At the molecular level, how do proteins like repressors bind to DNA? How can binding affinities be increased or decreased?
What will be an ideal response?
Protein-nucleic acid interaction is mediated by hydrogen bonding, not covalent bonding. DNA is a negatively charged molecule, so binding occurs through positively charged amino acid residues in the protein. Binding affinity can be increased or decreased through amino acid substitutions that affect charge or shape.
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The covalent linkage joining two amino acids together is referred to as a(n) ____ bond
Some help with would be great.
Stem and root thickening in eudicots is
accomplished by ___ and is called ___ growth.
a. lateral meristems--primary b. lateral meristems--secondary c. apical meristems--primary d. apical meristems--secondary e. apical meristems--lateral
What law was passed to address the problem of rapid species loss in the United States?
A) the Endangered Species Act of 1973 B) the Wilson-Biophilia Act of 1994 C) the Biodiversity Act of 1975 D) the Human Intervention Act of 1979
Low-growing, hardy plants of the ____________________ occur at high latitudes, where there is a layer of ____________________.
Fill in the blank(s) with the appropriate word(s).