Which portion of nerve cells receives incoming messages?
a. cell body
b. soma
c. axon
d. dendrite
e. synapse
ANSWER: d
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Based on the number of species, the most successful extant phylum of plants is the
A. Anthophyta. B. Coniferophyta. C. Pterophyta. D. Gnetophyta. E. Charophyta. F. Hepaticophyta.
Which statement is true of polytomy branches?
a. Organisms in each branch share a common ancestor. b. Polytomy represent mass speciation from a single mutation event. c. The longest branch is the ancestor of the other sister taxa. d. Polytomy branching only occurs in single-celled organisms.
The validity of scientific discoveries is not
based on a. morality. b. aesthetics. c. philosophy. d. economics. e. any of these.
Place the following steps for cloning DNA in the correct order:1 - use vector to deliver new rDNA to bacterial or other cells2 - use restriction enzymes to cut a plasmid and add the desired gene3 - isolate and cut out a desired gene using restriction enzymes4 - use DNA ligase to seal the new gene5 - allow bacterial cells to replicate and produce desired product
A. 3, 2, 4, 1, 5 B. 5, 3, 2, 4, 1 C. 1, 2, 3, 4, 5 D. 2, 5, 3, 1, 4