The fluid mosaic model proposed by Singer and Nicolson in 1972 explained that
A. the cell membrane was composed of a phospholipid bilayer but the polar ends of the phospholipid molecules were reversed.
B. the cell membrane was composed of a phospholipid bilayer between two layers of globular proteins.
C. the cell membrane was composed of lipids and proteins.
D. the cell membrane was composed of a phospholipid bilayer with globular proteins actually inserted into the bilayer.
Answer: D
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Some bryophyte species are ____, meaning that they grow independently on another organism
a. tracheophytes b. epiphytes c. parasites d. charophytes e. rhizoids
Succession results from all of the following EXCEPT ____
a. facilitation b. growth and maturation rates c. inhibition d. interspecific differences in dispersal e. stasis
Which of the following molecules is/are produced by translation? Include molecules that are subject to further modification after initial synthesis.
A. The amino acid glycine B. RNA polymerase C. Aminoacyl-tRNA synthetase
Ligase aids in: