A Dysfunctional Cell Lacks a Signal Peptidase and Is Unable

question 6

Multiple Choice

A dysfunctional cell lacks a signal peptidase and is unable to cleave the ER signal sequence from proteins translated in the ER.What will be the effect on the cell's proteins?

• A)The cell will have no integral membrane proteins
• B)All cellular proteins will have an ER signal sequence
• C)There will be a common signal sequence at the N-terminus of all integral membrane proteins in the plasma membrane
• D)All cellular proteins will become membrane proteins
• E)There will be a common signal sequence at the C-terminus of all integral membrane proteins in the nuclear envelope

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Definitions:

Preoperational

The stage in Jean Piaget's theory of cognitive development where children (aged 2 to 7) begin to engage in symbolic play and struggle with logic and taking the perspective of others.

Cognitive Development

Cognitive Development is the process by which a child learns to reason, solve problems, and gain knowledge through interaction with the world around them, as described in theories such as those by Piaget.

Piaget's Stages

A theory of cognitive development devised by Jean Piaget, which describes how children's understanding of the world changes through four stages of development.

Object Permanence

A cognitive development milestone in which an infant realizes that objects continue to exist even when they cannot be seen or heard.