The most important aspect of Watson and Crick's discovery of the structure of DNA was that it __________.
A. described a role for nitrogen in biological molecules
B. described a mechanism for formation of all biological molecules
C. helped explain how cells divide to form identical daughter cells
D. provided a model for our understanding of cell structure
C. helped explain how cells divide to form identical daughter cells
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This early development of circadian rhythms is based on specific maturational processes of the brain interacting with ______ and _______ time cues
-social/maternal -encironmental/light-dark cycle -environmental/maternal -social/light-dark cycle
Autoimmune disorders or a tumor of the thyroid can lead to
a. diabetes insipidus. b. diabetes mellitus. c. a simple goiter. d. acromegaly. e. Graves disease.
What animal groups shown here are diploblastic?
A. Sponges B. Cnidarians C. Lophotrochozoans D. Echinoderms E. Both A and B
Malaria is caused by a protist that is transmitted by the bite of a(n) ________
Fill in the blank(s) with correct word