In organogenesis, which of the following is a precursor structure to the brain and spinal cord?

a. notochord
b. somites
c. neural tube
d. cloaca


c. neural tube

Biology & Microbiology

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In the final reaction of the blood clotting cascade, the soluble plasma protein _____ is converted to the insoluble protein ________, which then forms a network of fibers.

A. fibrin; prothrombin B. fibrinogen; fibrin C. thrombin; fibrin D. fibrinogen; thrombin E. prothrombin; thrombin

Biology & Microbiology

A primary purpose for the use of stains in microscopy is to increase the (magnification/brightness/contrast) of a specimen.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The (streptobacilli/actinomycetes/mycoplasmas) are a group of Gram-positive bacteria that form branching filaments resembling those of fungi

What will be an ideal response?

Biology & Microbiology

Blanks "A" and "B" should be labeled respectively ____

a. does not gulp; loss b. does not gulp; gain c. gulps; loss d. gulps; gain

e. does not gulp; pump

Biology & Microbiology