What is the specific site of blood cell formation?
a. heart
b. blood vessel walls
c. red bone marrow
d. compact bone
e. yellow bone marrow
c
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If the bacterial cells were viewed immediately after crystal violet was applied during the Gram stain procedure, gram-positive cells would be purple but gram-negative cells would be colorless.
Answer the following statement true (T) or false (F)
Mitochondria convert the energy stored in _____ to usable energy for the cell
a. water b. organic compounds c. NAD d. ATP e. carbon dioxide
In meiosis homologous chromosomes align next to one another during
A. interphase I. B. metaphase II. C. prophase I. D. metaphase I. E. prophase II.
Nitrites (--NO2) are converted to nitrogen gas (N2) by
A. decomposers. B. nitrogen-fixing bacteria. C. nitrifying bacteria. D. denitrifying bacteria.