Catastrophism, Meaning the Regular Occurrence of Geological or Meteorological Disturbances

question 51

Multiple Choice

Catastrophism, meaning the regular occurrence of geological or meteorological disturbances (catastrophes) , was Cuvier's attempt to explain the existence of

• A) evolution.
• B) the fossil record.
• C) uniformitarianism.
• D) the origin of new species.
• E) natural selection.

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Definitions:

Cross-Bridges

The connections formed between actin filaments and myosin heads during muscle contraction, enabling force generation.

Actin Myofilaments

Thin filaments primarily composed of the protein actin, playing a crucial role in muscle contraction and cell movement.

Sarcoplasmic Reticulum

A specialized type of smooth endoplasmic reticulum found in muscle cells, responsible for storing and releasing calcium ions, which are crucial for muscle contraction.

Endomysium

A thin layer of connective tissue that envelops individual muscle fibers.