A Biologist Wants to Compare the Integral Membrane Protein Content

question 195

Multiple Choice

A biologist wants to compare the integral membrane protein content of cells from mouse liver, pancreas, and intestine.Which experimental procedure should she choose?

• A) Compare the patterns of bumps observed when cells of each type are subjected to freeze-fracture electron microscopy.
• B) Perform three cell fusion experiments in which each cell type is labeled, fused with another labeled cell, and observed to see how rapidly the labels mix together.
• C) Hold mice in environments of varying temperatures, then analyze and compare the fluidities of membranes isolated from each cell type.
• D) Treat intact cells with enzymes that hydrolyze peptide bonds, then test whether the cells have lost their ability to bind to various small molecules, such as glucose.
• E) Carry out chemical analyses of the phospholipid composition of membranes isolated from each cell type, then compare the results.

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Definitions:

Bootstrap

A resampling technique used to estimate statistics on a population by sampling a dataset with replacement.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the true population parameter with a certain degree of confidence.

Corporate Executives

Individuals who hold senior management positions within a company, responsible for making major corporate decisions and managing overall operations.

Annual Salaries

The total amount of money that an individual earns in one year from their employment.