In what ways do the amino acid side chains interact to influence protein function?
What will be an ideal response?
Higher-level folding of proteins is dependent on a variety of interactions (ionic, covalent, hydrogen, hydrophobic, hydrophilic, etc.), which determine the functional three-dimensional structure of proteins.
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Which climograph shows the climate for location 3?
A) B B) C C) D D) E E) F
A public health microbiologist plans to screen a particular bacterial species that was isolated from several patients in an intensive care unit to detect if any of the cells are penicillin-resistant mutants. What is the first step in conducting this experiment?
A. Set up an Ames test to see if any of the isolates are mutagenic. B. Determine whether or not wild type cells of the same bacterial species are susceptible to penicillin. C. Test the cells to see if they can grow on media to which penicillin has been added. D. Perform an antibiotic susceptibility test on the cells using antibiotics other than penicillin that are known to be effective.
The two strands of a DNA molecule are held together by ________
a. phosphodiester linkages b. covalent bonds c. peptide bonds d. hydrogen bonds
Filaments of a fungus that form a velvety cloak around roots or penetrate their cells aiding in the mutualistic
relationship between the plant and fungus are called ____. a. hyphae b. mycorrhizae c. root nodules d. root hairs e. Rhizobium