Food contains essential organic compounds that can be broken down in our bodies and used as nutrients. What must be present to make a molecule "organic?"
Answer: carbon
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Synaptic vesicles discharge their contents by exocytosis at the
A. dendrite. B. axon hillock. C. nodes of Ranvier. D. postsynaptic membrane. E. presynaptic membrane.
Individuals with three or more copies of each of their chromosomes are called ____
a. polyploids b. haploids c. aneuploids d. euploids e. diploids
Which of the following terms is mismatched with its meaning or characteristics?
A. Eumetazoa: definite symmetry; tissues organized B. Parazoa: lacks symmetry; no tissues C. Diploblastic: ectoderm and mesoderm D. Chordate: animal with notochord E. Triploblastic: ectoderm, mesoderm, and endoderm
A Lek is:
a. a permanent territory in songbirds. b. a mating location. c. a temporary arena in which males present themselves. d. a group of sneaker males. e. A and B.