In sewage treatment, the removal of phosphates and nitrogen compounds is achieved during

A. primary treatment.
B. secondary treatment.
C. advanced treatment.
D. quaternary treatment.


C. advanced treatment.

Biology & Microbiology

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Proteins that are involved in the regulation of the cell cycle and that show fluctuations in concentration during the cell cycle are called _____

A) ATPases B) kinetochores C) kinases D) estrogen receptors E) cyclins

Biology & Microbiology

Name two features of animal cell mitosis and cytokinesis you can use to distinguish these processes from those occurring in plant cells.

What will be an ideal response?

Biology & Microbiology

Skin color in humans is a(n) ____________________ trait.Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Protein interaction networks may be characterized by all of the following approaches except

a. gentle isolation followed by mass spectrometry. b. shotgun sequencing of random DNA clones. c. screening for protein interactions in vitro. d. the yeast two-hybrid method.

Biology & Microbiology