P. chromatophora secretes around itself a test, or case, of plates made of silica
Which of the following is another rhizarian that would be in competition with P. chromatophora for the silica needed to make these plates, assuming limited quantities of silica in the environment?
A) radiolarians
B) foraminiferans
C) dinoflagellates
D) diatoms
A
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Sexual fusion brings two haploid cells together to produce a:
A. polyploid cell. B. diploid cell. C. haploid cell. D. None of these choices are correct.
If you were observing the early development of a chick embryo and saw patterns in terms of the placement of head and wings, you would assume that you were seeing the effects of
A. controlled gene expression. B. temperature. C. appropriate lighting. D. sex hormones. E. All of the answer choices are correct.
Which of the following hormones is produced only
when a woman is pregnant? a. testosterone b. gonadotropic-releasing hormone c. human chorionic gonadotropin d. estrogen e. progesterone
Stringent safety rules are not necessary for recombinant DNA research because it is a natural process that occurs in the absence of human intervention
Indicate whether the statement is true or false