What determines whether a carbon atom's covalent bonds to other atoms are in a tetrahedral configuration or a planar configuration?
A) the presence or absence of bonds with oxygen atoms
B) the presence or absence of double bonds between the carbon atom and other atoms
C) the polarity of the covalent bonds between carbon and other atoms
D) the solvent in which the organic molecule is dissolved
B
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The vast majority of animals are:
a. mammals b. invertebrates c. vertebrates d. birds e. predators
Insulin and glucagon exhibit which type of hormone interaction?
a. synergistic b. permissive c. opposing d. unrelating e. mutual
The term peptidyl transferase relates to ________
A) elongation factors binding to the large ribosomal subunit B) 5' capping of mRNA C) discontinuous strand replication D) base additions during mRNA synthesis E) peptide bond formation during protein synthesis
Membrane proteins serve many functions. One of the functions is transportation of substances across the membrane. If a cell biologist placed cells into an environment in which a chemical has been added that blocks the function of only carrier proteins, the process that will be affected is
A. pinocytosis. B. phagocytosis. C. simple diffusion. D. active transport. E. osmosis.