Tanning increases the number and density of melanocytes in the epidermis
Indicate whether the statement is true or false
FALSE
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Why did scientists originally believe that proteins, rather than DNA, were the molecules that directed protein synthesis?
A. Proteins were the more complex molecules in which genetic information could be stored. B. Proteins were more likely to have catalytic properties for synthesis reactions. C. At the time, more was known about the structure of proteins than that of DNA. D. Proteins were the same types of molecules as those that were being synthesized.
An organism with an incompletely lined body cavity around the gut is termed a(n) ________ animal
a. coelomate b. acoelomate c. pseudocoelomate d. protostome
Most organisms in the intertidal zone of sandy shores burrow into the sand
Indicate whether the statement is true or false
DNA is made of:
A) fatty acids. B) nucleotides. C) transcriptase. D) amino acids. E) four interconnected carbon rings