Three Lab Groups Carried Out an Experiment to Identify the Concentration

question 39

Multiple Choice

Three lab groups carried out an experiment to identify the concentration of sucrose in six solutions. Each unknown contained one of the following sucrose concentrations: 0.0 M, 0.2 M, 0.4 M, 0.6 M, 0.8 M, and 1.0 M. Cubes of sweet potato (1 cm³) were soaked for 24 hours in each solution and weighed to determine the change in mass. Each data entry represents the average of three sample replicates expressed as percent change in mass following a 24-hour soak in the unknown solutions.
$$\begin{array} { | l | l | l | l | } \hline \text { Unknown } & \text { Percent change in } & \text { Percent change in } & \text { Percent change in } \\& \text { Graup 1 } & \text { Guss } & \text { mass } \\\hline \text { A } & 6.6 & 7.8 & \text { Group 3 } \\\hline \text { B } & 3.1 & 3.7 & 7.5 \\\hline E & - 2.7 & - 3.5 & 2.9 \\\hline \text { D } & 0.7 & 0.5 & - 2.5 \\\hline \text { E } & - 11.6 & - 12.3 & 1.1 \\\hline\text {F } & - 5.2 & 6.2 & - 12.6 \\\hline\end{array}$$
Based on the data provided, the intracellular molarity of dissolved solutes in sweet potato cells is approximately ________.

• A) 0.2 M
• B) 0.4 M
• C) 0.6 M
• D) 0.8 M

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Definitions:

Hackman-Oldham's Model

Hackman-Oldham's Model is a theory of job design that emphasizes the importance of certain job characteristics in enhancing employee motivation and satisfaction.

Skill Variety

The opportunity and ability to use numerous different skills in one’s position at work.

Task Identity

The worker's perception of the meaningfulness of a job, often based upon the worker’s permission to start a job and see it through to completion.

Autonomy

The right or condition of self-government, or in a personal context, the capacity to make an informed, uncoerced decision.