The Michaelis constant (Km) of an enzyme is the substrate concentration that produces maximum velocity.
Answer the following statement true (T) or false (F)
False
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In vulval development in Caenorhabditis elegans, the progenitor cell nearest to the anchor cell is exposed to the highest concentration of epidermal growth factor and activation of its EGF receptor promotes type I cell differentiation
The type 1 cell then prevents type 1 differentiation in adjacent progenitor cells, a mechanism called ____ inhibition. Fill in the blank with the appropriate word.
In replication, once the DNA strands have been separated, reformation of the double helix is preventedby:a
DNA helicase enzyme. b. single-strand binding proteins. c. DNA polymerases. d. ATP. e. GTP.
You feel discomfort and possibly pain when the dentist drills a hole in your tooth because the:a
heat of the drilling process is felt by the gum tissue. b. pulp cavity contains nerves. c. tooth decay has invaded the pulp cavity.
d. dentist is applying too much pressure to the drill. e. decay has affected the dentin.
What plant group has the largest number of living species?
A. Seedless, nonvascular plants B. Cone-bearing plants C. Flowering plants D. Seedless vascular plants