Which of the following groups includes both spiders and horseshoe crabs?
A) millipedes
B) crustaceans
C) chelicerates
D) insects
Answer: C
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What is the correct order of structures in the electrical excitation pathway that generates a normal heartbeat?
Refer to the diagram below.
A. 1, 2, 3, 4, 5, 6
B. 3, 6, 2, 4, 1, 5
C. 6, 3, 2, 4, 5, 1
D. 1, 5, 4, 2, 3, 6
E. 2, 5, 1, 4, 6, 3
F. 3, 2, 6, 4, 5, 1
A pine tree is called a sporophyte because it
a. develops from a germinated spore. b. produces spores by meiosis. c. is haploid. d. undergoes fertilization. e. reproduces by both sexual and asexual means.
Total species diversity, or species richness, across all communities within a geographic area is referred to as ________ diversity
Fill in the blank(s) with correct word
A signal sequence at the N terminus of newly synthesized proteins will direct the protein to the ________ for protein packaging
Fill in the blank(s) with correct word