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In each of the following examples, identify the independent and dependent variables. Discuss which independent variables are manipulated variables.
a. The comparative effectiveness of programmed instruction on the computational skills of 9th graders.
b. The effect of self paced versus teacher pacing instruction on self-concept of 4th, 5th, and 6th graders.
c. The effect of employment status of mothers on school absenteeism of their children
d. The effect of sex on algebra achievement
Introns
Non-coding sequences of DNA within genes that are removed during mRNA processing before translation into proteins.
Signal-Recognition Particle RNA
See signal-recognition particle (SRP).
Ribosome-mRNA-Polypeptide Complex
A molecular assembly that includes a ribosome, messenger RNA (mRNA), and the newly forming polypeptide chain during protein synthesis.
Rough ER
A network of membranous tubules within a cell, studded with ribosomes, involved in the synthesis and transport of proteins.
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