When a Muscle Fiber Contracts, the I Bands Diminish in Size

question 96

True/False

When a muscle fiber contracts, the I bands diminish in size, the H zones disappear, and the A bands do not diminish in length.

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Definitions:

Teosinte Branched 1

A plant gene responsible for the difference in plant architecture between modern maize and its wild ancestor, teosinte.

Prolamin Box Binding Factor

A transcription factor that binds to the prolamin box, a specific DNA sequence found in the promoters of seed storage protein genes in plants.

IFG1

Insulin-like growth factor 1, a protein that plays a critical role in childhood growth and continues to have anabolic effects in adults.

Gall Size

The physical dimension of a gall, which is a growth or swelling on plants caused by parasitic insects or mites.