Which of the following statements about phospholipids is false?
a. They are amphipathic molecules.
b. They contain three fatty acids chains.
c. They contain a polar organic group attached to a phosphate group.
d. They have cylindrical shapes that allow them to associate with water most easily as a bilayer structure.
e. They have two distinct regions, one strongly hydrophobic and the other strongly hydrophilic.
b
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The gram-negative coccus that can be described as oxidase-positive, glucose-negative, maltose-negative, sucrose-negative, lactose-negative, and DNase-positive is:
a. N. meningitidis. b. M. catarrhalis. c. Neisseria cinerea. d. N. gonorrhoeae.
The number of genes correlates with _____.
a) the size of the genome in prokaryotes b) and is approximately equal to the number of different proteins that a species can make c) being much higher among Eubacteria than in Archaea d) the size of the genome in eukaryotes e) being higher in Archaea than in eukaryotes
The ENCODE project seeks to
A. sequence the genomes of all animals. B. identify the functional elements of the human genome. C. identify the coding sequences of human DNA. D. sequence the DNA of all organisms. E. identify the proteins encoded by the human genome.
What is cooperative binding and why is it important for repressor function?
What will be an ideal response?