All plant tissues arise at ________, which are regions of rapidly dividing cells
a. cotyledons
b. ground tissues
c. collenchyma
d. meristems
d
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Various forms of a single gene at a given locus
is called a. kinetochores. b. alleles. c. autosomes. d. loci. e. chromatids.
The primary ions that contribute to the salinity of ocean waters are
A) calcium and sodium. B) sodium and chloride. C) sodium and carbonate. D) calcium and chloride.
HIV
A. is a retrovirus. B. infects most mammals. C. can be killed with antibiotics. D. causes liver cancer. E. can be transmitted through the skin.
Many enzyme-catalyzed reactions are freely reversible; however, some key steps require separate enzymes for the reverse step in order to provide for independent regulation of anabolic and catabolic pathways.
Answer the following statement true (T) or false (F)