The three tissue systems of a mature plant root complete their development in the root zone of
A) elongation.
B) cell division.
C) differentiation.
Answer: C
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Once a putative pure culture has been obtained from the environment, it is no longer necessary to check its purity
Indicate whether the statement is true or false.
A purine or pyrimidine that is attached to a sugar, either ribose or deoxyribose, is called a ________.
A. nucleic acid B. nucleotide C. nucleoside D. nitrogenous base
The first stable intermediate produced in the Krebs cycle is
a. pyruvate b. acetyl CoA c. fructose bisphosphate d. oxaloacetate e. citrate
Classification of protozoans is based primarily on the type of motility observed in the trophozoite stage. Identification can also be made by
A) Examination of tissue specialization B) Examination of the cyst C) Determining a lack of nuclei D) Determining the level of multicellularity