What is the dependent variable in this figure?

A. the number of cells in the tumor
B. treatment days
C. treatment with endostatin
D. the volume of the tumor
E. treatment with cyclophosphamide


D. the volume of the tumor

Biology & Microbiology

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Tryptophan must be ______ when tryptophan repressor molecules are inactive.

A. Present B. Absent

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Proper design of a urogenital swab expressly intended for the collection of urethral discharge should include what feature?

a. Charcoal-treated cotton or rayon b. Antibiotic-treated calcium alginate c. Non flexible Shaft of wood and not flexi-ble d. Dacron-tipped swabs

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Select the correct sequence of animal developmental events

a. fertilization >>> cleavage >>> organ formation >>>gastrula b. fertilization >>> cleavage >>> gastrula >>> organ formation c. fertilization >>> gastrula >>> cleavage >>> organ formation d. fertilization >>> organ formation >>> gastrula >>> cleavage e. fertilization >>> organ formation >>> cleavage >>> gastrula

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Membranous areas in the infant skull that join bones and function to allow for rapid growth of the brain are known as ________

A) osteocytes B) fontanels C) fibrous membrane D) lacunae

Biology & Microbiology