If the DNA of a certain organism has guanine as 30% of its bases, then what percentage of its bases are adenine?
A) 40% B) 20% C) 0% D) 10% E) 30%
B
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Which procedure would you use to detect a nutritional mutation in microorganisms?
A) Visible inspection B) Replica plating C) Controlled crosses D) Isolation at high temperature E) Plating on antibiotic-containing medium
The ________ is an extraembryonic membrane that surrounds the embryo and serves to protect and cushion the embryo
Fill in the blank(s) with correct word
Which phrase best describes the result of meiosis?
a. the generation of four haploid cells b. the generation of four diploid cells c. the generation of two diploid cells and two haploid cells d. the generation of two diploid cells
Each of the following will enhance and promote phagocytosis, except
A. deposition of complement fragments on bacterial cells. B. tumor necrosis factor (TNF) and other cytokines. C. deposition of interferon on bacterial cells. D. interaction of TLRs and PAMPs.