Use the Following Information to Answer the Next Few Questions

question 74

Multiple Choice

Use the following information to answer the next few questions.
In a study of the development of frog embryos, researchers stained several early gastrulas with vital dyes and noted the locations of the dyes after gastrulation. The results are shown in the following table.

-The mesoderm was probably stained with a

• A)blue colour.
• B)yellow colour.
• C)red colour.
• D)purple colour.
• E)green colour.

---

Definitions:

Body Fluids

Liquids that are found within the bodies of living organisms, including blood, saliva, and cerebrospinal fluid.

Buffer

A chemical substance that helps maintain a stable pH in a solution by neutralizing small amounts of added acid or base.

pH

A scale used to specify the acidity or basicity of an aqueous solution, with low values indicating acidity and high values, basicity.

Solutions

Homogeneous mixtures composed of two or more substances where one substance, the solute, is dissolved in another, the solvent.