The atomic number of the element neon (Ne) is 10. How many electrons does a neutral atom of neon contain?
A. 5
B. 10
C. 20
D. It can't be determined from this information
Answer: B. 10
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The presence of a loop of Henle in nephrons is an evolutionary adaptation that enables mammals and birds to reabsorb water efficiently and produce a ____________ urine.
A. hypertonic B. osmolar C. isotonic D. hypotonic
Which statement is true of mitochondria?
a. Mitochondria are found only in prokaryotic cells. b. ATP is formed by reactions that convert carbon dioxide and water into sugars. c. ATP-producing reactions take place in the outer compartment. d. Mitochondria possess their own DNA. e. ATP producing reactions do not require oxygen.
The three principal organs of seed plants are
A. roots, leaves, and flowers B. stems, leaves and roots C. stems, fruits, and flowers D. roots, stems, and flowers
Streptokinase is involved in which of the following?
A) producing antibiotics B) cheese production C) biosensors D) dissolving blood clots E) insecticide