A bacterium that thrives in the Great Salt Lake but not in fresh water is probably a ________.
Fill in the blank(s) with the appropriate word(s).
Ans: halophile
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To further reduce the possibility of biological contamination, MOST treatment plants treat the effluent with
A) fluorine. B) chlorine. C) ozone. D) extreme heat.
What role does the C domain play in cell surface proteins that interact directly with antigens?
What will be an ideal response?
Each of the following is a plant hormone except
A) brassinosteroids B) abscisic acid. C) ethylene. D) All the above are plant hormones. E) None of the above are plant hormones.
Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all.
A. This diploid germ cell produces primary oocytes by mitosis. B. Human females are born with about 2 million of these cells that entered meiosis but stopped in prophase I. C. This cell becomes the mature egg only after fertilization in humans. D. This cell is the first sex cell stage to be in the haploid state. E. This cell contains a haploid set of chromosomes but will never be fertilized; often disintegrates and is reabsorbed in the body. F.