An E Coli Cell Without a Functional LacI Gene Is Expected

question 25

Multiple Choice

An E. coli cell without a functional lacI gene is expected to

• A) be unable to metabolize lactose within the cell.
• B) always produce fi- galactosidase.
• C) never produce fi- galactosidase.
• D) be unable to transport lactose into the cell.

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Definitions:

Occipital Bone

A cranial bone located at the back and base of the skull, crucial for head movement and support.

Sagittal Suture

A fibrous joint that connects the two parietal bones of the skull, running from the front to the back of the head.

Sternocostal Synchrondrosis

A type of joint where the first rib meets the sternum, characterized by its cartilaginous connection that allows for some movement.

Costochondral Joint

The articulation between the costal cartilages and the ends of the ribs, contributing to the chest wall's flexibility.