The most likely reason that glucose dissolves in water is that it is ____
a. an ionic compound
b. a polysaccharide
c. polar and forms many hydrogen bonds with the water molecules
d. an extremely unstable molecule
e. highly nonpolar
ANSWER: c
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The major difference between gram-positive and gram-negative bacteria is that:
a. the peptidoglycan layer in gram-positive bacteria is substantially thinner than in gram-negative bacteria. b. gram-positive bacteria contain a periplas-mic space, whereas gram-negative bacteria do not. c. flagella are only present in gram-positive bacteria. d. gram-negative bacteria contain an outer membrane that functions as the cell's ini-tial barrier to the environment.
What molecule indirectly provides the energy for translation?
A. ADP B. ATP C. GMP D. GDP E. GTP
A group of neighboring populations that exchange individuals is defined as a ____
a. metapopulation b. megapopulation c. community d. source population e. sink population
Which of the following is NOT true of the
genetic code?
a. It is the same for almost all organisms. b. There are 64 codons. c. It has within it 5 stop codons. d. Most amino acids have more than one codon that codes for it. e. Each codon is made up of three nucleotides