Sensory signals that trigger release of saliva are an example of how the nervous system works with
which other system?
a. endocrine
b. cardiovascular
c. sensory
d. digestive
e. muscular
D
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What provides the energy for the polymerization reactions in DNA synthesis?
A) ATP B) DNA polymerase C) breaking the hydrogen bonds between complementary DNA strands D) the deoxyribonucleotide triphosphate substrates
A mite is most closely related to which of the following?
a. ants b. spiders c. isopods d. leeches e. flukes
Cartilage is found
a. in the nose. b. in the embryonic skeleton. c. in the external ear. d. between vertebrae. e. in all of these
A botanist identifies a new species of plant that has 32 chromosomes. It grows in the same habitat with three similar species: species A (2n = 14), species B (2n = 16), and species C (2n = 18). Which of the following is a possible mechanism by which the new species could have arisen from the others?
a. Either autopolyploidy due to a nondisjunction in the formation of gametes of species B or allopolyploidy associated with hybridization between species A and C b. Allopatric divergence by development of a mechanical reproductive isolating mechanism c. Autopolyploidy due to a nondisjunction in the formation of gametes of species B d. Allopolyploidy associated with hybridization between species A and C e. Change in a key developmental gene that causes the plants to flower at different times