Which of the Following Is NOT True of a Myofibril

question 12

Multiple Choice

Which of the following is NOT true of a myofibril?

• A)Thin myofilaments consist of actin, troponin, and tropomyosin.
• B)Elastic filaments are composed of titin.
• C)Thick myofilaments consist of myosin.
• D)Myofibrils are composed of muscle fibers.
• E)All of these are true of myofibrils.

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Definitions:

Fossil Record

The collection of fossils that has been discovered, providing evidence of the history of life and evolutionary processes on Earth.

Reptiles

A group of cold-blooded animals with scaly skin that typically lay eggs on land, such as snakes, lizards, crocodiles, and turtles.

Amphibians

A class of cold-blooded vertebrates that includes frogs, toads, salamanders, and newts, primarily living in moist environments.

Birds

Warm-blooded vertebrates characterized by feathers, beak with no teeth, laying hard-shelled eggs, and a high metabolic rate; members of the class Aves.