Boron has an atomic number of 5. How many
vacancies does boron have in its outer shell?
a. 1
b. 2
c. 3
d. 4
e. 5
E
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8. The copulatory organ of the earthworm is the
(a) penis. (b) clitellum. (c) gonopodium. (d) vestibule.
The organ that performs filtration of blood, reabsorption, and secretion in vertebrates is the _______.
A. small intestine B. pancreas C. liver D. kidney E. large intestine
When a person absorbs more glucose from
their diet than they need, the excess
a. is flushed from the system as waste. b. is stored as glycogen in the muscle and liver cells. c. is stored as fat in the adipose cells. d. is stored as ATP in the muscle cells. e. is stored as glycogen in the muscle and liver cells, and stored as fat in the adipose cells.
The Cretaceous and Jurassic periods are part of the
A. Archean era B. Cenozoic era C. Mesozoic Era D. Proterozoic era E. Paleozoic era