You stumble upon an unidentified arthropod with no antennae and eight legs. This organism is likely closely related to _____.
A. grasshoppers
B. ticks
C. crayfish
D. millipedes
E. trilobites
Answer: B
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The following enzymes play important roles in DNA replication: DNA polymerase Primase Ligase Helicase In what order do they work during replication?
A. DNA polymerase, primase, ligase, helicase B. Primase, helicase, ligase, DNA polymerase C. DNA polymerase, helicase, primase, ligase D. Helicase, primase, DNA polymerase, ligase E. Ligase, helicase, DNA polymerase, primase
The rate of flow of water through the xylem is regulated by
A. passive transport by the pith B. The force of transpirational pull C. the number of companion cells in the phloem D. active transport by the sieve tube members E. active transport by tracheid and vessel cells
How do we perceive the pitch of sounds?
A) The hammer, anvil, and stirrup vibrate at different speeds. B) Different parts of the basilar membrane vibrate in response to different frequencies of sound. C) Rods vibrate in response to high-frequency sounds and cones respond to low-frequency sounds. D) The tympanic membrane vibrates more strongly at high frequencies. E) The pinna swivels in different directions in response to sounds of different frequency.
The Kingdom Protista is populated by multi-celled eukaryotic organisms that lack tissue specialization.
A) True B) False