The most prominent tissue in the stems of herbaceous plants is
a. epidermis.
b. parenchyma.
c. phloem.
d. xylem.
B
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If orange juice has a pH of 4 then
A. the H+ concentration is 4. B. it is an acidic solution. C. it is an alkaline solution. D. it is an acidic solution with a H+ concentration of 4. E. None of these choices are correct.
DNA repair mechanisms occur
A. only in prokaryotes. B. only in eukaryotes. C. in both eukaryotes and prokaryotes. D. in neither eukaryotes or prokaryotes.
Most of the filtrate is reabsorbed through the walls of the:a
distal convoluted tubule. b. loop of Henle. c. proximal convoluted tubule. d. collecting duct. e. glomerulus
Elements only achieve the full complement of electrons in outermost energy cells by donating away or sharing electrons
Indicate whether the statement is true or false