Multiple Choice
Which of the following types of radiation results in the loss of an electron?
22. Techniques in Cell Biology
The Use of Radioisotopes
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Which of the following characteristics can a radioisotope NOT determine?
A
The quantity of molecules in a cell
B
The location of molecules in the cell
C
The size of a single molecule in the cell
D
The movement of a molecule in the cell
Verified step by step guidance1
Understand the role of radioisotopes in cell biology: Radioisotopes are used as tracers to study various biological processes. They can be incorporated into molecules to track their presence and movement within cells.
Identify what radioisotopes can determine: Radioisotopes can help determine the quantity of molecules by measuring the radioactivity, the location of molecules by using imaging techniques, and the movement of molecules by tracking the radioactive signal over time.
Consider the limitations of radioisotopes: While radioisotopes are powerful tools for tracking and quantifying molecules, they do not provide information about the physical dimensions or size of individual molecules.
Analyze the options given: The options include determining the quantity, location, movement, and size of molecules. Radioisotopes are effective for the first three but not for determining the size of a single molecule.
Conclude which characteristic cannot be determined: Based on the understanding of radioisotope capabilities, conclude that the size of a single molecule in the cell cannot be determined using radioisotopes.
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