In the past decades, direct-to-consumer (DTC) genetic tests have become widespread. Which U. S. federal agency is responsible for the future regulation of these tests?
A) FBI B) EPA C) FDA D) DEA
Answer: C
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Spiny skinned organisms that have a water vascular system belong to the phylum:
a. Echinodermata. b. Chordata. c. Bryozoa. d. Arthropoda. e. Mollusca.
Most of the Earth’s phosphorous is in the form
of
a. phosphoric acid. b. elemental phosphorous. c. phosphate. d. phosphorous cations. e. carbonate
Which group of plants have phloem and xylem but lack seeds, flowers, and fruit?
A. liverworts, hornworts, and mosses B. ferns, club mosses, horsetails, and whisk ferns C. ginkgo, cycads, conifers, and gnetophytes D. monocots and eudicots E. All plants have phloem and xylem but lack seeds, flowers, and fruit.
From which of the following structures do lateral roots arise?
a. the root hairs b. the endodermis c. the pericycle d. the root cap