In the Experiment That Demonstrated That Rotational Catalysis Occurs, a Fluorescently

question 25

Multiple Choice

In the experiment that demonstrated that rotational catalysis occurs, a fluorescently labeled actin filament attached to the ATP synthase enzyme's ɤ subunit was seen to rotate when ATP was added to the enzyme, which was fixed to a cover slip. With each step in the rotational catalysis, how much could the actin filament be seen to rotate?

• A)0°
• B)360°
• C)120°
• D)90°
• E)3°

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Definitions:

Basal Cell

A type of cell found in the lowest layer of the epidermis, involved in the production of new skin cells.

Squamous Cell

A flat, scale-like epithelial cell found in the tissue that forms the surface of the skin, lining of the hollow organs of the body, and passages of the respiratory and digestive tracts.

Melanoma

A type of skin cancer that originates in the pigment-producing melanocytes, known for its potential to spread to other parts of the body and be deadly.

Papule

A small, raised, solid pimple or swelling on the skin that is often part of an acne outbreak or skin condition.