Muscle Review - Review #3

Front

What is the functional contractile unit within muscle fiber?

Back

The sarcomere.

Front

Where does aerobic respiration occur in the cell?

Back

In the mitochondria.

Front

What term refers to the totality of an organism's chemical reactions?

Back

Metabolism.

Front

How is energy released from ATP?

Back

A phosphate group is removed.

Front

What are bands of tissue that attach a muscle to a bone called?

Back

Tendons.

Front

What is the role of the sarcoplasmic reticulum in muscle contraction?

Back

It stores and releases calcium ions.

Front

What is the difference between catabolism and anabolism?

Back

Catabolism is the breakdown of molecules to obtain energy, while anabolism is the synthesis of all compounds needed by the cells.

Front

What is the primary energy currency of the cell?

Back

ATP (Adenosine Triphosphate).

Front

What is the function of myoglobin in muscle cells?

Back

Myoglobin stores oxygen for use during muscle contraction.

Front

What is the sliding filament theory?

Back

It explains how muscles contract by the sliding of actin and myosin filaments past each other.