Davis, Weintraub, and Lasser found three genes that are involved in muscle differentiation by
A. eliminating all the gene candidates that were expressed in both muscle and nonmuscle cells.
B. finding all the genes that were expressed in common between two different muscle cell lines.
C. cloning all the genes that were expressed in muscle cell lines to determine if any of these genes could cause nonmuscle cells to differentiate into muscle cells.
D. mutating genes expressed only in muscle cells to see if differentiation could be prevented.
A. eliminating all the gene candidates that were expressed in both muscle and nonmuscle cells.
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____ is the process by which researchers identify various types of sequences
Fill in the blank with the appropriate word.
Expression of a microRNA complementary in sequence to a gene _____ that gene
a. blocks transcription of b. replicates c. speeds transcription of d. inhibits translation of e. methylates the bases in
All of the following are true regarding coral
reefs EXCEPT that they a. develop in warm, clear waters near coasts or tropical islands. b. are found between 25 degrees north and south. c. are wave-resistant formations. d. are the least diverse marine ecosystem. e. consist primarily of secreted calcium carbonate
Answer the following questions true (T) or false (F)
1. Integral proteins always extend completely through the plasma membrane. 2. The chief component of the plasma membrane is the phospholipid bilayer. 3. The glycocalyx is found just inside the plasma membrane of the cell.