Which atom is depicted in the accompanying figure?

a. hydrogen
b. sodium
c. helium
d. chlorine
e. oxygen


ANSWER: b

Biology & Microbiology

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Which specialization evolved in land plants to allow for reproduction in dry conditions?

a. xylem b. phloem c. stomata d. roots e. sporophyte dominance

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After three replications of a single DNA molecule,

what percent of the resulting molecules contain one strand of the “original” DNA? a. 0 percent b. 25 percent c. 50 percent d. 75 percent e. 100 percent

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All living species of organisms have now been described by scientists

Indicate whether the statement is true or false

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Glycolysis occurs in the ________ of a cell, not in mitochondria

Fill in the blank(s) with correct word

Biology & Microbiology