How Can Two Cells of a Complex Multicellular Organism Have

question 55

Multiple Choice

How can two cells of a complex multicellular organism have the same genome, but markedly different structures and functions?

• A)During differentiation, as cells become specialized, they lose portions of their genome that are no longer needed.
• B)Different genes are expressed in different cells.
• C)Part of the process of differentiation of cells is to create mutations in the genome.
• D)Once differentiation begins, the genome no longer controls cellular functions.

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Definitions:

Isokinetic

Pertaining to or involving muscle action with a constant rate of movement within a range of motion.

Isometric

Refers to a type of strength training in which the joint angle and muscle length do not change during contraction, such as holding a plank position.

Muscle-Training Program

A structured plan of physical activities aimed at increasing muscle strength, endurance, and size.

Weight Gain

An increase in body weight, which can result from a variety of factors including increased muscle mass, fat deposits, or fluid retention.