"You are going to use the enrichment culture" technique to isolate Gram negative, aerobic, N2-fixing bacteria from a sample of soil. You will need to design a defined medium which will allow you to enrich for Gram negative, aerobic, N2-fixing bacteria. Which of the following ingredients would you want to include in your defined medium?

A. vitamins
B. Trace Element Solution
C. air (O2 + N2)
D. MgSO4
E. KCl
F. glucose
G. Penicillin
H. yeast extract
I. Na2HPO4
J. NH4Cl

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.

Along what geographical feature are most of the oil producing regions located