In C Elegans, Ced-9 Prevents Apoptosis in a Normal Cell in in Which

question 14

Multiple Choice

In C. elegans, ced-9 prevents apoptosis in a normal cell in which of the following ways?

• A) It prevents the caspase activity of ced-3 and ced-4.
• B) Ced-9 remains inactive until it is signaled by ced-3 and other caspases.
• C) Ced-9 cleaves to produce ced-3 and ced-4.
• D) Ced-9 enters the nucleus and activates apoptotic genes.
• E) Ced-9 prevents blebbing by its action on the cell membrane.

---

Definitions:

Maximal Sustained

The highest level of performance or activity that an organism can maintain indefinitely without experiencing degradation or failure.

Muscle Contraction

The process whereby muscle fibers shorten or become tense due to interactions between actin and myosin filaments, generating force.

Tetanus

A bacterial disease marked by rigidity and spasms of the muscles, caused by a toxin produced by Clostridium tetani.

Sarcomere

The basic unit of a muscle's cross-striated myofibril, responsible for muscle contraction and defined by the area between two Z lines.