Metal ions are a common type of ____ for enzymes
Fill in the blank with the appropriate word.
Answer Key: cofactor
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Ribbon worms belong to the phylum:
a. Nemertea. b. Platyhelminthes. c. Arthropoda. d. Ctenophora. e. Cnidaria.
Which of the following is TRUE of probes?
a. they are artificially made b. they are isolated from bacteria c. they are the result of nucleic acid hybridization d. they are isolated from SNPs e. more than one of these is true
The mighty chestnut tree once dominated many of our Appalachian forests but was decimated by an exotic fungus in the first part of the 20th century
A few small groves of trees still remain in isolated pockets, and living roots of some of the fallen ancient trees still try to send up new shoots. These shoots always die as soon as they are exposed to the fungus. How could chestnut trees be genetically modified to be resistant to the fungus and to grow again?
The eyes and the respiratory tract are both protected against infections by _____
A) interferons produced by immune cells B) the secretion of complement proteins C) the release of slightly alkaline secretions D) the secretion of lysozyme onto their surfaces