles can store potential energy in elastic components, the transformation into mechanical energy is driven by ATP.
Choice D reason: DNA carries genetic information and plays no direct role in energy transformation during muscle contraction.
Choice E reason: Myoglobin stores oxygen in muscle cells but does not provide energy. It supports aerobic metabolism, which ultimately produces ATP, the actual energy source.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: A foramen is a round or oval opening through a bone that allows the passage of nerves and blood vessels. It is a common anatomical feature found in various bones, such as the foramen magnum in the occipital bone or the infraorbital foramen in the maxilla.
Choice B reason: A fossa is a shallow depression in a bone, often serving as an articular surface or a site for muscle attachment. It does not serve as a passageway like a foramen.
Choice C reason: A meatus is a canal-like passageway through a bone, such as the external auditory meatus in the temporal bone. While it is a passage, it is more elongated and tunnel-like than a round or oval opening.
Choice D reason: A sinus is a cavity within a bone, typically filled with air and lined with mucous membrane, such as the paranasal sinuses. It is not an opening for passage but rather a hollow space.
Correct Answer is A
Explanation
Choice A reason: The talus is a tarsal bone in the ankle that articulates with the tibia and fibula. It is not embedded within a tendon and therefore not classified as a sesamoid bone.
Choice B reason: The radius is one of the two long bones in the forearm. It is not a sesamoid bone, as it is not formed within a tendon.
Choice C reason: The femur is the longest and strongest bone in the body, located in the thigh. It is a long bone, not a sesamoid bone.
Choice D reason: The hamate is a carpal bone in the wrist. It is not embedded in a tendon and thus not a sesamoid bone.
Choice E reason: The patella, or kneecap, is the most well-known example of a sesamoid bone. It is embedded within the quadriceps tendon and functions to protect the knee joint and improve leverage during leg extension.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.