When signal molecules bind to two tyrosine kinase receptors, the receptors move closer to each other
and form a monomer.
__________________ Indicate whether the statement is true or false.
F, dimer
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A researcher planned to duplicate the Luria Delbruck fluctuation experiment. This researcher inoculated twenty samples of liquid nutrient media with bacteria from the same colony and let them grow overnight. The next morning the researcher noticed that all but one of the flasks had come open and were ruined. Not wishing to redo the experiment, the researcher spread samples of bacteria from the one intact liquid culture on twenty petri plates that had nutrient agar infused with bacteriophage. What results do you expect the researcher obtained from this experiment?
A) All plates had some bacterial colonies; some plates had more bacterial colonies than others. B) Some plates had no bacterial colonies; others had varied numbers of colonies. C) All plates had a similar number of bacterial colonies. D) Some plates had no bacterial colonies; all of the other plates had a similar number of bacterial colonies. E) No bacterial colonies formed on any of the plates.
If a certain stretch of DNA reads ATTACGAG, what would the corresponding mRNA sequence be?
What will be an ideal response?
In heterotrophs, energy for the life processes comes from the chemical energy stored in the bonds of...
a) oxygen molecule b) organic compounds c) water molecules d) inorganic compounds
The chemical bond within a water molecule is a ________ bond.
Fill in the blank(s) with the appropriate word(s).