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It Is Desired to Determine the Blood Volume of a Live

question 10

Multiple Choice

It is desired to determine the blood volume of a live mouse.To do this,0.10 mL of a saline suspension of red blood cells labeled with $It is desired to determine the blood volume of a live mouse.To do this,0.10 mL of a saline suspension of red blood cells labeled with Fe is injected into the tail vein.Before injection,the gamma rays were counted for this 0.10-mL solution and the count rate found to be 1.0 \times 10<sup>4</sup> cpm.After a sufficient time for the blood to be thoroughly mixed,0.10 mL of blood is removed and counted.The sample is found to have a count rate of 539 cpm.What is the approximate blood volume of the mouse? A) 0.54 mL B) 19 mL C) 5.4 mL D) 5.3 mL E) 1.9 mL$ Fe is injected into the tail vein.Before injection,the gamma rays were counted for this 0.10-mL solution and the count rate found to be 1.0 $\times$ 10⁴ cpm.After a sufficient time for the blood to be thoroughly mixed,0.10 mL of blood is removed and counted.The sample is found to have a count rate of 539 cpm.What is the approximate blood volume of the mouse?

Definitions:

Gene Expression

The process by which information from a gene is used in the synthesis of a functional gene product, often a protein, leading to the manifestation of a genetic trait.

Cell Types

Distinct forms that cells take on within an organism, characterized by their specific structure, function, and biochemical properties.

Unique Functions

Distinctive roles or activities performed by particular biological entities or structures not shared with others.

Catabolite Activator Protein

A protein that binds to DNA and stimulates the transcription of certain genes in bacteria, especially in the presence of specific sugars.