What Would Be the Most Likely Result on the Regulation

question 22

Multiple Choice

What would be the most likely result on the regulation of the lac operon from a nonfunctional repressor protein?

• A) transcription of the lactose metabolizing genes, even when lactose is absent
• B) no transcription of the lactose metabolizing genes, even when lactose is present
• C) binding of the repressor protein to the operator, even when lactose is present
• D) binding of the repressor protein to the regulatory gene in both the presence and absence of lactose
• E) no transcription of the regulatory gene, even in the presence of lactose

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Definitions:

Scapula

A flat triangular bone located in the upper back that connects the humerus (upper arm bone) with the clavicle (collar bone).

Clavicle

A long bone that serves as a strut between the shoulder blade and the sternum or breastbone; also known as the collarbone.

Phalanx

In anatomy, a phalanx is one of the bones in the fingers or toes, playing a crucial role in the mobility and function of the hands and feet.

Sarcomere

A sarcomere is the fundamental unit of muscle contraction, consisting of repeating segments of actin and myosin filaments in striated muscle fibers.