By Inserting Four Developmental Genes into Ordinary Cells Such as Skin

question 48

Multiple Choice

By inserting four developmental genes into ordinary cells such as skin cells,Shinya Yamanaka and James Thomson were able to convert them into:

• A)nerve cells.
• B)embryonic stem cells.
• C)induced pluripotent stem cells.
• D)egg cells.

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Definitions:

Off Delay Cycle

A control or timing function where a signal or operation is delayed from turning off after an input trigger is removed.

MCR Instruction

Master Control Reset, an instruction used in programming PLCs to control the execution of a block of logic or instructions between its start and end points.

Nonretentive Outputs

Output signals or data in a control system that do not maintain their state after a power cycle or reset.

Latch Instruction

One-half of an instruction pair (the second instruction of the pair being the unlatch instruction) that emulates the latching action of a latching relay. The latch instruction for a programmable logic controller energizes a specified output point or internal coil until it is de-energized by a corresponding unlatch instruction.